| [ Index ] |
PHP Cross Reference of WordPress |
[Summary view] [Print] [Text view]
1 <?php 2 3 ///////////////////////////////////////////////////////////////// 4 /// getID3() by James Heinrich <info@getid3.org> // 5 // available at https://github.com/JamesHeinrich/getID3 // 6 // or https://www.getid3.org // 7 // or http://getid3.sourceforge.net // 8 // // 9 // getid3.lib.php - part of getID3() // 10 // see readme.txt for more details // 11 // /// 12 ///////////////////////////////////////////////////////////////// 13 14 15 class getid3_lib 16 { 17 /** 18 * @param string $string 19 * @param bool $hex 20 * @param bool $spaces 21 * @param string|bool $htmlencoding 22 * 23 * @return string 24 */ 25 public static function PrintHexBytes($string, $hex=true, $spaces=true, $htmlencoding='UTF-8') { 26 $returnstring = ''; 27 for ($i = 0; $i < strlen($string); $i++) { 28 if ($hex) { 29 $returnstring .= str_pad(dechex(ord($string[$i])), 2, '0', STR_PAD_LEFT); 30 } else { 31 $returnstring .= ' '.(preg_match("#[\x20-\x7E]#", $string[$i]) ? $string[$i] : '¤'); 32 } 33 if ($spaces) { 34 $returnstring .= ' '; 35 } 36 } 37 if (!empty($htmlencoding)) { 38 if ($htmlencoding === true) { 39 $htmlencoding = 'UTF-8'; // prior to getID3 v1.9.0 the function's 4th parameter was boolean 40 } 41 $returnstring = htmlentities($returnstring, ENT_QUOTES, $htmlencoding); 42 } 43 return $returnstring; 44 } 45 46 /** 47 * Truncates a floating-point number at the decimal point. 48 * 49 * @param float $floatnumber 50 * 51 * @return float|int returns int (if possible, otherwise float) 52 */ 53 public static function trunc($floatnumber) { 54 if ($floatnumber >= 1) { 55 $truncatednumber = floor($floatnumber); 56 } elseif ($floatnumber <= -1) { 57 $truncatednumber = ceil($floatnumber); 58 } else { 59 $truncatednumber = 0; 60 } 61 if (self::intValueSupported($truncatednumber)) { 62 $truncatednumber = (int) $truncatednumber; 63 } 64 return $truncatednumber; 65 } 66 67 /** 68 * @param int|null $variable 69 * @param int $increment 70 * 71 * @return bool 72 */ 73 public static function safe_inc(&$variable, $increment=1) { 74 if (isset($variable)) { 75 $variable += $increment; 76 } else { 77 $variable = $increment; 78 } 79 return true; 80 } 81 82 /** 83 * @param int|float $floatnum 84 * 85 * @return int|float 86 */ 87 public static function CastAsInt($floatnum) { 88 // convert to float if not already 89 $floatnum = (float) $floatnum; 90 91 // convert a float to type int, only if possible 92 if (self::trunc($floatnum) == $floatnum) { 93 // it's not floating point 94 if (self::intValueSupported($floatnum)) { 95 // it's within int range 96 $floatnum = (int) $floatnum; 97 } 98 } 99 return $floatnum; 100 } 101 102 /** 103 * @param int $num 104 * 105 * @return bool 106 */ 107 public static function intValueSupported($num) { 108 // check if integers are 64-bit 109 static $hasINT64 = null; 110 if ($hasINT64 === null) { // 10x faster than is_null() 111 $hasINT64 = is_int(pow(2, 31)); // 32-bit int are limited to (2^31)-1 112 if (!$hasINT64 && !defined('PHP_INT_MIN')) { 113 define('PHP_INT_MIN', ~PHP_INT_MAX); 114 } 115 } 116 // if integers are 64-bit - no other check required 117 if ($hasINT64 || (($num <= PHP_INT_MAX) && ($num >= PHP_INT_MIN))) { // phpcs:ignore PHPCompatibility.Constants.NewConstants.php_int_minFound 118 return true; 119 } 120 return false; 121 } 122 123 /** 124 * @param string $fraction 125 * 126 * @return float 127 */ 128 public static function DecimalizeFraction($fraction) { 129 list($numerator, $denominator) = explode('/', $fraction); 130 return $numerator / ($denominator ? $denominator : 1); 131 } 132 133 /** 134 * @param string $binarynumerator 135 * 136 * @return float 137 */ 138 public static function DecimalBinary2Float($binarynumerator) { 139 $numerator = self::Bin2Dec($binarynumerator); 140 $denominator = self::Bin2Dec('1'.str_repeat('0', strlen($binarynumerator))); 141 return ($numerator / $denominator); 142 } 143 144 /** 145 * @link http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/binary.html 146 * 147 * @param string $binarypointnumber 148 * @param int $maxbits 149 * 150 * @return array 151 */ 152 public static function NormalizeBinaryPoint($binarypointnumber, $maxbits=52) { 153 if (strpos($binarypointnumber, '.') === false) { 154 $binarypointnumber = '0.'.$binarypointnumber; 155 } elseif ($binarypointnumber[0] == '.') { 156 $binarypointnumber = '0'.$binarypointnumber; 157 } 158 $exponent = 0; 159 while (($binarypointnumber[0] != '1') || (substr($binarypointnumber, 1, 1) != '.')) { 160 if (substr($binarypointnumber, 1, 1) == '.') { 161 $exponent--; 162 $binarypointnumber = substr($binarypointnumber, 2, 1).'.'.substr($binarypointnumber, 3); 163 } else { 164 $pointpos = strpos($binarypointnumber, '.'); 165 $exponent += ($pointpos - 1); 166 $binarypointnumber = str_replace('.', '', $binarypointnumber); 167 $binarypointnumber = $binarypointnumber[0].'.'.substr($binarypointnumber, 1); 168 } 169 } 170 $binarypointnumber = str_pad(substr($binarypointnumber, 0, $maxbits + 2), $maxbits + 2, '0', STR_PAD_RIGHT); 171 return array('normalized'=>$binarypointnumber, 'exponent'=>(int) $exponent); 172 } 173 174 /** 175 * @link http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/binary.html 176 * 177 * @param float $floatvalue 178 * 179 * @return string 180 */ 181 public static function Float2BinaryDecimal($floatvalue) { 182 $maxbits = 128; // to how many bits of precision should the calculations be taken? 183 $intpart = self::trunc($floatvalue); 184 $floatpart = abs($floatvalue - $intpart); 185 $pointbitstring = ''; 186 while (($floatpart != 0) && (strlen($pointbitstring) < $maxbits)) { 187 $floatpart *= 2; 188 $pointbitstring .= (string) self::trunc($floatpart); 189 $floatpart -= self::trunc($floatpart); 190 } 191 $binarypointnumber = decbin($intpart).'.'.$pointbitstring; 192 return $binarypointnumber; 193 } 194 195 /** 196 * @link http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/ieee-expl.html 197 * 198 * @param float $floatvalue 199 * @param int $bits 200 * 201 * @return string|false 202 */ 203 public static function Float2String($floatvalue, $bits) { 204 $exponentbits = 0; 205 $fractionbits = 0; 206 switch ($bits) { 207 case 32: 208 $exponentbits = 8; 209 $fractionbits = 23; 210 break; 211 212 case 64: 213 $exponentbits = 11; 214 $fractionbits = 52; 215 break; 216 217 default: 218 return false; 219 } 220 if ($floatvalue >= 0) { 221 $signbit = '0'; 222 } else { 223 $signbit = '1'; 224 } 225 $normalizedbinary = self::NormalizeBinaryPoint(self::Float2BinaryDecimal($floatvalue), $fractionbits); 226 $biasedexponent = pow(2, $exponentbits - 1) - 1 + $normalizedbinary['exponent']; // (127 or 1023) +/- exponent 227 $exponentbitstring = str_pad(decbin($biasedexponent), $exponentbits, '0', STR_PAD_LEFT); 228 $fractionbitstring = str_pad(substr($normalizedbinary['normalized'], 2), $fractionbits, '0', STR_PAD_RIGHT); 229 230 return self::BigEndian2String(self::Bin2Dec($signbit.$exponentbitstring.$fractionbitstring), $bits % 8, false); 231 } 232 233 /** 234 * @param string $byteword 235 * 236 * @return float|false 237 */ 238 public static function LittleEndian2Float($byteword) { 239 return self::BigEndian2Float(strrev($byteword)); 240 } 241 242 /** 243 * ANSI/IEEE Standard 754-1985, Standard for Binary Floating Point Arithmetic 244 * 245 * @link http://www.psc.edu/general/software/packages/ieee/ieee.html 246 * @link http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/ieee.html 247 * 248 * @param string $byteword 249 * 250 * @return float|false 251 */ 252 public static function BigEndian2Float($byteword) { 253 $bitword = self::BigEndian2Bin($byteword); 254 if (!$bitword) { 255 return 0; 256 } 257 $signbit = $bitword[0]; 258 $floatvalue = 0; 259 $exponentbits = 0; 260 $fractionbits = 0; 261 262 switch (strlen($byteword) * 8) { 263 case 32: 264 $exponentbits = 8; 265 $fractionbits = 23; 266 break; 267 268 case 64: 269 $exponentbits = 11; 270 $fractionbits = 52; 271 break; 272 273 case 80: 274 // 80-bit Apple SANE format 275 // http://www.mactech.com/articles/mactech/Vol.06/06.01/SANENormalized/ 276 $exponentstring = substr($bitword, 1, 15); 277 $isnormalized = intval($bitword[16]); 278 $fractionstring = substr($bitword, 17, 63); 279 $exponent = pow(2, self::Bin2Dec($exponentstring) - 16383); 280 $fraction = $isnormalized + self::DecimalBinary2Float($fractionstring); 281 $floatvalue = $exponent * $fraction; 282 if ($signbit == '1') { 283 $floatvalue *= -1; 284 } 285 return $floatvalue; 286 287 default: 288 return false; 289 } 290 $exponentstring = substr($bitword, 1, $exponentbits); 291 $fractionstring = substr($bitword, $exponentbits + 1, $fractionbits); 292 $exponent = self::Bin2Dec($exponentstring); 293 $fraction = self::Bin2Dec($fractionstring); 294 295 if (($exponent == (pow(2, $exponentbits) - 1)) && ($fraction != 0)) { 296 // Not a Number 297 $floatvalue = false; 298 } elseif (($exponent == (pow(2, $exponentbits) - 1)) && ($fraction == 0)) { 299 if ($signbit == '1') { 300 $floatvalue = '-infinity'; 301 } else { 302 $floatvalue = '+infinity'; 303 } 304 } elseif (($exponent == 0) && ($fraction == 0)) { 305 if ($signbit == '1') { 306 $floatvalue = -0; 307 } else { 308 $floatvalue = 0; 309 } 310 $floatvalue = ($signbit ? 0 : -0); 311 } elseif (($exponent == 0) && ($fraction != 0)) { 312 // These are 'unnormalized' values 313 $floatvalue = pow(2, (-1 * (pow(2, $exponentbits - 1) - 2))) * self::DecimalBinary2Float($fractionstring); 314 if ($signbit == '1') { 315 $floatvalue *= -1; 316 } 317 } elseif ($exponent != 0) { 318 $floatvalue = pow(2, ($exponent - (pow(2, $exponentbits - 1) - 1))) * (1 + self::DecimalBinary2Float($fractionstring)); 319 if ($signbit == '1') { 320 $floatvalue *= -1; 321 } 322 } 323 return (float) $floatvalue; 324 } 325 326 /** 327 * @param string $byteword 328 * @param bool $synchsafe 329 * @param bool $signed 330 * 331 * @return int|float|false 332 * @throws Exception 333 */ 334 public static function BigEndian2Int($byteword, $synchsafe=false, $signed=false) { 335 $intvalue = 0; 336 $bytewordlen = strlen($byteword); 337 if ($bytewordlen == 0) { 338 return false; 339 } 340 for ($i = 0; $i < $bytewordlen; $i++) { 341 if ($synchsafe) { // disregard MSB, effectively 7-bit bytes 342 //$intvalue = $intvalue | (ord($byteword{$i}) & 0x7F) << (($bytewordlen - 1 - $i) * 7); // faster, but runs into problems past 2^31 on 32-bit systems 343 $intvalue += (ord($byteword[$i]) & 0x7F) * pow(2, ($bytewordlen - 1 - $i) * 7); 344 } else { 345 $intvalue += ord($byteword[$i]) * pow(256, ($bytewordlen - 1 - $i)); 346 } 347 } 348 if ($signed && !$synchsafe) { 349 // synchsafe ints are not allowed to be signed 350 if ($bytewordlen <= PHP_INT_SIZE) { 351 $signMaskBit = 0x80 << (8 * ($bytewordlen - 1)); 352 if ($intvalue & $signMaskBit) { 353 $intvalue = 0 - ($intvalue & ($signMaskBit - 1)); 354 } 355 } else { 356 throw new Exception('ERROR: Cannot have signed integers larger than '.(8 * PHP_INT_SIZE).'-bits ('.strlen($byteword).') in self::BigEndian2Int()'); 357 } 358 } 359 return self::CastAsInt($intvalue); 360 } 361 362 /** 363 * @param string $byteword 364 * @param bool $signed 365 * 366 * @return int|float|false 367 */ 368 public static function LittleEndian2Int($byteword, $signed=false) { 369 return self::BigEndian2Int(strrev($byteword), false, $signed); 370 } 371 372 /** 373 * @param string $byteword 374 * 375 * @return string 376 */ 377 public static function LittleEndian2Bin($byteword) { 378 return self::BigEndian2Bin(strrev($byteword)); 379 } 380 381 /** 382 * @param string $byteword 383 * 384 * @return string 385 */ 386 public static function BigEndian2Bin($byteword) { 387 $binvalue = ''; 388 $bytewordlen = strlen($byteword); 389 for ($i = 0; $i < $bytewordlen; $i++) { 390 $binvalue .= str_pad(decbin(ord($byteword[$i])), 8, '0', STR_PAD_LEFT); 391 } 392 return $binvalue; 393 } 394 395 /** 396 * @param int $number 397 * @param int $minbytes 398 * @param bool $synchsafe 399 * @param bool $signed 400 * 401 * @return string 402 * @throws Exception 403 */ 404 public static function BigEndian2String($number, $minbytes=1, $synchsafe=false, $signed=false) { 405 if ($number < 0) { 406 throw new Exception('ERROR: self::BigEndian2String() does not support negative numbers'); 407 } 408 $maskbyte = (($synchsafe || $signed) ? 0x7F : 0xFF); 409 $intstring = ''; 410 if ($signed) { 411 if ($minbytes > PHP_INT_SIZE) { 412 throw new Exception('ERROR: Cannot have signed integers larger than '.(8 * PHP_INT_SIZE).'-bits in self::BigEndian2String()'); 413 } 414 $number = $number & (0x80 << (8 * ($minbytes - 1))); 415 } 416 while ($number != 0) { 417 $quotient = ($number / ($maskbyte + 1)); 418 $intstring = chr(ceil(($quotient - floor($quotient)) * $maskbyte)).$intstring; 419 $number = floor($quotient); 420 } 421 return str_pad($intstring, $minbytes, "\x00", STR_PAD_LEFT); 422 } 423 424 /** 425 * @param int $number 426 * 427 * @return string 428 */ 429 public static function Dec2Bin($number) { 430 while ($number >= 256) { 431 $bytes[] = (($number / 256) - (floor($number / 256))) * 256; 432 $number = floor($number / 256); 433 } 434 $bytes[] = $number; 435 $binstring = ''; 436 for ($i = 0; $i < count($bytes); $i++) { 437 $binstring = (($i == count($bytes) - 1) ? decbin($bytes[$i]) : str_pad(decbin($bytes[$i]), 8, '0', STR_PAD_LEFT)).$binstring; 438 } 439 return $binstring; 440 } 441 442 /** 443 * @param string $binstring 444 * @param bool $signed 445 * 446 * @return int|float 447 */ 448 public static function Bin2Dec($binstring, $signed=false) { 449 $signmult = 1; 450 if ($signed) { 451 if ($binstring[0] == '1') { 452 $signmult = -1; 453 } 454 $binstring = substr($binstring, 1); 455 } 456 $decvalue = 0; 457 for ($i = 0; $i < strlen($binstring); $i++) { 458 $decvalue += ((int) substr($binstring, strlen($binstring) - $i - 1, 1)) * pow(2, $i); 459 } 460 return self::CastAsInt($decvalue * $signmult); 461 } 462 463 /** 464 * @param string $binstring 465 * 466 * @return string 467 */ 468 public static function Bin2String($binstring) { 469 // return 'hi' for input of '0110100001101001' 470 $string = ''; 471 $binstringreversed = strrev($binstring); 472 for ($i = 0; $i < strlen($binstringreversed); $i += 8) { 473 $string = chr(self::Bin2Dec(strrev(substr($binstringreversed, $i, 8)))).$string; 474 } 475 return $string; 476 } 477 478 /** 479 * @param int $number 480 * @param int $minbytes 481 * @param bool $synchsafe 482 * 483 * @return string 484 */ 485 public static function LittleEndian2String($number, $minbytes=1, $synchsafe=false) { 486 $intstring = ''; 487 while ($number > 0) { 488 if ($synchsafe) { 489 $intstring = $intstring.chr($number & 127); 490 $number >>= 7; 491 } else { 492 $intstring = $intstring.chr($number & 255); 493 $number >>= 8; 494 } 495 } 496 return str_pad($intstring, $minbytes, "\x00", STR_PAD_RIGHT); 497 } 498 499 /** 500 * @param mixed $array1 501 * @param mixed $array2 502 * 503 * @return array|false 504 */ 505 public static function array_merge_clobber($array1, $array2) { 506 // written by kcØhireability*com 507 // taken from http://www.php.net/manual/en/function.array-merge-recursive.php 508 if (!is_array($array1) || !is_array($array2)) { 509 return false; 510 } 511 $newarray = $array1; 512 foreach ($array2 as $key => $val) { 513 if (is_array($val) && isset($newarray[$key]) && is_array($newarray[$key])) { 514 $newarray[$key] = self::array_merge_clobber($newarray[$key], $val); 515 } else { 516 $newarray[$key] = $val; 517 } 518 } 519 return $newarray; 520 } 521 522 /** 523 * @param mixed $array1 524 * @param mixed $array2 525 * 526 * @return array|false 527 */ 528 public static function array_merge_noclobber($array1, $array2) { 529 if (!is_array($array1) || !is_array($array2)) { 530 return false; 531 } 532 $newarray = $array1; 533 foreach ($array2 as $key => $val) { 534 if (is_array($val) && isset($newarray[$key]) && is_array($newarray[$key])) { 535 $newarray[$key] = self::array_merge_noclobber($newarray[$key], $val); 536 } elseif (!isset($newarray[$key])) { 537 $newarray[$key] = $val; 538 } 539 } 540 return $newarray; 541 } 542 543 /** 544 * @param mixed $array1 545 * @param mixed $array2 546 * 547 * @return array|false|null 548 */ 549 public static function flipped_array_merge_noclobber($array1, $array2) { 550 if (!is_array($array1) || !is_array($array2)) { 551 return false; 552 } 553 # naturally, this only works non-recursively 554 $newarray = array_flip($array1); 555 foreach (array_flip($array2) as $key => $val) { 556 if (!isset($newarray[$key])) { 557 $newarray[$key] = count($newarray); 558 } 559 } 560 return array_flip($newarray); 561 } 562 563 /** 564 * @param array $theArray 565 * 566 * @return bool 567 */ 568 public static function ksort_recursive(&$theArray) { 569 ksort($theArray); 570 foreach ($theArray as $key => $value) { 571 if (is_array($value)) { 572 self::ksort_recursive($theArray[$key]); 573 } 574 } 575 return true; 576 } 577 578 /** 579 * @param string $filename 580 * @param int $numextensions 581 * 582 * @return string 583 */ 584 public static function fileextension($filename, $numextensions=1) { 585 if (strstr($filename, '.')) { 586 $reversedfilename = strrev($filename); 587 $offset = 0; 588 for ($i = 0; $i < $numextensions; $i++) { 589 $offset = strpos($reversedfilename, '.', $offset + 1); 590 if ($offset === false) { 591 return ''; 592 } 593 } 594 return strrev(substr($reversedfilename, 0, $offset)); 595 } 596 return ''; 597 } 598 599 /** 600 * @param int $seconds 601 * 602 * @return string 603 */ 604 public static function PlaytimeString($seconds) { 605 $sign = (($seconds < 0) ? '-' : ''); 606 $seconds = round(abs($seconds)); 607 $H = (int) floor( $seconds / 3600); 608 $M = (int) floor(($seconds - (3600 * $H) ) / 60); 609 $S = (int) round( $seconds - (3600 * $H) - (60 * $M) ); 610 return $sign.($H ? $H.':' : '').($H ? str_pad($M, 2, '0', STR_PAD_LEFT) : intval($M)).':'.str_pad($S, 2, 0, STR_PAD_LEFT); 611 } 612 613 /** 614 * @param int $macdate 615 * 616 * @return int|float 617 */ 618 public static function DateMac2Unix($macdate) { 619 // Macintosh timestamp: seconds since 00:00h January 1, 1904 620 // UNIX timestamp: seconds since 00:00h January 1, 1970 621 return self::CastAsInt($macdate - 2082844800); 622 } 623 624 /** 625 * @param string $rawdata 626 * 627 * @return float 628 */ 629 public static function FixedPoint8_8($rawdata) { 630 return self::BigEndian2Int(substr($rawdata, 0, 1)) + (float) (self::BigEndian2Int(substr($rawdata, 1, 1)) / pow(2, 8)); 631 } 632 633 /** 634 * @param string $rawdata 635 * 636 * @return float 637 */ 638 public static function FixedPoint16_16($rawdata) { 639 return self::BigEndian2Int(substr($rawdata, 0, 2)) + (float) (self::BigEndian2Int(substr($rawdata, 2, 2)) / pow(2, 16)); 640 } 641 642 /** 643 * @param string $rawdata 644 * 645 * @return float 646 */ 647 public static function FixedPoint2_30($rawdata) { 648 $binarystring = self::BigEndian2Bin($rawdata); 649 return self::Bin2Dec(substr($binarystring, 0, 2)) + (float) (self::Bin2Dec(substr($binarystring, 2, 30)) / pow(2, 30)); 650 } 651 652 653 /** 654 * @param string $ArrayPath 655 * @param string $Separator 656 * @param mixed $Value 657 * 658 * @return array 659 */ 660 public static function CreateDeepArray($ArrayPath, $Separator, $Value) { 661 // assigns $Value to a nested array path: 662 // $foo = self::CreateDeepArray('/path/to/my', '/', 'file.txt') 663 // is the same as: 664 // $foo = array('path'=>array('to'=>'array('my'=>array('file.txt')))); 665 // or 666 // $foo['path']['to']['my'] = 'file.txt'; 667 $ArrayPath = ltrim($ArrayPath, $Separator); 668 if (($pos = strpos($ArrayPath, $Separator)) !== false) { 669 $ReturnedArray[substr($ArrayPath, 0, $pos)] = self::CreateDeepArray(substr($ArrayPath, $pos + 1), $Separator, $Value); 670 } else { 671 $ReturnedArray[$ArrayPath] = $Value; 672 } 673 return $ReturnedArray; 674 } 675 676 /** 677 * @param array $arraydata 678 * @param bool $returnkey 679 * 680 * @return int|false 681 */ 682 public static function array_max($arraydata, $returnkey=false) { 683 $maxvalue = false; 684 $maxkey = false; 685 foreach ($arraydata as $key => $value) { 686 if (!is_array($value)) { 687 if (($maxvalue === false) || ($value > $maxvalue)) { 688 $maxvalue = $value; 689 $maxkey = $key; 690 } 691 } 692 } 693 return ($returnkey ? $maxkey : $maxvalue); 694 } 695 696 /** 697 * @param array $arraydata 698 * @param bool $returnkey 699 * 700 * @return int|false 701 */ 702 public static function array_min($arraydata, $returnkey=false) { 703 $minvalue = false; 704 $minkey = false; 705 foreach ($arraydata as $key => $value) { 706 if (!is_array($value)) { 707 if (($minvalue === false) || ($value < $minvalue)) { 708 $minvalue = $value; 709 $minkey = $key; 710 } 711 } 712 } 713 return ($returnkey ? $minkey : $minvalue); 714 } 715 716 /** 717 * @param string $XMLstring 718 * 719 * @return array|false 720 */ 721 public static function XML2array($XMLstring) { 722 if (function_exists('simplexml_load_string') && function_exists('libxml_disable_entity_loader')) { 723 // http://websec.io/2012/08/27/Preventing-XEE-in-PHP.html 724 // https://core.trac.wordpress.org/changeset/29378 725 $loader = libxml_disable_entity_loader(true); 726 $XMLobject = simplexml_load_string($XMLstring, 'SimpleXMLElement', LIBXML_NOENT); 727 $return = self::SimpleXMLelement2array($XMLobject); 728 libxml_disable_entity_loader($loader); 729 return $return; 730 } 731 return false; 732 } 733 734 /** 735 * @param SimpleXMLElement|array|mixed $XMLobject 736 * 737 * @return mixed 738 */ 739 public static function SimpleXMLelement2array($XMLobject) { 740 if (!is_object($XMLobject) && !is_array($XMLobject)) { 741 return $XMLobject; 742 } 743 $XMLarray = $XMLobject instanceof SimpleXMLElement ? get_object_vars($XMLobject) : $XMLobject; 744 foreach ($XMLarray as $key => $value) { 745 $XMLarray[$key] = self::SimpleXMLelement2array($value); 746 } 747 return $XMLarray; 748 } 749 750 /** 751 * Returns checksum for a file from starting position to absolute end position. 752 * 753 * @param string $file 754 * @param int $offset 755 * @param int $end 756 * @param string $algorithm 757 * 758 * @return string|false 759 * @throws getid3_exception 760 */ 761 public static function hash_data($file, $offset, $end, $algorithm) { 762 if (!self::intValueSupported($end)) { 763 return false; 764 } 765 if (!in_array($algorithm, array('md5', 'sha1'))) { 766 throw new getid3_exception('Invalid algorithm ('.$algorithm.') in self::hash_data()'); 767 } 768 769 $size = $end - $offset; 770 771 $fp = fopen($file, 'rb'); 772 fseek($fp, $offset); 773 $ctx = hash_init($algorithm); 774 while ($size > 0) { 775 $buffer = fread($fp, min($size, getID3::FREAD_BUFFER_SIZE)); 776 hash_update($ctx, $buffer); 777 $size -= getID3::FREAD_BUFFER_SIZE; 778 } 779 $hash = hash_final($ctx); 780 fclose($fp); 781 782 return $hash; 783 } 784 785 /** 786 * @param string $filename_source 787 * @param string $filename_dest 788 * @param int $offset 789 * @param int $length 790 * 791 * @return bool 792 * @throws Exception 793 * 794 * @deprecated Unused, may be removed in future versions of getID3 795 */ 796 public static function CopyFileParts($filename_source, $filename_dest, $offset, $length) { 797 if (!self::intValueSupported($offset + $length)) { 798 throw new Exception('cannot copy file portion, it extends beyond the '.round(PHP_INT_MAX / 1073741824).'GB limit'); 799 } 800 if (is_readable($filename_source) && is_file($filename_source) && ($fp_src = fopen($filename_source, 'rb'))) { 801 if (($fp_dest = fopen($filename_dest, 'wb'))) { 802 if (fseek($fp_src, $offset) == 0) { 803 $byteslefttowrite = $length; 804 while (($byteslefttowrite > 0) && ($buffer = fread($fp_src, min($byteslefttowrite, getID3::FREAD_BUFFER_SIZE)))) { 805 $byteswritten = fwrite($fp_dest, $buffer, $byteslefttowrite); 806 $byteslefttowrite -= $byteswritten; 807 } 808 fclose($fp_dest); 809 return true; 810 } else { 811 fclose($fp_src); 812 throw new Exception('failed to seek to offset '.$offset.' in '.$filename_source); 813 } 814 } else { 815 throw new Exception('failed to create file for writing '.$filename_dest); 816 } 817 } else { 818 throw new Exception('failed to open file for reading '.$filename_source); 819 } 820 } 821 822 /** 823 * @param int $charval 824 * 825 * @return string 826 */ 827 public static function iconv_fallback_int_utf8($charval) { 828 if ($charval < 128) { 829 // 0bbbbbbb 830 $newcharstring = chr($charval); 831 } elseif ($charval < 2048) { 832 // 110bbbbb 10bbbbbb 833 $newcharstring = chr(($charval >> 6) | 0xC0); 834 $newcharstring .= chr(($charval & 0x3F) | 0x80); 835 } elseif ($charval < 65536) { 836 // 1110bbbb 10bbbbbb 10bbbbbb 837 $newcharstring = chr(($charval >> 12) | 0xE0); 838 $newcharstring .= chr(($charval >> 6) | 0xC0); 839 $newcharstring .= chr(($charval & 0x3F) | 0x80); 840 } else { 841 // 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb 842 $newcharstring = chr(($charval >> 18) | 0xF0); 843 $newcharstring .= chr(($charval >> 12) | 0xC0); 844 $newcharstring .= chr(($charval >> 6) | 0xC0); 845 $newcharstring .= chr(($charval & 0x3F) | 0x80); 846 } 847 return $newcharstring; 848 } 849 850 /** 851 * ISO-8859-1 => UTF-8 852 * 853 * @param string $string 854 * @param bool $bom 855 * 856 * @return string 857 */ 858 public static function iconv_fallback_iso88591_utf8($string, $bom=false) { 859 if (function_exists('utf8_encode')) { 860 return utf8_encode($string); 861 } 862 // utf8_encode() unavailable, use getID3()'s iconv_fallback() conversions (possibly PHP is compiled without XML support) 863 $newcharstring = ''; 864 if ($bom) { 865 $newcharstring .= "\xEF\xBB\xBF"; 866 } 867 for ($i = 0; $i < strlen($string); $i++) { 868 $charval = ord($string[$i]); 869 $newcharstring .= self::iconv_fallback_int_utf8($charval); 870 } 871 return $newcharstring; 872 } 873 874 /** 875 * ISO-8859-1 => UTF-16BE 876 * 877 * @param string $string 878 * @param bool $bom 879 * 880 * @return string 881 */ 882 public static function iconv_fallback_iso88591_utf16be($string, $bom=false) { 883 $newcharstring = ''; 884 if ($bom) { 885 $newcharstring .= "\xFE\xFF"; 886 } 887 for ($i = 0; $i < strlen($string); $i++) { 888 $newcharstring .= "\x00".$string[$i]; 889 } 890 return $newcharstring; 891 } 892 893 /** 894 * ISO-8859-1 => UTF-16LE 895 * 896 * @param string $string 897 * @param bool $bom 898 * 899 * @return string 900 */ 901 public static function iconv_fallback_iso88591_utf16le($string, $bom=false) { 902 $newcharstring = ''; 903 if ($bom) { 904 $newcharstring .= "\xFF\xFE"; 905 } 906 for ($i = 0; $i < strlen($string); $i++) { 907 $newcharstring .= $string[$i]."\x00"; 908 } 909 return $newcharstring; 910 } 911 912 /** 913 * ISO-8859-1 => UTF-16LE (BOM) 914 * 915 * @param string $string 916 * 917 * @return string 918 */ 919 public static function iconv_fallback_iso88591_utf16($string) { 920 return self::iconv_fallback_iso88591_utf16le($string, true); 921 } 922 923 /** 924 * UTF-8 => ISO-8859-1 925 * 926 * @param string $string 927 * 928 * @return string 929 */ 930 public static function iconv_fallback_utf8_iso88591($string) { 931 if (function_exists('utf8_decode')) { 932 return utf8_decode($string); 933 } 934 // utf8_decode() unavailable, use getID3()'s iconv_fallback() conversions (possibly PHP is compiled without XML support) 935 $newcharstring = ''; 936 $offset = 0; 937 $stringlength = strlen($string); 938 while ($offset < $stringlength) { 939 if ((ord($string[$offset]) | 0x07) == 0xF7) { 940 // 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb 941 $charval = ((ord($string[($offset + 0)]) & 0x07) << 18) & 942 ((ord($string[($offset + 1)]) & 0x3F) << 12) & 943 ((ord($string[($offset + 2)]) & 0x3F) << 6) & 944 (ord($string[($offset + 3)]) & 0x3F); 945 $offset += 4; 946 } elseif ((ord($string[$offset]) | 0x0F) == 0xEF) { 947 // 1110bbbb 10bbbbbb 10bbbbbb 948 $charval = ((ord($string[($offset + 0)]) & 0x0F) << 12) & 949 ((ord($string[($offset + 1)]) & 0x3F) << 6) & 950 (ord($string[($offset + 2)]) & 0x3F); 951 $offset += 3; 952 } elseif ((ord($string[$offset]) | 0x1F) == 0xDF) { 953 // 110bbbbb 10bbbbbb 954 $charval = ((ord($string[($offset + 0)]) & 0x1F) << 6) & 955 (ord($string[($offset + 1)]) & 0x3F); 956 $offset += 2; 957 } elseif ((ord($string[$offset]) | 0x7F) == 0x7F) { 958 // 0bbbbbbb 959 $charval = ord($string[$offset]); 960 $offset += 1; 961 } else { 962 // error? throw some kind of warning here? 963 $charval = false; 964 $offset += 1; 965 } 966 if ($charval !== false) { 967 $newcharstring .= (($charval < 256) ? chr($charval) : '?'); 968 } 969 } 970 return $newcharstring; 971 } 972 973 /** 974 * UTF-8 => UTF-16BE 975 * 976 * @param string $string 977 * @param bool $bom 978 * 979 * @return string 980 */ 981 public static function iconv_fallback_utf8_utf16be($string, $bom=false) { 982 $newcharstring = ''; 983 if ($bom) { 984 $newcharstring .= "\xFE\xFF"; 985 } 986 $offset = 0; 987 $stringlength = strlen($string); 988 while ($offset < $stringlength) { 989 if ((ord($string[$offset]) | 0x07) == 0xF7) { 990 // 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb 991 $charval = ((ord($string[($offset + 0)]) & 0x07) << 18) & 992 ((ord($string[($offset + 1)]) & 0x3F) << 12) & 993 ((ord($string[($offset + 2)]) & 0x3F) << 6) & 994 (ord($string[($offset + 3)]) & 0x3F); 995 $offset += 4; 996 } elseif ((ord($string[$offset]) | 0x0F) == 0xEF) { 997 // 1110bbbb 10bbbbbb 10bbbbbb 998 $charval = ((ord($string[($offset + 0)]) & 0x0F) << 12) & 999 ((ord($string[($offset + 1)]) & 0x3F) << 6) & 1000 (ord($string[($offset + 2)]) & 0x3F); 1001 $offset += 3; 1002 } elseif ((ord($string[$offset]) | 0x1F) == 0xDF) { 1003 // 110bbbbb 10bbbbbb 1004 $charval = ((ord($string[($offset + 0)]) & 0x1F) << 6) & 1005 (ord($string[($offset + 1)]) & 0x3F); 1006 $offset += 2; 1007 } elseif ((ord($string[$offset]) | 0x7F) == 0x7F) { 1008 // 0bbbbbbb 1009 $charval = ord($string[$offset]); 1010 $offset += 1; 1011 } else { 1012 // error? throw some kind of warning here? 1013 $charval = false; 1014 $offset += 1; 1015 } 1016 if ($charval !== false) { 1017 $newcharstring .= (($charval < 65536) ? self::BigEndian2String($charval, 2) : "\x00".'?'); 1018 } 1019 } 1020 return $newcharstring; 1021 } 1022 1023 /** 1024 * UTF-8 => UTF-16LE 1025 * 1026 * @param string $string 1027 * @param bool $bom 1028 * 1029 * @return string 1030 */ 1031 public static function iconv_fallback_utf8_utf16le($string, $bom=false) { 1032 $newcharstring = ''; 1033 if ($bom) { 1034 $newcharstring .= "\xFF\xFE"; 1035 } 1036 $offset = 0; 1037 $stringlength = strlen($string); 1038 while ($offset < $stringlength) { 1039 if ((ord($string[$offset]) | 0x07) == 0xF7) { 1040 // 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb 1041 $charval = ((ord($string[($offset + 0)]) & 0x07) << 18) & 1042 ((ord($string[($offset + 1)]) & 0x3F) << 12) & 1043 ((ord($string[($offset + 2)]) & 0x3F) << 6) & 1044 (ord($string[($offset + 3)]) & 0x3F); 1045 $offset += 4; 1046 } elseif ((ord($string[$offset]) | 0x0F) == 0xEF) { 1047 // 1110bbbb 10bbbbbb 10bbbbbb 1048 $charval = ((ord($string[($offset + 0)]) & 0x0F) << 12) & 1049 ((ord($string[($offset + 1)]) & 0x3F) << 6) & 1050 (ord($string[($offset + 2)]) & 0x3F); 1051 $offset += 3; 1052 } elseif ((ord($string[$offset]) | 0x1F) == 0xDF) { 1053 // 110bbbbb 10bbbbbb 1054 $charval = ((ord($string[($offset + 0)]) & 0x1F) << 6) & 1055 (ord($string[($offset + 1)]) & 0x3F); 1056 $offset += 2; 1057 } elseif ((ord($string[$offset]) | 0x7F) == 0x7F) { 1058 // 0bbbbbbb 1059 $charval = ord($string[$offset]); 1060 $offset += 1; 1061 } else { 1062 // error? maybe throw some warning here? 1063 $charval = false; 1064 $offset += 1; 1065 } 1066 if ($charval !== false) { 1067 $newcharstring .= (($charval < 65536) ? self::LittleEndian2String($charval, 2) : '?'."\x00"); 1068 } 1069 } 1070 return $newcharstring; 1071 } 1072 1073 /** 1074 * UTF-8 => UTF-16LE (BOM) 1075 * 1076 * @param string $string 1077 * 1078 * @return string 1079 */ 1080 public static function iconv_fallback_utf8_utf16($string) { 1081 return self::iconv_fallback_utf8_utf16le($string, true); 1082 } 1083 1084 /** 1085 * UTF-16BE => UTF-8 1086 * 1087 * @param string $string 1088 * 1089 * @return string 1090 */ 1091 public static function iconv_fallback_utf16be_utf8($string) { 1092 if (substr($string, 0, 2) == "\xFE\xFF") { 1093 // strip BOM 1094 $string = substr($string, 2); 1095 } 1096 $newcharstring = ''; 1097 for ($i = 0; $i < strlen($string); $i += 2) { 1098 $charval = self::BigEndian2Int(substr($string, $i, 2)); 1099 $newcharstring .= self::iconv_fallback_int_utf8($charval); 1100 } 1101 return $newcharstring; 1102 } 1103 1104 /** 1105 * UTF-16LE => UTF-8 1106 * 1107 * @param string $string 1108 * 1109 * @return string 1110 */ 1111 public static function iconv_fallback_utf16le_utf8($string) { 1112 if (substr($string, 0, 2) == "\xFF\xFE") { 1113 // strip BOM 1114 $string = substr($string, 2); 1115 } 1116 $newcharstring = ''; 1117 for ($i = 0; $i < strlen($string); $i += 2) { 1118 $charval = self::LittleEndian2Int(substr($string, $i, 2)); 1119 $newcharstring .= self::iconv_fallback_int_utf8($charval); 1120 } 1121 return $newcharstring; 1122 } 1123 1124 /** 1125 * UTF-16BE => ISO-8859-1 1126 * 1127 * @param string $string 1128 * 1129 * @return string 1130 */ 1131 public static function iconv_fallback_utf16be_iso88591($string) { 1132 if (substr($string, 0, 2) == "\xFE\xFF") { 1133 // strip BOM 1134 $string = substr($string, 2); 1135 } 1136 $newcharstring = ''; 1137 for ($i = 0; $i < strlen($string); $i += 2) { 1138 $charval = self::BigEndian2Int(substr($string, $i, 2)); 1139 $newcharstring .= (($charval < 256) ? chr($charval) : '?'); 1140 } 1141 return $newcharstring; 1142 } 1143 1144 /** 1145 * UTF-16LE => ISO-8859-1 1146 * 1147 * @param string $string 1148 * 1149 * @return string 1150 */ 1151 public static function iconv_fallback_utf16le_iso88591($string) { 1152 if (substr($string, 0, 2) == "\xFF\xFE") { 1153 // strip BOM 1154 $string = substr($string, 2); 1155 } 1156 $newcharstring = ''; 1157 for ($i = 0; $i < strlen($string); $i += 2) { 1158 $charval = self::LittleEndian2Int(substr($string, $i, 2)); 1159 $newcharstring .= (($charval < 256) ? chr($charval) : '?'); 1160 } 1161 return $newcharstring; 1162 } 1163 1164 /** 1165 * UTF-16 (BOM) => ISO-8859-1 1166 * 1167 * @param string $string 1168 * 1169 * @return string 1170 */ 1171 public static function iconv_fallback_utf16_iso88591($string) { 1172 $bom = substr($string, 0, 2); 1173 if ($bom == "\xFE\xFF") { 1174 return self::iconv_fallback_utf16be_iso88591(substr($string, 2)); 1175 } elseif ($bom == "\xFF\xFE") { 1176 return self::iconv_fallback_utf16le_iso88591(substr($string, 2)); 1177 } 1178 return $string; 1179 } 1180 1181 /** 1182 * UTF-16 (BOM) => UTF-8 1183 * 1184 * @param string $string 1185 * 1186 * @return string 1187 */ 1188 public static function iconv_fallback_utf16_utf8($string) { 1189 $bom = substr($string, 0, 2); 1190 if ($bom == "\xFE\xFF") { 1191 return self::iconv_fallback_utf16be_utf8(substr($string, 2)); 1192 } elseif ($bom == "\xFF\xFE") { 1193 return self::iconv_fallback_utf16le_utf8(substr($string, 2)); 1194 } 1195 return $string; 1196 } 1197 1198 /** 1199 * @param string $in_charset 1200 * @param string $out_charset 1201 * @param string $string 1202 * 1203 * @return string 1204 * @throws Exception 1205 */ 1206 public static function iconv_fallback($in_charset, $out_charset, $string) { 1207 1208 if ($in_charset == $out_charset) { 1209 return $string; 1210 } 1211 1212 // mb_convert_encoding() available 1213 if (function_exists('mb_convert_encoding')) { 1214 if ((strtoupper($in_charset) == 'UTF-16') && (substr($string, 0, 2) != "\xFE\xFF") && (substr($string, 0, 2) != "\xFF\xFE")) { 1215 // if BOM missing, mb_convert_encoding will mishandle the conversion, assume UTF-16BE and prepend appropriate BOM 1216 $string = "\xFF\xFE".$string; 1217 } 1218 if ((strtoupper($in_charset) == 'UTF-16') && (strtoupper($out_charset) == 'UTF-8')) { 1219 if (($string == "\xFF\xFE") || ($string == "\xFE\xFF")) { 1220 // if string consists of only BOM, mb_convert_encoding will return the BOM unmodified 1221 return ''; 1222 } 1223 } 1224 if ($converted_string = @mb_convert_encoding($string, $out_charset, $in_charset)) { 1225 switch ($out_charset) { 1226 case 'ISO-8859-1': 1227 $converted_string = rtrim($converted_string, "\x00"); 1228 break; 1229 } 1230 return $converted_string; 1231 } 1232 return $string; 1233 1234 // iconv() available 1235 } elseif (function_exists('iconv')) { 1236 if ($converted_string = @iconv($in_charset, $out_charset.'//TRANSLIT', $string)) { 1237 switch ($out_charset) { 1238 case 'ISO-8859-1': 1239 $converted_string = rtrim($converted_string, "\x00"); 1240 break; 1241 } 1242 return $converted_string; 1243 } 1244 1245 // iconv() may sometimes fail with "illegal character in input string" error message 1246 // and return an empty string, but returning the unconverted string is more useful 1247 return $string; 1248 } 1249 1250 1251 // neither mb_convert_encoding or iconv() is available 1252 static $ConversionFunctionList = array(); 1253 if (empty($ConversionFunctionList)) { 1254 $ConversionFunctionList['ISO-8859-1']['UTF-8'] = 'iconv_fallback_iso88591_utf8'; 1255 $ConversionFunctionList['ISO-8859-1']['UTF-16'] = 'iconv_fallback_iso88591_utf16'; 1256 $ConversionFunctionList['ISO-8859-1']['UTF-16BE'] = 'iconv_fallback_iso88591_utf16be'; 1257 $ConversionFunctionList['ISO-8859-1']['UTF-16LE'] = 'iconv_fallback_iso88591_utf16le'; 1258 $ConversionFunctionList['UTF-8']['ISO-8859-1'] = 'iconv_fallback_utf8_iso88591'; 1259 $ConversionFunctionList['UTF-8']['UTF-16'] = 'iconv_fallback_utf8_utf16'; 1260 $ConversionFunctionList['UTF-8']['UTF-16BE'] = 'iconv_fallback_utf8_utf16be'; 1261 $ConversionFunctionList['UTF-8']['UTF-16LE'] = 'iconv_fallback_utf8_utf16le'; 1262 $ConversionFunctionList['UTF-16']['ISO-8859-1'] = 'iconv_fallback_utf16_iso88591'; 1263 $ConversionFunctionList['UTF-16']['UTF-8'] = 'iconv_fallback_utf16_utf8'; 1264 $ConversionFunctionList['UTF-16LE']['ISO-8859-1'] = 'iconv_fallback_utf16le_iso88591'; 1265 $ConversionFunctionList['UTF-16LE']['UTF-8'] = 'iconv_fallback_utf16le_utf8'; 1266 $ConversionFunctionList['UTF-16BE']['ISO-8859-1'] = 'iconv_fallback_utf16be_iso88591'; 1267 $ConversionFunctionList['UTF-16BE']['UTF-8'] = 'iconv_fallback_utf16be_utf8'; 1268 } 1269 if (isset($ConversionFunctionList[strtoupper($in_charset)][strtoupper($out_charset)])) { 1270 $ConversionFunction = $ConversionFunctionList[strtoupper($in_charset)][strtoupper($out_charset)]; 1271 return self::$ConversionFunction($string); 1272 } 1273 throw new Exception('PHP does not has mb_convert_encoding() or iconv() support - cannot convert from '.$in_charset.' to '.$out_charset); 1274 } 1275 1276 /** 1277 * @param mixed $data 1278 * @param string $charset 1279 * 1280 * @return mixed 1281 */ 1282 public static function recursiveMultiByteCharString2HTML($data, $charset='ISO-8859-1') { 1283 if (is_string($data)) { 1284 return self::MultiByteCharString2HTML($data, $charset); 1285 } elseif (is_array($data)) { 1286 $return_data = array(); 1287 foreach ($data as $key => $value) { 1288 $return_data[$key] = self::recursiveMultiByteCharString2HTML($value, $charset); 1289 } 1290 return $return_data; 1291 } 1292 // integer, float, objects, resources, etc 1293 return $data; 1294 } 1295 1296 /** 1297 * @param string|int|float $string 1298 * @param string $charset 1299 * 1300 * @return string 1301 */ 1302 public static function MultiByteCharString2HTML($string, $charset='ISO-8859-1') { 1303 $string = (string) $string; // in case trying to pass a numeric (float, int) string, would otherwise return an empty string 1304 $HTMLstring = ''; 1305 1306 switch (strtolower($charset)) { 1307 case '1251': 1308 case '1252': 1309 case '866': 1310 case '932': 1311 case '936': 1312 case '950': 1313 case 'big5': 1314 case 'big5-hkscs': 1315 case 'cp1251': 1316 case 'cp1252': 1317 case 'cp866': 1318 case 'euc-jp': 1319 case 'eucjp': 1320 case 'gb2312': 1321 case 'ibm866': 1322 case 'iso-8859-1': 1323 case 'iso-8859-15': 1324 case 'iso8859-1': 1325 case 'iso8859-15': 1326 case 'koi8-r': 1327 case 'koi8-ru': 1328 case 'koi8r': 1329 case 'shift_jis': 1330 case 'sjis': 1331 case 'win-1251': 1332 case 'windows-1251': 1333 case 'windows-1252': 1334 $HTMLstring = htmlentities($string, ENT_COMPAT, $charset); 1335 break; 1336 1337 case 'utf-8': 1338 $strlen = strlen($string); 1339 for ($i = 0; $i < $strlen; $i++) { 1340 $char_ord_val = ord($string[$i]); 1341 $charval = 0; 1342 if ($char_ord_val < 0x80) { 1343 $charval = $char_ord_val; 1344 } elseif ((($char_ord_val & 0xF0) >> 4) == 0x0F && $i+3 < $strlen) { 1345 $charval = (($char_ord_val & 0x07) << 18); 1346 $charval += ((ord($string[++$i]) & 0x3F) << 12); 1347 $charval += ((ord($string[++$i]) & 0x3F) << 6); 1348 $charval += (ord($string[++$i]) & 0x3F); 1349 } elseif ((($char_ord_val & 0xE0) >> 5) == 0x07 && $i+2 < $strlen) { 1350 $charval = (($char_ord_val & 0x0F) << 12); 1351 $charval += ((ord($string[++$i]) & 0x3F) << 6); 1352 $charval += (ord($string[++$i]) & 0x3F); 1353 } elseif ((($char_ord_val & 0xC0) >> 6) == 0x03 && $i+1 < $strlen) { 1354 $charval = (($char_ord_val & 0x1F) << 6); 1355 $charval += (ord($string[++$i]) & 0x3F); 1356 } 1357 if (($charval >= 32) && ($charval <= 127)) { 1358 $HTMLstring .= htmlentities(chr($charval)); 1359 } else { 1360 $HTMLstring .= '&#'.$charval.';'; 1361 } 1362 } 1363 break; 1364 1365 case 'utf-16le': 1366 for ($i = 0; $i < strlen($string); $i += 2) { 1367 $charval = self::LittleEndian2Int(substr($string, $i, 2)); 1368 if (($charval >= 32) && ($charval <= 127)) { 1369 $HTMLstring .= chr($charval); 1370 } else { 1371 $HTMLstring .= '&#'.$charval.';'; 1372 } 1373 } 1374 break; 1375 1376 case 'utf-16be': 1377 for ($i = 0; $i < strlen($string); $i += 2) { 1378 $charval = self::BigEndian2Int(substr($string, $i, 2)); 1379 if (($charval >= 32) && ($charval <= 127)) { 1380 $HTMLstring .= chr($charval); 1381 } else { 1382 $HTMLstring .= '&#'.$charval.';'; 1383 } 1384 } 1385 break; 1386 1387 default: 1388 $HTMLstring = 'ERROR: Character set "'.$charset.'" not supported in MultiByteCharString2HTML()'; 1389 break; 1390 } 1391 return $HTMLstring; 1392 } 1393 1394 /** 1395 * @param int $namecode 1396 * 1397 * @return string 1398 */ 1399 public static function RGADnameLookup($namecode) { 1400 static $RGADname = array(); 1401 if (empty($RGADname)) { 1402 $RGADname[0] = 'not set'; 1403 $RGADname[1] = 'Track Gain Adjustment'; 1404 $RGADname[2] = 'Album Gain Adjustment'; 1405 } 1406 1407 return (isset($RGADname[$namecode]) ? $RGADname[$namecode] : ''); 1408 } 1409 1410 /** 1411 * @param int $originatorcode 1412 * 1413 * @return string 1414 */ 1415 public static function RGADoriginatorLookup($originatorcode) { 1416 static $RGADoriginator = array(); 1417 if (empty($RGADoriginator)) { 1418 $RGADoriginator[0] = 'unspecified'; 1419 $RGADoriginator[1] = 'pre-set by artist/producer/mastering engineer'; 1420 $RGADoriginator[2] = 'set by user'; 1421 $RGADoriginator[3] = 'determined automatically'; 1422 } 1423 1424 return (isset($RGADoriginator[$originatorcode]) ? $RGADoriginator[$originatorcode] : ''); 1425 } 1426 1427 /** 1428 * @param int $rawadjustment 1429 * @param int $signbit 1430 * 1431 * @return float 1432 */ 1433 public static function RGADadjustmentLookup($rawadjustment, $signbit) { 1434 $adjustment = (float) $rawadjustment / 10; 1435 if ($signbit == 1) { 1436 $adjustment *= -1; 1437 } 1438 return $adjustment; 1439 } 1440 1441 /** 1442 * @param int $namecode 1443 * @param int $originatorcode 1444 * @param int $replaygain 1445 * 1446 * @return string 1447 */ 1448 public static function RGADgainString($namecode, $originatorcode, $replaygain) { 1449 if ($replaygain < 0) { 1450 $signbit = '1'; 1451 } else { 1452 $signbit = '0'; 1453 } 1454 $storedreplaygain = intval(round($replaygain * 10)); 1455 $gainstring = str_pad(decbin($namecode), 3, '0', STR_PAD_LEFT); 1456 $gainstring .= str_pad(decbin($originatorcode), 3, '0', STR_PAD_LEFT); 1457 $gainstring .= $signbit; 1458 $gainstring .= str_pad(decbin($storedreplaygain), 9, '0', STR_PAD_LEFT); 1459 1460 return $gainstring; 1461 } 1462 1463 /** 1464 * @param float $amplitude 1465 * 1466 * @return float 1467 */ 1468 public static function RGADamplitude2dB($amplitude) { 1469 return 20 * log10($amplitude); 1470 } 1471 1472 /** 1473 * @param string $imgData 1474 * @param array $imageinfo 1475 * 1476 * @return array|false 1477 */ 1478 public static function GetDataImageSize($imgData, &$imageinfo=array()) { 1479 if (PHP_VERSION_ID >= 50400) { 1480 $GetDataImageSize = @getimagesizefromstring($imgData, $imageinfo); 1481 if ($GetDataImageSize === false || !isset($GetDataImageSize[0], $GetDataImageSize[1])) { 1482 return false; 1483 } 1484 $GetDataImageSize['height'] = $GetDataImageSize[0]; 1485 $GetDataImageSize['width'] = $GetDataImageSize[1]; 1486 return $GetDataImageSize; 1487 } 1488 static $tempdir = ''; 1489 if (empty($tempdir)) { 1490 if (function_exists('sys_get_temp_dir')) { 1491 $tempdir = sys_get_temp_dir(); // https://github.com/JamesHeinrich/getID3/issues/52 1492 } 1493 1494 // yes this is ugly, feel free to suggest a better way 1495 if (include_once(dirname(__FILE__).'/getid3.php')) { 1496 $getid3_temp = new getID3(); 1497 if ($getid3_temp_tempdir = $getid3_temp->tempdir) { 1498 $tempdir = $getid3_temp_tempdir; 1499 } 1500 unset($getid3_temp, $getid3_temp_tempdir); 1501 } 1502 } 1503 $GetDataImageSize = false; 1504 if ($tempfilename = tempnam($tempdir, 'gI3')) { 1505 if (is_writable($tempfilename) && is_file($tempfilename) && ($tmp = fopen($tempfilename, 'wb'))) { 1506 fwrite($tmp, $imgData); 1507 fclose($tmp); 1508 $GetDataImageSize = @getimagesize($tempfilename, $imageinfo); 1509 if (($GetDataImageSize === false) || !isset($GetDataImageSize[0]) || !isset($GetDataImageSize[1])) { 1510 return false; 1511 } 1512 $GetDataImageSize['height'] = $GetDataImageSize[0]; 1513 $GetDataImageSize['width'] = $GetDataImageSize[1]; 1514 } 1515 unlink($tempfilename); 1516 } 1517 return $GetDataImageSize; 1518 } 1519 1520 /** 1521 * @param string $mime_type 1522 * 1523 * @return string 1524 */ 1525 public static function ImageExtFromMime($mime_type) { 1526 // temporary way, works OK for now, but should be reworked in the future 1527 return str_replace(array('image/', 'x-', 'jpeg'), array('', '', 'jpg'), $mime_type); 1528 } 1529 1530 /** 1531 * @param array $ThisFileInfo 1532 * @param bool $option_tags_html default true (just as in the main getID3 class) 1533 * 1534 * @return bool 1535 */ 1536 public static function CopyTagsToComments(&$ThisFileInfo, $option_tags_html=true) { 1537 // Copy all entries from ['tags'] into common ['comments'] 1538 if (!empty($ThisFileInfo['tags'])) { 1539 if (isset($ThisFileInfo['tags']['id3v1'])) { 1540 // bubble ID3v1 to the end, if present to aid in detecting bad ID3v1 encodings 1541 $ID3v1 = $ThisFileInfo['tags']['id3v1']; 1542 unset($ThisFileInfo['tags']['id3v1']); 1543 $ThisFileInfo['tags']['id3v1'] = $ID3v1; 1544 unset($ID3v1); 1545 } 1546 foreach ($ThisFileInfo['tags'] as $tagtype => $tagarray) { 1547 foreach ($tagarray as $tagname => $tagdata) { 1548 foreach ($tagdata as $key => $value) { 1549 if (!empty($value)) { 1550 if (empty($ThisFileInfo['comments'][$tagname])) { 1551 1552 // fall through and append value 1553 1554 } elseif ($tagtype == 'id3v1') { 1555 1556 $newvaluelength = strlen(trim($value)); 1557 foreach ($ThisFileInfo['comments'][$tagname] as $existingkey => $existingvalue) { 1558 $oldvaluelength = strlen(trim($existingvalue)); 1559 if (($newvaluelength <= $oldvaluelength) && (substr($existingvalue, 0, $newvaluelength) == trim($value))) { 1560 // new value is identical but shorter-than (or equal-length to) one already in comments - skip 1561 break 2; 1562 } 1563 } 1564 if (function_exists('mb_convert_encoding')) { 1565 if (trim($value) == trim(substr(mb_convert_encoding($existingvalue, $ThisFileInfo['id3v1']['encoding'], $ThisFileInfo['encoding']), 0, 30))) { 1566 // value stored in ID3v1 appears to be probably the multibyte value transliterated (badly) into ISO-8859-1 in ID3v1. 1567 // As an example, Foobar2000 will do this if you tag a file with Chinese or Arabic or Cyrillic or something that doesn't fit into ISO-8859-1 the ID3v1 will consist of mostly "?" characters, one per multibyte unrepresentable character 1568 break 2; 1569 } 1570 } 1571 1572 } elseif (!is_array($value)) { 1573 1574 $newvaluelength = strlen(trim($value)); 1575 foreach ($ThisFileInfo['comments'][$tagname] as $existingkey => $existingvalue) { 1576 $oldvaluelength = strlen(trim($existingvalue)); 1577 if ((strlen($existingvalue) > 10) && ($newvaluelength > $oldvaluelength) && (substr(trim($value), 0, strlen($existingvalue)) == $existingvalue)) { 1578 $ThisFileInfo['comments'][$tagname][$existingkey] = trim($value); 1579 break; 1580 } 1581 } 1582 1583 } 1584 if (is_array($value) || empty($ThisFileInfo['comments'][$tagname]) || !in_array(trim($value), $ThisFileInfo['comments'][$tagname])) { 1585 $value = (is_string($value) ? trim($value) : $value); 1586 if (!is_int($key) && !ctype_digit($key)) { 1587 $ThisFileInfo['comments'][$tagname][$key] = $value; 1588 } else { 1589 if (!isset($ThisFileInfo['comments'][$tagname])) { 1590 $ThisFileInfo['comments'][$tagname] = array($value); 1591 } else { 1592 $ThisFileInfo['comments'][$tagname][] = $value; 1593 } 1594 } 1595 } 1596 } 1597 } 1598 } 1599 } 1600 1601 // attempt to standardize spelling of returned keys 1602 $StandardizeFieldNames = array( 1603 'tracknumber' => 'track_number', 1604 'track' => 'track_number', 1605 ); 1606 foreach ($StandardizeFieldNames as $badkey => $goodkey) { 1607 if (array_key_exists($badkey, $ThisFileInfo['comments']) && !array_key_exists($goodkey, $ThisFileInfo['comments'])) { 1608 $ThisFileInfo['comments'][$goodkey] = $ThisFileInfo['comments'][$badkey]; 1609 unset($ThisFileInfo['comments'][$badkey]); 1610 } 1611 } 1612 1613 if ($option_tags_html) { 1614 // Copy ['comments'] to ['comments_html'] 1615 if (!empty($ThisFileInfo['comments'])) { 1616 foreach ($ThisFileInfo['comments'] as $field => $values) { 1617 if ($field == 'picture') { 1618 // pictures can take up a lot of space, and we don't need multiple copies of them 1619 // let there be a single copy in [comments][picture], and not elsewhere 1620 continue; 1621 } 1622 foreach ($values as $index => $value) { 1623 if (is_array($value)) { 1624 $ThisFileInfo['comments_html'][$field][$index] = $value; 1625 } else { 1626 $ThisFileInfo['comments_html'][$field][$index] = str_replace('�', '', self::MultiByteCharString2HTML($value, $ThisFileInfo['encoding'])); 1627 } 1628 } 1629 } 1630 } 1631 } 1632 1633 } 1634 return true; 1635 } 1636 1637 /** 1638 * @param string $key 1639 * @param int $begin 1640 * @param int $end 1641 * @param string $file 1642 * @param string $name 1643 * 1644 * @return string 1645 */ 1646 public static function EmbeddedLookup($key, $begin, $end, $file, $name) { 1647 1648 // Cached 1649 static $cache; 1650 if (isset($cache[$file][$name])) { 1651 return (isset($cache[$file][$name][$key]) ? $cache[$file][$name][$key] : ''); 1652 } 1653 1654 // Init 1655 $keylength = strlen($key); 1656 $line_count = $end - $begin - 7; 1657 1658 // Open php file 1659 $fp = fopen($file, 'r'); 1660 1661 // Discard $begin lines 1662 for ($i = 0; $i < ($begin + 3); $i++) { 1663 fgets($fp, 1024); 1664 } 1665 1666 // Loop thru line 1667 while (0 < $line_count--) { 1668 1669 // Read line 1670 $line = ltrim(fgets($fp, 1024), "\t "); 1671 1672 // METHOD A: only cache the matching key - less memory but slower on next lookup of not-previously-looked-up key 1673 //$keycheck = substr($line, 0, $keylength); 1674 //if ($key == $keycheck) { 1675 // $cache[$file][$name][$keycheck] = substr($line, $keylength + 1); 1676 // break; 1677 //} 1678 1679 // METHOD B: cache all keys in this lookup - more memory but faster on next lookup of not-previously-looked-up key 1680 //$cache[$file][$name][substr($line, 0, $keylength)] = trim(substr($line, $keylength + 1)); 1681 $explodedLine = explode("\t", $line, 2); 1682 $ThisKey = (isset($explodedLine[0]) ? $explodedLine[0] : ''); 1683 $ThisValue = (isset($explodedLine[1]) ? $explodedLine[1] : ''); 1684 $cache[$file][$name][$ThisKey] = trim($ThisValue); 1685 } 1686 1687 // Close and return 1688 fclose($fp); 1689 return (isset($cache[$file][$name][$key]) ? $cache[$file][$name][$key] : ''); 1690 } 1691 1692 /** 1693 * @param string $filename 1694 * @param string $sourcefile 1695 * @param bool $DieOnFailure 1696 * 1697 * @return bool 1698 * @throws Exception 1699 */ 1700 public static function IncludeDependency($filename, $sourcefile, $DieOnFailure=false) { 1701 global $GETID3_ERRORARRAY; 1702 1703 if (file_exists($filename)) { 1704 if (include_once($filename)) { 1705 return true; 1706 } else { 1707 $diemessage = basename($sourcefile).' depends on '.$filename.', which has errors'; 1708 } 1709 } else { 1710 $diemessage = basename($sourcefile).' depends on '.$filename.', which is missing'; 1711 } 1712 if ($DieOnFailure) { 1713 throw new Exception($diemessage); 1714 } else { 1715 $GETID3_ERRORARRAY[] = $diemessage; 1716 } 1717 return false; 1718 } 1719 1720 /** 1721 * @param string $string 1722 * 1723 * @return string 1724 */ 1725 public static function trimNullByte($string) { 1726 return trim($string, "\x00"); 1727 } 1728 1729 /** 1730 * @param string $path 1731 * 1732 * @return float|bool 1733 */ 1734 public static function getFileSizeSyscall($path) { 1735 $filesize = false; 1736 1737 if (GETID3_OS_ISWINDOWS) { 1738 if (class_exists('COM')) { // From PHP 5.3.15 and 5.4.5, COM and DOTNET is no longer built into the php core.you have to add COM support in php.ini: 1739 $filesystem = new COM('Scripting.FileSystemObject'); 1740 $file = $filesystem->GetFile($path); 1741 $filesize = $file->Size(); 1742 unset($filesystem, $file); 1743 } else { 1744 $commandline = 'for %I in ('.escapeshellarg($path).') do @echo %~zI'; 1745 } 1746 } else { 1747 $commandline = 'ls -l '.escapeshellarg($path).' | awk \'{print $5}\''; 1748 } 1749 if (isset($commandline)) { 1750 $output = trim(`$commandline`); 1751 if (ctype_digit($output)) { 1752 $filesize = (float) $output; 1753 } 1754 } 1755 return $filesize; 1756 } 1757 1758 /** 1759 * @param string $filename 1760 * 1761 * @return string|false 1762 */ 1763 public static function truepath($filename) { 1764 // 2017-11-08: this could use some improvement, patches welcome 1765 if (preg_match('#^(\\\\\\\\|//)[a-z0-9]#i', $filename, $matches)) { 1766 // PHP's built-in realpath function does not work on UNC Windows shares 1767 $goodpath = array(); 1768 foreach (explode('/', str_replace('\\', '/', $filename)) as $part) { 1769 if ($part == '.') { 1770 continue; 1771 } 1772 if ($part == '..') { 1773 if (count($goodpath)) { 1774 array_pop($goodpath); 1775 } else { 1776 // cannot step above this level, already at top level 1777 return false; 1778 } 1779 } else { 1780 $goodpath[] = $part; 1781 } 1782 } 1783 return implode(DIRECTORY_SEPARATOR, $goodpath); 1784 } 1785 return realpath($filename); 1786 } 1787 1788 /** 1789 * Workaround for Bug #37268 (https://bugs.php.net/bug.php?id=37268) 1790 * 1791 * @param string $path A path. 1792 * @param string $suffix If the name component ends in suffix this will also be cut off. 1793 * 1794 * @return string 1795 */ 1796 public static function mb_basename($path, $suffix = null) { 1797 $splited = preg_split('#/#', rtrim($path, '/ ')); 1798 return substr(basename('X'.$splited[count($splited) - 1], $suffix), 1); 1799 } 1800 1801 }
title
Description
Body
title
Description
Body
title
Description
Body
title
Body
| Generated: Sat Jul 4 01:00:03 2020 | Cross-referenced by PHPXref 0.7.1 |