<?php
function ic_mime_type ($file) {
if (!file_exists($file)) {
return ('application/x-object');
}
if(!isset($mimeData)) {
$mimeFile = array (
'0 string PK\003\004 application/x-zip',
'0 string Rar! application/x-rar',
'257 string ustar\0 application/x-tar posix',
'257 string ustar\040\040\0 application/x-tar gnu',
'0 string GIF image/gif',
'0 beshort 0xffd8 image/jpeg',
'0 string \137PNG image/png',
'>30 string Copyright\ 1989-1990\ PKWARE\ Inc. application/x-zip',
'>30 string PKLITE\ Copr. application/x-zip',
);
foreach($mimeFile as $mimeLine) {
if($mimeLine[0] != '#' && trim($mimeLine)) {
if(preg_match('/^(\S+?)\s+(\S+?)\s+(\S+)(\s+(.+?))?$/si', $mimeLine, $regex_mimeDataSet)) {
$mimeDataSet['offset'] = str_replace('>', '', $regex_mimeDataSet[1]);
$indicator = $regex_mimeDataSet[3];
switch($regex_mimeDataSet[2]) {
case 'string':
$indicator = str_replace('\ ', ' ', $indicator);
$indicator = str_replace('\<', '<', $indicator);
$indicator = str_replace('\>', '>', $indicator);
$indicator = str_replace('\r', "\r", $indicator);
$indicator = str_replace('\n', "\n", $indicator);
$indicator = preg_replace('/\\\\([0-9]{3})/e', 'chr($1);', $indicator);
break;
case 'byte':
$indicator = pack('c', @eval('return '.$indicator.';'));
break;
case 'short':
$indicator = pack('s', @eval('return '.$indicator.';'));
break;
case 'beshort':
$indicator = pack('n', @eval('return '.$indicator.';'));
break;
case 'leshort':
$indicator = pack('v', @eval('return '.$indicator.';'));
break;
case 'belong':
$indicator = pack('N', @eval('return '.$indicator.';'));
break;
case 'lelong':
$indicator = pack('V', @eval('return '.$indicator.';'));
break;
case 'long':
$indicator = pack('l', @eval('return '.$indicator.';'));
break;
}
$mimeDataSet['indicator'] = $indicator;
$mimeDataSet['mime'] = str_replace("\r", '', $regex_mimeDataSet[5]);
$mimeData[] = $mimeDataSet;
}
}
}
}
$o = fopen ($file, "r");
$file_content = fgets($o, 4096);
fclose($o);
$retVal = 'application/x-object'; foreach($mimeData as $key => $mimeTest) {
$testStr = substr($file_content, $mimeTest['offset'],
strlen($mimeTest['indicator'])); if($testStr == $mimeTest['indicator']) {
$mimeType = $mimeTest['mime']; if($mimeType == '') { while($mimeType == '') {
$mimeType = $mimeData[++$key]['mime']; } } $retVal = $mimeType; } } return
$retVal; }
?>
Zitat
