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<?php | |
/* | |
* @param string $filename Path from windows executable | |
* @param string $encoding You need single-byte-character output, use ISO-8859-1 | |
* @param int $limit increase limit if you tried read a big file and it returns NULL | |
* @return null|array | |
*/ | |
function getFileVersionInfo($filename, $encoding = 'UTF-8', $limit = 15728640) | |
{ | |
$res = null; | |
$data = file_get_contents($filename, false, null, 0, $limit); | |
if (!$data) { //Read error return NULL | |
return $res; | |
} | |
if ($pos = strpos($data, mb_convert_encoding('VS_VERSION_INFO', 'UTF-16LE'))) { | |
$pos -= 6; | |
$six = unpack('v*', substr($data, $pos, 6)); | |
$data = substr($data, $pos, $six[1]); | |
if ($pos = strpos($data, mb_convert_encoding('StringFileInfo', 'UTF-16LE'))) { | |
$pos += 54; | |
$res = []; | |
$six = unpack('v*', substr($data, $pos, 6)); | |
$nuls = "\0\0\0"; | |
while ($six[2]) { | |
$nul = strpos($data, $nuls, $pos+6)+1; | |
$key = mb_convert_encoding(substr($data, $pos+6, $nul-$pos-6), $encoding, 'UTF-16LE'); | |
$val = mb_convert_encoding(substr($data, ceil(($nul+2)/4)*4, $six[2]*2-2), $encoding, 'UTF-16LE'); | |
$res[$key] = $val; | |
$pos+= ceil($six[1]/4)*4; | |
$six = unpack('v*', substr($data, $pos, 6)); | |
} | |
} | |
} | |
$data = null; //"helps" free memory | |
return $res; | |
} |
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