PHPはアップロードした画像をチェックして、画像の本当のタイプを返します【拡張子】
2827 ワード
$file = @fopen(' ', "rb");
$bin = fread($file, 15); // 15 , 。
$flag = get_type_list($bin);
if(!empty($flag)) {
echo $flag;
}
else{
echo ' ';
}
/**
* *
* author wengxianhu
* @param $bin string
* @return boolean
*/
public function get_type_list($bin)
{
$flag = '';
$array = array(
array("FFD8FFE1","jpg"),
array("89504E47","png"),
array("47494638","gif"),
array("FFD8FFE000104A46", "jpeg")
// array("49492A00","tif"),
// array("424D","bmp"),
// array("41433130","dwg"),
// array("38425053","psd"),
// array("7B5C727466","rtf"),
// array("3C3F786D6C","xml"),
// array("68746D6C3E","html"),
// array("44656C69766572792D646174","eml"),
// array("CFAD12FEC5FD746F","dbx"),
// array("2142444E","pst"),
// array("D0CF11E0","xls/doc"),
// array("5374616E64617264204A","mdb"),
// array("FF575043","wpd"),
// array("252150532D41646F6265","eps/ps"),
// array("255044462D312E","pdf"),
// array("E3828596","pwl"),
// array("504B0304","zip"),
// array("52617221","rar"),
// array("57415645","wav"),
// array("41564920","avi"),
// array("2E7261FD","ram"),
// array("2E524D46","rm"),
// array("000001BA","mpg"),
// array("000001B3","mpg"),
// array("6D6F6F76","mov"),
// array("3026B2758E66CF11","asf"),
// array("4D546864","mid"),
// array("D3C3BBA7", 'csv')
);
foreach ($array as $v)
{
$blen = strlen(pack("H*", $v[0])); //
$tbin = substr($bin, 0, intval($blen)); ///
if(strtolower($v[0]) == strtolower(array_shift(unpack("H*", $tbin))))
{
$flag = $v[1];
break;
}
}
return $flag;
}