php檔案類型檢測:根據二進位檔案頭判斷檔案類型的函數

$files = array('./test.jpg', 'test.png'); $fileTypes = array( 7790 => 'exe', 7784 => 'midi', 8075 => 'zip', 8297 => 'rar', 225216 => 'jpg', 7173 => 'gif', 6677 => 'bmp', 13780 => 'png', ); foreach($files as $file) { $fp = fopen($file, 'rb'); $bin = fread($fp, 2); // 唯讀頭兩個位元組 fclose($fp); $strInfo = @unpack("C2chars", $bin); $typeCode = intval($strInfo['chars1'].$strInfo['chars2']); $fileType = isset($fileTypes[$typeCode]) ? $fileTypes[$typeCode] : 'unknown'; echo $file , ' type : ', $fileType, ' code : ', $fileType, ' '; } 複製代碼

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