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? ??? ?? PHP ???? PHP?? ??? ??? ??? ???? ??? ??????

PHP?? ??? ??? ??? ???? ??? ??????

Nov 14, 2024 pm 12:19 PM

How to Determine the Content Type of a File in PHP?

PHP?? ?? ??? ??? ???? ??

?? ??? ??? ???? ?? ? ??? ??? Content-Type ??? ???? ?? ?????. ???? ??? ??? ?????? ???? ?? ?? ??? ?????. PHP??? file_get_contents() ??? ???? ?? ??? ???? ??? ? ??? ??? ??? ????? ?? ??? ?????.

getFileMimeType() ??

? ??? ?????? ?? getFileMimeType() ??? ???? ?? ????.

function getFileMimeType($file) {
    if (function_exists('finfo_file')) {
        $finfo = finfo_open(FILEINFO_MIME_TYPE);
        $type = finfo_file($finfo, $file);
        finfo_close($finfo);
    } else {
        require_once 'upgradephp/ext/mime.php';
        $type = mime_content_type($file);
    }

    if (!$type || in_array($type, array('application/octet-stream', 'text/plain'))) {
        $secondOpinion = exec('file -b --mime-type ' . escapeshellarg($file), $foo, $returnCode);
        if ($returnCode === 0 && $secondOpinion) {
            $type = $secondOpinion;
        }
    }

    if (!$type || in_array($type, array('application/octet-stream', 'text/plain'))) {
        require_once 'upgradephp/ext/mime.php';
        $exifImageType = exif_imagetype($file);
        if ($exifImageType !== false) {
            $type = image_type_to_mime_type($exifImageType);
        }
    }

    return $type;
}

?? ??

? ??? ??? ??? ???? ?? ?? ?? ??? ?????.

  1. finfo_file(): ?? ??? ?? PHP finfo ??? ?????.
  2. mime_content_type(): mime_content_type?? ?????. () finfo? ??? ? ?? ?? ??.
  3. file ??: ? ??? ???? MIME ?? ??? ?? OS? ?? ??? ????? ?????.
  4. exif_imagetype(): ??? ???? EXIF_imagetype()? ???? ???? MIME ??? ?????.

??? ??? ???? ???? ? ??? ??? ??? ?????. ??? ?? ??? ??? ??? ?????.

? ??? PHP?? ??? ??? ??? ???? ??? ??????? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!

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Video Face Swap

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