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? ??? ?? PHP ???? ?? ??? ???? ?? PHP?? 2GB?? ? ??? ?? ??? ???? ??? ??????

?? ??? ???? ?? PHP?? 2GB?? ? ??? ?? ??? ???? ??? ??????

Oct 21, 2024 pm 04:49 PM

How to Determine File Size of Files Larger Than 2 GB in PHP Without Using External Tools?

?? ?? ???? > ?? ???? ?? PHP? 2GB ??

filesize(), stat() ? fseek()? ?? ?? ??? ???? ?? ??? 2GB? ???? ?? ??? ???? ???? ????. GB. ??? ?? ?? ????? Big File Tools? ???? ?? ??? ???? PHP 32?? ??? ?? ?????.

Big File Tools: ???? ???

Big File ???? 2GB?? ? ??? ???? ?? ??? ??? ??? ??? ?????. ? ??? ???? ?????? ??? ???? ? ??? ????? ???? ??? ?? ??? ?????. ? ??? ??? ? ?? ??????? Windows COM? ????? filesize()? ?????.

??? ??

?? PHP ??? Big? ???? ??? ?????. ?? ?? ???:

<code class="php">/*
 * This software may be modified and distributed under the terms
 * of the MIT license.
 */

function filesize64($file)
{
    static $iswin;
    if (!isset($iswin)) {
        $iswin = (strtoupper(substr(PHP_OS, 0, 3)) == 'WIN');
    }

    static $exec_works;
    if (!isset($exec_works)) {
        $exec_works = (function_exists('exec') &amp;&amp; !ini_get('safe_mode') &amp;&amp; @exec('echo EXEC') == 'EXEC');
    }

    // try a shell command
    if ($exec_works) {
        $cmd = ($iswin) ? "for %F in (\"$file\") do @echo %~zF" : "stat -c%s \"$file\"";
        @exec($cmd, $output);
        if (is_array($output) &amp;&amp; ctype_digit($size = trim(implode("\n", $output)))) {
            return $size;
        }
    }

    // try the Windows COM interface
    if ($iswin &amp;&amp; class_exists("COM")) {
        try {
            $fsobj = new COM('Scripting.FileSystemObject');
            $f = $fsobj->GetFile( realpath($file) );
            $size = $f->Size;
        } catch (Exception $e) {
            $size = null;
        }
        if (ctype_digit($size)) {
            return $size;
        }
    }

    // if all else fails
    return filesize($file);
}</code>

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