대용량 파일에 file_get_contents()를 사용할 때 메모리 고갈 오류를 방지하는 방법은 무엇입니까?

<code class="php">function file_get_contents_chunked($file, $chunk_size, $callback)
{
    try {
        $handle = fopen($file, "r");
        $i = 0;
        while (!feof($handle)) {
            call_user_func_array($callback, array(fread($handle, $chunk_size), &$handle, $i));
            $i++;
        }
    } catch (Exception $e) {
        trigger_error("file_get_contents_chunked::" . $e->getMessage(), E_USER_NOTICE);
        return false;
    }
    fclose($handle);

    return true;
}</code>

<code class="php">$success = file_get_contents_chunked("my/large/file", 4096, function ($chunk, &$handle, $iteration) {
    /* Process the chunk here... */
});</code>

<code class="php">$newData = str_replace("^M", "", $myData);</code>

<code class="php">$pattern = '/\r\n/';
$replacement = '';
$newData = preg_replace($pattern, $replacement, $myData);</code>