PHP：讀取檔案

$filename = 'test.txt';
$handle   = fopen($filename, "r");
$contents = '';
if($handle)
{
    //fread 一次讀整個檔案
    $contents = fread($handle, filesize($filename));

    //fgets 一次讀一行
    while (!feof($handle)) $contents .= fgets($handle, 4096);

    echo $contents;
    fclose($handle);
}