simple php logging

saveLog.php

function saveLog( $data )
{
    $logname = date("Ymd") . ".log.txt";
    $handle  = fopen($logname, "a+");

    if ($handle !== false) {
        fwrite($handle, $data . PHP_EOL);
        fclose($handle);
    } else {
        throw new Exception("saveLog fopen error");
    }
}