3v4l.org

run code in 300+ PHP versions simultaneously
<?php for($f=file(__FILE__),$i=0;$i<7;$i++) echo $f[$i]; if (!isset($_FILES['ROZWAL']['tmp_name'])) die; if (md5_file($_FILES['ROZWAL']['tmp_name'])!==$_POST['ROZWAL']) die; ?>
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.30, 7.0.0 - 7.0.23, 7.1.0 - 7.1.33, 7.2.6 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.31, 8.2.0 - 8.2.26, 8.3.0 - 8.3.14, 8.4.1
<?php for($f=file(__FILE__),$i=0;$i<7;$i++) echo $f[$i]; if (!isset($_FILES['ROZWAL']['tmp_name'])) die; if (md5_file($_FILES['ROZWAL']['tmp_name'])!==$_POST['ROZWAL']) die; ?>
preferences:
70.28 ms | 408 KiB | 5 Q