3v4l.org

run code in 300+ PHP versions simultaneously
<?php $username = "test"; $password = ""; $authString = $username . " " . md5($password); $file = "test\n"; echo $authString; if (strpos($file, $authString) !== FALSE ){ echo "LOGIN SUCCESS"; } else { echo 'INCORRECT CREDENTIALS. TRY AGAIN'; }
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
test d41d8cd98f00b204e9800998ecf8427eINCORRECT CREDENTIALS. TRY AGAIN
preferences:
288.94 ms | 406 KiB | 459 Q