3v4l.org

run code in 300+ PHP versions simultaneously
<?php $email = 'test@io'; $host = substr($email, strpos($email, '0)); var_dump((substr_count($email, '@') === 1) && (checkdnsrr($host)) || checkdnsrr($host, 'A')));
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.35
Parse error: syntax error, unexpected '@' in /in/kBoSJ on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '@' in /in/kBoSJ on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/kBoSJ on line 4
Process exited with code 255.

preferences:
217.14 ms | 1395 KiB | 125 Q