3v4l.org

run code in 300+ PHP versions simultaneously
<?php if (!preg_match("^[a-zA-Z0-9.-_]+\@[a-zA-Z0-9.-_]\+.[a-zA-Z0-9.-_]+$",$email)); die ("Not a valid email format!"); }
Output for 5.3.0 - 5.3.27, 5.4.0 - 5.4.17
Parse error: syntax error, unexpected '}' in /in/D5Ds4 on line 6
Process exited with code 255.
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181.58 ms | 1399 KiB | 53 Q