3v4l.org

run code in 300+ PHP versions simultaneously
<?php function abc?($abc) { return $abc; } echo abc?('test');
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.6
Parse error: syntax error, unexpected '?', expecting '(' in /in/a7BZq on line 3
Process exited with code 255.
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170.18 ms | 1395 KiB | 35 Q