3v4l.org

run code in 300+ PHP versions simultaneously
<?php foo(false) function foo($x) { return $x === $x(); }
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.7
Parse error: syntax error, unexpected 'function' (T_FUNCTION) in /in/tK1FV on line 4
Process exited with code 255.
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177.74 ms | 1395 KiB | 36 Q