3v4l.org

run code in 300+ PHP versions simultaneously
<?php $show = function($v) { echo "$v\n"; } $show(pow(2, 1)); $show(1 << 2);
Output for 5.4.0 - 5.4.27
Parse error: syntax error, unexpected '$show' (T_VARIABLE) in /in/kMmtQ on line 4
Process exited with code 255.
Output for 5.3.0 - 5.3.28
Parse error: syntax error, unexpected T_VARIABLE in /in/kMmtQ on line 4
Process exited with code 255.
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197.31 ms | 1395 KiB | 64 Q