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run code in 300+ PHP versions simultaneously
<?php echo phpversion() . "\n\n"; /* function foo($func) { $func("Johnny", 2, 3, 4); } $mfunc = function ($a, $b, $c, $d) { echo "Hello, $a"; } foo($mfunc); //*/ ?>

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31.35 ms | 402 KiB | 5 Q