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run code in 300+ PHP versions simultaneously
<?php function x($a, &$b, &$c = 3) { $c++; echo $a, $b, $c; } $z = 2; $y = null; x(1, $z, $y); x(1, $z); x(1, $z); x(1, $z);
Output for git.master, git.master_jit, rfc.property-hooks
121124124124

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