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run code in 300+ PHP versions simultaneously
<?php function x(){ //some loooong calculation return 42; } for($n = 0;$n < 100; $n++ ){ $x = x(); echo $x; }
Output for git.master, git.master_jit, rfc.property-hooks
42424242424242424242424242424242424242424242424242424242424242424242424242424242424242424242424242424242424242424242424242424242424242424242424242424242424242424242424242424242424242424242424242424242

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