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run code in 300+ PHP versions simultaneously
<?php function tst () { echo "!"; return array(1,2,3,4,5); } foreach ($tst as $v) { echo $v; }
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined variable $tst in /in/b163V on line 8 Warning: foreach() argument must be of type array|object, null given in /in/b163V on line 8

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