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run code in 300+ PHP versions simultaneously
<?php $ar = array(1=>"cat", 3=>"dog"); for($i=0; $i<sizeof($ar); $i++){ echo $ar[$i]; }
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined array key 0 in /in/guFIY on line 5 cat

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