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<?php $list = array("thing one", "thing two", "thing three"); echo implode(', ', array_walk($list, function($v, $k) { return $k + 1 . ". $v"; })));
Output for 5.3.0 - 5.3.28, 5.4.0 - 5.4.28
Parse error: syntax error, unexpected ')', expecting ',' or ';' in /in/JX26o on line 4
Process exited with code 255.
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181.99 ms | 1399 KiB | 65 Q