--TEST--
Bug #31720 (Invalid object callbacks not caught in array_walk())
--FILE--
<?php
$array = array('at least one element');
array_walk($array, array($nonesuchvar,'show'));
?>
===DONE===
--EXPECTF--
Notice: Undefined variable: nonesuchvar in %s on line %d
Warning: array_walk() expects parameter 2 to be a valid callback, first array member is not a valid class name or object in %s on line %d
===DONE===
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