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<?php $xs = array('y'); $ys = array(); foreach ($xs as $idX => $elemX) {} var_dump($idX, $elemX); foreach ($ys as $idY => $elemY) {} var_dump($idY, $elemY);
Output for git.master, git.master_jit, rfc.property-hooks
int(0) string(1) "y" Warning: Undefined variable $idY in /in/0cMDH on line 10 Warning: Undefined variable $elemY in /in/0cMDH on line 10 NULL NULL

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