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<?php $a = ['first','second','third']; // touch refcount $b = &$a; foreach($a as $v) { echo 'Running ', $v, "\n\n"; unset($a[1]); var_dump($a); var_dump($b); } echo 'final:', "\n"; var_dump($a);
Output for git.master, git.master_jit, rfc.property-hooks
Running first array(2) { [0]=> string(5) "first" [2]=> string(5) "third" } array(2) { [0]=> string(5) "first" [2]=> string(5) "third" } Running second array(2) { [0]=> string(5) "first" [2]=> string(5) "third" } array(2) { [0]=> string(5) "first" [2]=> string(5) "third" } Running third array(2) { [0]=> string(5) "first" [2]=> string(5) "third" } array(2) { [0]=> string(5) "first" [2]=> string(5) "third" } final: array(2) { [0]=> string(5) "first" [2]=> string(5) "third" }

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