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<?php $a = ['foo','bar','baz']; // touch refcount $b = &$a; foreach($a as $k => $v) { unset($a[$k]); var_dump($a); } echo 'final:', "\n"; var_dump($a);
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
array(2) { [1]=> string(3) "bar" [2]=> string(3) "baz" } array(1) { [2]=> string(3) "baz" } array(0) { } final: array(0) { }
preferences:
236.13 ms | 404 KiB | 332 Q