3v4l.org

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<?php $x = array(0 => 1, 2 => 3, 4 => 5, 6 => 7, 8 => 9); foreach (array_keys($x) as $key => $value) { echo $key . "->". $value."\n"; } echo next($x)."\n"; echo next($x)."\n"; $y = $x; echo next($y)."\n"; echo next($y)."\n"; reset($y); echo next($x)."\n"; echo next($y)."\n";
Output for 7.0.15 - 7.0.20, 7.1.1 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
0->0 1->2 2->4 3->6 4->8 3 5 7 9 7 3
Output for 7.0.0 - 7.0.14, 7.1.0
0->0 1->2 2->4 3->6 4->8 3 5 3 5 7 3

preferences:
160.11 ms | 402 KiB | 174 Q