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<?php $a = array(1,2,3); $b=&$a; foreach($a as $k=>$v) { echo "$v\n"; unset($a[2]); } var_dump($b);
Output for 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 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
1 2 3 array(2) { [0]=> int(1) [1]=> int(2) }
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
1 2 array(2) { [0]=> int(1) [1]=> int(2) }

preferences:
222.4 ms | 401 KiB | 331 Q