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<?php $a = array(); $a[] = 1; $a[] = 2; $a[] = 3; $a[] = 4; $a[] = 5; $a[] = 6; unset($a[1]); var_dump($a);
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
array(5) { [0]=> int(1) [2]=> int(3) [3]=> int(4) [4]=> int(5) [5]=> int(6) }