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<?php $a = array(1,2,3); foreach($a as $i => $v) { echo "$i => $v\n"; if (isset($a[$i+1])) { $a[$i+1] += 1; } } var_dump($a);
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 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 - 8.2.18, 8.3.0 - 8.3.6
0 => 1 1 => 2 2 => 3 array(3) { [0]=> int(1) [1]=> int(3) [2]=> int(4) }
preferences:
186.41 ms | 404 KiB | 197 Q