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<?php $arr = array(1,2,3,4,5,6,7,8,9); foreach($arr as $key=>$value) { var_dump($arr); unset($arr[$key + 1]); echo $value . "\n"; echo "key=" . $key . ", value=" . $value . ", key+1=" . ($key+1) . "\n\n"; var_dump($arr); } echo("last:"); var_dump($arr);
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 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
array(9) { [0]=> int(1) [1]=> int(2) [2]=> int(3) [3]=> int(4) [4]=> int(5) [5]=> int(6) [6]=> int(7) [7]=> int(8) [8]=> int(9) } 1 key=0, value=1, key+1=1 array(8) { [0]=> int(1) [2]=> int(3) [3]=> int(4) [4]=> int(5) [5]=> int(6) [6]=> int(7) [7]=> int(8) [8]=> int(9) } array(8) { [0]=> int(1) [2]=> int(3) [3]=> int(4) [4]=> int(5) [5]=> int(6) [6]=> int(7) [7]=> int(8) [8]=> int(9) } 2 key=1, value=2, key+1=2 array(7) { [0]=> int(1) [3]=> int(4) [4]=> int(5) [5]=> int(6) [6]=> int(7) [7]=> int(8) [8]=> int(9) } array(7) { [0]=> int(1) [3]=> int(4) [4]=> int(5) [5]=> int(6) [6]=> int(7) [7]=> int(8) [8]=> int(9) } 3 key=2, value=3, key+1=3 array(6) { [0]=> int(1) [4]=> int(5) [5]=> int(6) [6]=> int(7) [7]=> int(8) [8]=> int(9) } array(6) { [0]=> int(1) [4]=> int(5) [5]=> int(6) [6]=> int(7) [7]=> int(8) [8]=> int(9) } 4 key=3, value=4, key+1=4 array(5) { [0]=> int(1) [5]=> int(6) [6]=> int(7) [7]=> int(8) [8]=> int(9) } array(5) { [0]=> int(1) [5]=> int(6) [6]=> int(7) [7]=> int(8) [8]=> int(9) } 5 key=4, value=5, key+1=5 array(4) { [0]=> int(1) [6]=> int(7) [7]=> int(8) [8]=> int(9) } array(4) { [0]=> int(1) [6]=> int(7) [7]=> int(8) [8]=> int(9) } 6 key=5, value=6, key+1=6 array(3) { [0]=> int(1) [7]=> int(8) [8]=> int(9) } array(3) { [0]=> int(1) [7]=> int(8) [8]=> int(9) } 7 key=6, value=7, key+1=7 array(2) { [0]=> int(1) [8]=> int(9) } array(2) { [0]=> int(1) [8]=> int(9) } 8 key=7, value=8, key+1=8 array(1) { [0]=> int(1) } array(1) { [0]=> int(1) } 9 key=8, value=9, key+1=9 array(1) { [0]=> int(1) } last:array(1) { [0]=> int(1) }

preferences:
199.82 ms | 409 KiB | 328 Q