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run code in 300+ PHP versions simultaneously
<?php $data = [ 0 => [7 => 'foo', 13 => 'foo'], 1 => [2 => 'foo', 25 => 'foo'], 4 => [24 => 'foo'], ]; $data = array_combine(array_map(function ($key) { return ++$key; }, array_keys($data)), $data); array_walk($data, function(&$data) { $data = array_combine(array_map(function ($key) { return ++$key; }, array_keys($data)), $data); }); var_dump($data);
Output for 5.6.0 - 5.6.40, 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 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
array(3) { [1]=> array(2) { [8]=> string(3) "foo" [14]=> string(3) "foo" } [2]=> array(2) { [3]=> string(3) "foo" [26]=> string(3) "foo" } [5]=> array(1) { [25]=> string(3) "foo" } }
preferences:
114.87 ms | 2061 KiB | 4 Q