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run code in 300+ PHP versions simultaneously
<?php $arr = array(); $arr[1] = array('p' => 3, 'id' => 4); $arr[2] = array('p' => 2, 'id' => 3); $arr[3] = array('p' => 1, 'id' => 2); $arr[4] = array('p' => 0, 'id' => 1); print_r($arr);

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44.13 ms | 402 KiB | 5 Q