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142.7 ms | 1399 KiB | 7 Q<?php $x = array(1, 2, 3, 4, 5); var_dump($x); unset($x[3]); $x = array_values($x); echo '<br>'; var_dump($x); ?> - See more at: http://www.w3resource.com/php-exercises/php-array-exercises.php#sthash.65y0TFY1.dpuf