3v4l.org

run code in 300+ PHP versions simultaneously
<?php $assoc_arr = array("second" => array( array("position" => 4, "content" => "Valiant"), array("position" => 5, "content" => "Hail") ), "first" => array( array("position" => 0, "content" => "Hail"), array("position" => 3, "content" => "Victors"), array("position" => 2, "content" => "the"), array("position" => 1, "content" => "to") ) ); $order = array('first','second'); $arr = array(); foreach($order as $ord) { if(isset($assoc_arr[$ord])) { $arr = array_merge($arr, $assoc_arr[$ord]); } }
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, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 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
preferences:
215.31 ms | 406 KiB | 314 Q