3v4l.org

run code in 300+ PHP versions simultaneously
<?php $single_Array = array(); //example array $array = array( array('t1' => 'test1'), array('t2' => 'test2'), array('t3' => 'test3'), array('t4' => 'test4'), array('t5' => 'test5')); $size = sizeof($array); //loop to fill the new single-dimensional array for($count = 0; $count<sizeof($array);$count++) { //take the key of multi-dim array $second_cell = key($array[$count]); //set the value into the new array $single_array[$count] = $array[$count][$second_cell]; } //see the results var_dump($single_array); ?>
based on 3i251
Output for 5.6.0 - 5.6.29, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.28, 7.4.0 - 7.4.16, 8.0.0 - 8.0.3
array(5) { [0]=> string(5) "test1" [1]=> string(5) "test2" [2]=> string(5) "test3" [3]=> string(5) "test4" [4]=> string(5) "test5" }