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<?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); ?>

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