Convert an associative array to a simple array of its values in php

create a new array, use a foreach loop in PHP to copy all the values from associative array into a simple array

      $data=Array(); //associative array

      $simple_array = array(); //simple array

      foreach($data as $d)
      {
            $simple_array[]=$d['value_name'];   
      }

simply use array_values function:

$array = array_values($array);

You should use the array_values() function.