Function to walk through a multidimensional array and remove any successive duplicates based on an index

strip_duplicate_array.php

<?php
  //  Function to walk through a multidimensional array and remove any successive duplicates based on an index
  function stripDuplicateHeader(&$stripArray, $index){  // Pass a reference of the array to be processed and the index to check
    $newArr = array(); // Create an array in which to populate the processed arrays
    foreach (array_reverse($stripArray) as $val) {  // walk through the array to be processed backwards
      $newArr[$val[$index]] = $val;  //populate
    }
    $stripArray = array_reverse(array_values($newArr)); // remove duplicates
    return $stripArray; //  Return array
  }

  // Call function to strip duplicate headers
  $header = stripDuplicateHeader($header, 'field');
  //var_dump($header);
?>