[PHP] - Distinct double in a multi dimensional array

gistfile1.aw

<?php 
/**
  * Get a distinct multi dimensional array
  * 
  * @param array $array
  *  array to distinct
  * @param string $keySearch
  *  string key to search double array
  * @param boolean $overwrite = false
  *  boolean to allow values to be overwritten
  * @param array $exception = array()
  *  array of keys to not overwrite if overwrite is true
  * 
  * @return array $result
  *  Return a multi dimensional array witch has been distinct.
*/
public static function distinctMultiDimensionalArray($array, $keySearch, $overwrite = false, $exception = array())
{
  // Check if it's an array
  if( !is_array($array) )
    return false;

  $result = array();

  foreach ( $array as $entry ) 
  {
    // If email doesn't exist
    if ( !isset($result[$entry[$keySearch]]) ) 
      $result[$entry[$keySearch]] = $entry;
    else 
    {
      // If email exist
      foreach ( $entry as $key => $value ) 
      {
        if( !empty($value) )
        {
          // If not empty value and this value is different from before and you don't want to overwrite values
          // Or you want to overwrite values except some keys
          if( ( !empty( $result[$entry[$keySearch]][$key] ) 
                && $result[$entry[$keySearch]][$key] != $value 
                && $overwrite == false )
            ||
              ( $overwrite == true 
                && in_array($key, $exception) ) )
            $result[$entry[$keySearch]][$key] = $result[$entry[$keySearch]][$key] . ', ' . $value;
          else
            $result[$entry[$keySearch]][$key] = $value;
        }


      }
    }
  }
  $result = array_values($result);

  return $result;
}
?>