/** * Sort a 2 dimension array with values in the second dimension * * Order can be string of a field, which will default to asc * OR as array(field1,field2...fieldn) each defaulting to asc * OR as assoc array(field1 => dir[asc|desc], field2 => dir[asc|desc]...fieldn * => dir[asc|desc]) * * PHP Sort constants can be used: SORT_ASC | SORT_DESC * * …

2Dimension Array Sort

<?php
/**
 * Sort a 2 dimension array with values in the second dimension
 *
 * Developer: chazmead89@gmail.com  // @RaggaMuffin-4201
 * 
 * Order can be string of a field, which will default to asc
 * OR as array(field1,field2...fieldn) each defaulting to asc
 * OR as assoc array(field1 => dir[asc|desc], field2 => dir[asc|desc]...fieldn
 * => dir[asc|desc])
 *
 * PHP Sort constants can be used: SORT_ASC | SORT_DESC
 *
 * @param array $array array to sort - passed by reference
 * @param mixed $order
 * @return null
 */
function multisort(&$array,$order) {

    usort($array, function($a,$b) use ($order) {
      $sortMap = array('asc'=>SORT_ASC,'desc'=>SORT_DESC);
        
      $aObj = (object)$a;
      $bObj = (object)$b;
        
      if (is_string($order))
        $order = array($order);
    
      if (is_object($order))
        $order = (array)$order;
    
      $i = 0;
      $cOrder = count($order);
  
      foreach($order as $field => $dir) {
        if (is_numeric($field)) {
          $field = $dir;
          $dir = SORT_ASC;
        }

        // Goto next step when a mis-match is found.
        if ($aObj->$field != $bObj->$field)
          break;
  
        // All fields match return 0
        if (++$i === $cOrder)
          return 0;
      }
    
      if(!is_numeric($dir)) {
        $dir = strtolower($dir);
        $dir = $sortMap[$dir];
      }
    
      $d = ($dir === SORT_DESC) ? -1 : 1;
      $c = ($aObj->$field < $bObj->$field) ? -1 : 1;
    
      return $c*$d;
    });
}