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Posted By

browncardigan on 02/05/10

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Last Edited at 02/05/10 12:32am

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orderMultiAssocArray

/ Published in: PHP
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Orders a multi-dimensional array by one of it's fields.

There is also the option to treat this like an SQL-style 'order by' query with the $field value passed in (ie. 'user_id desc') to do reverse ordering.

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  1. function orderMultiAssocArray($array=array(), $field='', $keep_assoc=true) {
  2. 	if ($field != '') {
  3. 		if (strstr($field, ' desc')) {
  4. 			$field = str_replace(' desc', '', $field);
  5. 			$reverse = true;
  6. 		}
  7. 		else {
  8. 			$reverse = false;
  9. 		}
  10. 		$ar = array();
  11. 		foreach ($array as $key => $a) {
  12. 			$ar[$key] = $a[$field];
  13. 		}
  14. 		if ($reverse) { arsort($ar); }
  15. 		else { asort($ar); }
  16. 		$array_redux = array();
  17. 		$counter=0;
  18. 		foreach ($ar as $k => $a) {
  19. 			$key = $keep_assoc ? $k : $counter;
  20. 			$array_redux[$key] = $array[$k];
  21. 			$counter++;
  22. 		}
  23. 		$array = $array_redux;
  24. 	}
  25. 	return $array;
  26. }

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