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browncardigan on 02/05/10

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orderMultiAssocArray


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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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