# Collator::sortWithSortKeys

# collator_sort_with_sort_keys

(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0)

Collator::sortWithSortKeys -- collator_sort_with_sort_keys — Sort array using specified collator and sort keys

### Description

Object oriented style

public Collator::sortWithSortKeys ( array `&$arr` ) : bool

Procedural style

collator_sort_with_sort_keys ( Collator `$coll` , array `&$arr` ) : bool

Similar to collator_sort() but uses ICU sorting keys produced by ucol_getSortKey() to gain more speed on large arrays.

### Parameters

`coll`

  Collator object.

`arr`

  Array of strings to sort

### Return Values

Returns `TRUE` on success or `FALSE` on failure.

### Examples

Example #1 collator_sort_with_sort_keys() example

`<?php
$arr = array( 'Köpfe', 'Kypper', 'Kopfe' );
$coll = collator_create( 'sv' );
collator_sort_with_sort_keys( $coll, $arr );
var_export( $arr );
?>`

The above example will output:

    array (
      0 => 'Kopfe',
      1 => 'Kypper',
      2 => 'Köpfe',
    )

### See Also

- Collator constants
- collator_sort() - Sort array using specified collator
- collator_asort() - Sort array maintaining index association