PHP: array_multisort() function

Last update on August 19 2022 21:51:16 (UTC/GMT +8 hours)

PHP: Sort multiple or multi-dimensional arrays

The array_multisort() function is used to sort multiple arrays or a multidimensional array by one or more dimensions.

Note: Associative (string) keys will be maintained, but numeric keys will be re-indexed.

Version:

Syntax:

array_multisort(array_name1, sorting_order, sorting_type, array_name2, array_name3...)

Parameters:

Name	Description	Required / Optional	Type
array_name1	Specifies the array.	Required	Array
sorting_order	Specifies the sorting order. SORT_ASC - Sort in ascending order SORT_DESC - Sort in descending order	Optional	Mixed*
sorting_type	Sets the sorting behavior. Possible type : SORT_REGULAR - Compare items normally. SORT_NUMERIC - Compare items numerically. SORT_STRING - Compare items as strings.	Optional	Mixed*
array_name2,3....	More arrays.	Optional	Array

*Mixed: Mixed indicates that a parameter may accept multiple(but not necessarily all) types.

Return value

TRUE on success or FALSE on failure.

Value Type: Boolean.

Example - 1:

<?php

$array1 = array(1,7,10,6);$array2 = array(100,20,25,10);array_multisort($array1, $array2);

print_r($array1);

print_r($array2);

?>

Output:

Array ( [0] => 1 [1] => 6 [2] => 7 [3] => 10 ) Array ( [0] => 100 [1] => 10 [2] => 20 [3] => 25 )

View the example in the browser

Example - 2 :

<?php

$array1 = array(array(1,"7",10,6,"Z"),array(100,20,"25",10,50));

array_multisort($array1[0],SORT_ASC, SORT_STRING,$array1[1],SORT_NUMERIC, SORT_DESC);

var_dump($array1);

?>

Output :

array(2) {
  [0]=>
  array(5) {
    [0]=>
    int(1)
    [1]=>
    int(10)
    [2]=>
    int(6)
    [3]=>
    string(1) "7"
    [4]=>
    string(1) "Z"
  }
  [1]=>
  array(5) {
    [0]=>
    int(100)
    [1]=>
    string(2) "25"
    [2]=>
    int(10)
    [3]=>
    int(20)
    [4]=>
    int(50)
  }
}

View the example in the browser

Practice here online :

See also

PHP Function Reference

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