PHP: array_multisort() function
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
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Next: array_pad