array_multisort in PHP

Syntax of array_multisort

bool array_multisort(array array1[, SORT_ASC|SORT_DESC
[, SORT_REGULAR|SORT_NUMERIC|SORT_STRING]] [, array array2[, SORT_ASC|SORT_DESC
[, SORT_REGULAR|SORT_NUMERIC|SORT_STRING]], …])

Used to sort several arrays simultaneously, or to sort a multidimensional array in one or more dimensions. The input arrays are treated as columns in a table to be sorted by rows—the first array is the primary sort. Any values that compare the same according to that sort are sorted by the next input array, and so on

Example of array_multisort

<?php
$ar1 = array(10, 100, 100, 0);
$ar2 = array(1, 3, 2, 4);
array_multisort($ar1, $ar2);

var_dump($ar1);
var_dump($ar2);
?>

Output

array(4) {
  [0]=> int(0)
  [1]=> int(10)
  [2]=> int(100)
  [3]=> int(100)
}
array(4) {
  [0]=> int(4)
  [1]=> int(1)
  [2]=> int(2)
  [3]=> int(3)
}