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PHP - Ds Map sort() Function


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Ds\Map::sort() function can sort the map in-place by value.

Syntax

public void Ds\Map::sort([ callable $comparator ] )

Ds\Map::sort() function can sort the map in-place by value by using an optional comparator function.

Ds\Map::sort() function doesn't return any value.

Example 1

<?php 
   $map = new \Ds\Map([1 => 20, 2 => 10, 3 => 30]); 
   $map->sort(); 
   
   print_r($map); 
?>

Example 2

<?php 
   $map = new \Ds\Map([1 => 20, 2 => 10, 3 => 30]); 
   $func = function($first, $second) { 
      if($first > $second) 
         return -1; 
      else if($first < $second) 
         return 1; 
      else 
         return 0; 
   }; 
   $map->sort($func); 
   print_r($map); 
?>
php_function_reference.htm

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