PHP array_arsort() Function

The PHP `array_arsort()` function sorts an associative array in descending order, according to the value. The keys are maintained while sorting.

Definition

The syntax of `array_arsort()` is as follows:

bool array_arsort(array &$array, int $flags = SORT_REGULAR)
  

• $array: The input array to sort.
• $flags (optional): You can modify the sorting behavior using these flags:
• SORT_REGULAR: Compare items normally (default).
• SORT_NUMERIC: Compare items numerically.
• SORT_STRING: Compare items as strings.
• SORT_NATURAL: Compare items using "natural order".
• SORT_FLAG_CASE: Used with `SORT_STRING` for case-insensitive string comparisons.

File: array_arsort1.php

<?php    
$ages = array("Peter" => 35, "Ben" => 37, "Joe" => 43);  
array_arsort($ages);  
foreach($ages as $key => $value) {  
  echo "Key: ".$key." Value: ".$value."
";  
}  
?>  
                    

Sorting with Flags

File:array_arsort2.php

<?php    
$products = array("Apple" => "20", "Orange" => "10", "Banana" => "15");  
array_arsort($products, SORT_NUMERIC);  
foreach($products as $key => $value) {  
echo "Product: ".$key." Price: ".$value."
";  
}  
?>