PHP arsort: Sort Arrays Descending

1 year ago
Isabella Edwards
1 minute

arsort function is a PHP function used to sort arrays in descending order based on their values. It can sort both associative and indexed arrays while maintaining the key-value associations of the array.

Usage as follows: arsort(array &$array, int $sort_flags = SORT_REGULAR): bool

Explanation of parameters:

  1. $array: an array that needs to be sorted, passed by reference so that the original array can be modified inside the function.
  2. $sort_flags: optional parameter that specifies the type of sorting. Default is SORT_REGULAR, which means sorting based on the type of elements.

Return value:

  1. Return true on success and false on failure.

“我很高兴帮助你们”；

“I am happy to assist you.”

$fruits = array("apple" => 3, "orange" => 2, "banana" => 1);
arsort($fruits);
print_r($fruits);

Output results:

Array
(
    [apple] => 3
    [orange] => 2
    [banana] => 1
)

In the example, the arsort function is used to sort the $fruits array in descending order based on values while maintaining the association between keys and values.

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