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The rsort Function

The rsort function sorts an array in descending order. The function modifies the array itself.

Syntax

rsort(array &$array, int $flags = SORT_REGULAR): bool

Let's sort an array in descending order:

<?php
	$arr = [1, 3, 2, 5, 4];
	
	rsort($arr);
	var_dump($arr);
?>

Code execution result:

[5, 4, 3, 2, 1]

the sort function,
which sorts in ascending order of elements
the ksort function,
which sorts in ascending order of keys
the krsort function,
which sorts in descending order of keys
the asort function,
which sorts in ascending order of elements while preserving keys
the arsort function,
which sorts in descending order of elements while preserving keys
the natsort function,
which sorts using natural order algorithm
the natcasesort function,
which sorts using natural order algorithm case-insensitively
the usort function,
which sorts using a callback function
the uksort function,
which sorts by keys using a callback function
the uasort function,
which sorts using a callback function while preserving keys
the array_multisort function,
which sorts multiple arrays

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