arsort

Sort an array in reverse order and maintain index association

Syntax

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

Parameters

array

The input array.

flags

Modify the sorting behavior.

Constant Description
SORT_REGULAR compare items normally; the details are described in the comparison operators section
SORT_NUMERIC compare items numerically
SORT_STRING compare items as strings
SORT_LOCALE_STRING compare items as strings, based on the current locale. It uses the locale, which can be changed using setlocale()
SORT_NATURAL compare items as strings using "natural ordering" like natsort()
SORT_FLAG_CASE can be combined (bitwise OR) with SORT_STRING or SORT_NATURAL to sort strings case-insensitively

Return

Always returns true.

Examples

array

<?

$array = array("d" => "Lemon", "a" => "orange", "B" => "Banana", "C" => "apple");

arsort($array);

foreach($array as $key => $value)
{
    echo "$key => $value\n";
}

?>
a => orange
C => apple
d => Lemon
B => Banana

flags

<?

$array = array("d" => "Lemon", "a" => "orange", "B" => "Banana", "C" => "apple");
$flags = SORT_NATURAL | SORT_FLAG_CASE;

arsort($array, $flags);

foreach($array as $key => $value)
{
    echo "$key => $value\n";
}

?>
a => orange
d => Lemon
B => Banana
C => apple

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