rsort

Description
Syntax
Examples
Links

Description

The rsort of Array for PHP sort an array in descending order.

Syntax

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

Parameters

array

The input array.

flags

Modify the sorting behavior.

Constant	Description
SORT_REGULAR	compare items normally
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

1 · array

<?

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

rsort($array);

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

?>

0 => orange
1 => apple
2 => Lemon
3 => Banana

2 · flags · SORT_REGULAR

<?

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

rsort($array, $flags);

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

?>

0 => orange
1 => apple
2 => Lemon
3 => Banana

3 · flags · SORT_NUMERIC

<?

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

rsort($array, $flags);

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

?>

0 => Lemon
1 => orange
2 => Banana
3 => apple

4 · flags · SORT_STRING

<?

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

rsort($array, $flags);

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

?>

0 => orange
1 => apple
2 => Lemon
3 => Banana

5 · flags · SORT_LOCALE_STRING

<?

$category = LC_ALL;
$locale = "en_US";

setlocale($category, $locale);

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

rsort($array, $flags);

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

?>

0 => orange
1 => Lemon
2 => Banana
3 => apple

6 · flags · SORT_NATURAL

<?

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

rsort($array, $flags);

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

?>

0 => orange
1 => apple
2 => Lemon
3 => Banana

7 · flags · SORT_FLAG_CASE · SORT_STRING

<?

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

rsort($array, $flags);

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

?>

0 => orange
1 => Lemon
2 => Banana
3 => apple

8 · flags · SORT_FLAG_CASE · SORT_NATURAL

<?

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

rsort($array, $flags);

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

?>

0 => orange
1 => Lemon
2 => Banana
3 => apple