asort

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Sort an array and maintain index association

asort ( array &$array [, int $sort_flags = SORT_REGULAR ] ) : bool

array

The input array.

sort_flags

Modify the sorting behavior.

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

Returns TRUE on success or FALSE on failure.

<?

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

asort($array);

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

?>

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

<?

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

asort($array, $sort_flags);

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

?>

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

PHP