asort
Description
Sort an array and maintain index association
Syntax
asort ( array &$array [, int $sort_flags = SORT_REGULAR ] ) : bool
Parameters
arrayThe input array.
sort_flagsModify the sorting behavior.
| SORT_REGULAR | compare items normally; the details are described in the comparison operators div |
| 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
Returns TRUE on success or FALSE on failure.
Examples
1 · array
<?
$array = array("d" => "Lemon", "a" => "orange", "B" => "Banana", "C" => "apple");
asort($array);
foreach ($array as $key => $value) {
echo "$key => $value\n";
}
?>B => Banana d => Lemon C => apple a => orange
2 · sort_flags
<?
$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
