ArrayObject::uksort
(PHP 5 >= 5.2.0)
ArrayObject::uksort — Sort the entries by keys using a user-defined comparison function
Опис
This function sorts the keys of the entries using a user-supplied comparison function. The key to entry correlations will be maintained.
Параметри
-
cmp_function -
The callback comparison function.
Function
cmp_functionshould accept two parameters which will be filled by pairs of entry keys. The comparison function must return an integer less than, equal to, or greater than zero if the first argument is considered to be respectively less than, equal to, or greater than the second.
Значення, що повертаються
Не повертає значень.
Приклади
Приклад #1 ArrayObject::uksort() example
<?php
function cmp($a, $b) {
$a = preg_replace('@^(a|an|the) @', '', $a);
$b = preg_replace('@^(a|an|the) @', '', $b);
return strcasecmp($a, $b);
}
$array = array("John" => 1, "the Earth" => 2, "an apple" => 3, "a banana" => 4);
$arrayObject = new ArrayObject($array);
$arrayObject->uksort('cmp');
foreach ($arrayObject as $key => $value) {
echo "$key: $value\n";
}
?>
Наведений вище приклад виведе:
an apple: 3 a banana: 4 the Earth: 2 John: 1
Прогляньте Також
- ArrayObject::asort() - Sort the entries by value
- ArrayObject::ksort() - Sort the entries by key
- ArrayObject::natsort() - Sort entries using a "natural order" algorithm
- ArrayObject::natcasesort() - Sort an array using a case insensitive "natural order" algorithm
- ArrayObject::uasort() - Sort the entries with a user-defined comparison function and maintain key association
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