uksort

(PHP 4, PHP 5, PHP 7)

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uksort ( array &$array , callable $key_compare_func ) : bool

uksort() 锟斤拷锟斤拷锟斤拷使锟斤拷锟矫伙拷锟结供锟侥比较猴拷锟斤拷锟斤拷锟斤拷锟斤拷锟叫的硷拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟揭拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷要锟斤拷一锟街诧拷寻锟斤拷锟侥憋拷准锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷么应锟斤拷使锟矫此猴拷锟斤拷锟斤拷

Note:

If two members compare as equal, their relative order in the sorted array is undefined.

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array

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key_compare_func

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callback ( mixed $a, mixed $b ) : int

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锟缴癸拷时锟斤拷锟斤拷 TRUE锟斤拷 锟斤拷锟斤拷锟斤拷失锟斤拷时锟斤拷锟斤拷 FALSE锟斤拷

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Example #1 uksort() 锟斤拷锟斤拷

<?php
function cmp($a, $b)
{
    $a = preg_replace('@^(a|an|the) @', '', $a);
    $b = preg_replace('@^(a|an|the) @', '', $b);
    return strcasecmp($a, $b);
}

$a = array("John" => 1, "the Earth" => 2, "an apple" => 3, "a banana" => 4);

uksort($a, "cmp");

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

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an apple: 3
a banana: 4
the Earth: 2
John: 1

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