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Collator::asort

collator_asort

(PHP 5 >= 5.3.0, PHP 7, PHP 8, PECL intl >= 1.0.0)

Collator::asort -- collator_asortSort array maintaining index association

说明

面向对象风格

public Collator::asort(array &$array, int $flags = Collator::SORT_REGULAR): bool

过程化风格

collator_asort(Collator $object, array &$array, int $flags = Collator::SORT_REGULAR): bool

This function sorts an array such that array indices maintain their correlation with the array elements they are associated with. This is used mainly when sorting associative arrays where the actual element order is significant. Array elements will have sort order according to current locale rules.

Equivalent to standard PHP asort().

参数

object

Collator object.

array

Array of strings to sort.

flags

Optional sorting type, one of the following:

Default flags value is Collator::SORT_REGULAR. It is also used if an invalid flags value has been specified.

返回值

成功时返回 true, 或者在失败时返回 false

示例

示例 #1 collator_asort() example

<?php
$coll
= collator_create( 'en_US' );
$arr = array(
'a' => '100',
'b' => '50',
'c' => '7'
);
collator_asort( $coll, $arr, Collator::SORT_NUMERIC );
var_export( $arr );

collator_asort( $coll, $arr, Collator::SORT_STRING );
var_export( $arr );
?>

以上示例会输出:

array (
  'c' => '7',
  'b' => '50',
  'a' => '100',
)array (
  'a' => '100',
  'b' => '50',
  'c' => '7',
)

参见

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User Contributed Notes 1 note

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0
alix dot axel at NOSPAM dot gmail dot com
13 years ago
For those of you who are looking for a way to integrate natural sorting with the UCA rules this hack seems to work:

<?php

$array
= array
(
'1', '100',
'al', 'be',
'Alpha', 'Beta',
'Álpha', 'Àlpha', 'Älpha',
'かたかな',
'img1.png', 'img2.png',
'img10.png', 'img20.png'
);

echo
'<pre>';
print_r(sortIntl($array, true));
echo
'</pre>';

function
sortIntl($array, $natural = true)
{
$data = $array;

if (
$natural === true)
{
$data = preg_replace_callback('~([0-9]+)~', 'natsortIntl', $data);
}

collator_asort(collator_create('root'), $data);

return
array_intersect_key($array, $data);
}

function
natsortIntl($number)
{
return
sprintf('%032d', $number);
}

?>

Output:

Array
(
[0] => 1
[1] => 100
[2] => al
[3] => be
[4] => Alpha
[5] => Beta
[6] => Álpha
[7] => Àlpha
[8] => Älpha
[9] => かたかな
[10] => img1.png
[11] => img2.png
[12] => img10.png
[13] => img20.png
)
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