PHP: strcoll() function
PHP: Locale based string comparison
The strcoll() function is used to compare two strings. The comparison is case sensitive and uses the current locale for doing the comparison.
Version:
(PHP 4 and above)
Syntax:
strcoll(string1, string2)
Parameters:
| Name | Description | Required / Optional |
Type |
|---|---|---|---|
| string1 | The first string to compare. | Required | String |
| string2 | The second string to compare. | Required | String |
Return value:
<0 : if string1<string2.
>0 : if string1>string2.
=0 : if string1=string2.
Value Type: Integer.
Example:
<?php
$a = 'aa';
$b = 'AA';
echo strcmp ($a, $b).'<br>';
setlocale (LC_COLLATE, 'C');
echo "C: " . strcoll ($a, $b).'<br>';
setlocale (LC_COLLATE, 'de_DE');
echo 'de_DE: '.strcoll ($a, $b).'<br>';
setlocale (LC_COLLATE, 'de_CH');
echo 'de_CH: '.strcoll ($a, $b).'<br>';
setlocale (LC_COLLATE, 'en_US');
echo 'en_US: '.strcoll($a, $b).'<br>';
?>
Output:
1 C: 1 de_DE: -2 de_CH: -2 en_US: -2
View the example in the browser
See also