Collator::compare
collator_compare
(PHP 5 >= 5.3.0, PECL intl >= 1.0.0)
Collator::compare -- collator_compare — Compare two Unicode strings
Description
Object oriented style
$str1
, string $str2
)Procedural style
Compare two Unicode strings according to collation rules.
Parameters
-
coll -
Collator object.
-
str1 -
The first string to compare.
-
str2 -
The second string to compare.
Return Values
Return comparison result:
-
1 if
str1is greater thanstr2; -
0 if
str1is equal tostr2; -
-1 if
str1is less thanstr2.
FALSE
is returned.
This function may
return Boolean FALSE, but may also return a non-Boolean value which
evaluates to FALSE. Please read the section on Booleans for more
information. Use the ===
operator for testing the return value of this
function.
Examples
Example #1 collator_compare()example
<?php
$s1 = 'Hello';
$s2 = 'hello';
$coll = collator_create( 'en_US' );
$res = collator_compare( $coll, $s1, $s2 );
if ($res === false) {
echo collator_get_error_message( $coll );
} else if( $res > 0 ) {
echo "s1 is greater than s2\n";
} else if( $res < 0 ) {
echo "s1 is less than s2\n";
} else {
echo "s1 is equal to s2\n";
}
?>
The above example will output:
s1 is greater than s2
- PHP Руководство
- Функции по категориям
- Индекс функций
- Справочник функций
- Поддержка языков и кодировок
- Internationalization Functions
- Функция Collator::asort() - Sort array maintaining index association
- Функция Collator::compare() - Compare two Unicode strings
- Функция Collator::__construct() - Create a collator
- Функция Collator::create() - Create a collator
- Функция Collator::getAttribute() - Get collation attribute value
- Функция Collator::getErrorCode() - Get collator's last error code
- Функция Collator::getErrorMessage() - Get text for collator's last error code
- Функция Collator::getLocale() - Get the locale name of the collator
- Функция Collator::getSortKey() - Get sorting key for a string
- Функция Collator::getStrength() - Get current collation strength
- Функция Collator::setAttribute() - Set collation attribute
- Функция Collator::setStrength() - Set collation strength
- Функция Collator::sortWithSortKeys() - Sort array using specified collator and sort keys
- Функция Collator::sort() - Sort array using specified collator
Коментарии
The Collator class with method compare does what the non existing mb_strcmp, mb_strcasecmp, mb_strnatcmp and mb_strnatcasecmp would do for multibyte strings (UTF8) - but better! :-)
For "case": the Collator is case insensitive due to Collator::CASE_FIRST defaults to Collator::OFF, but can be changed with method setAttribute.
For "nat" (natural sort order for numbers): use method setAttribute with Collator::NUMERIC_COLLATION and Collator:ON to enable.