Collator::compare
collator_compare
(PHP 5 >= 5.3.0, PHP 7, PHP 8, PECL intl >= 1.0.0)
Collator::compare -- collator_compare — Compare two Unicode strings
說明
物件導向風格
$string1, string $string2): int|false過程化風格
Compare two Unicode strings according to collation rules.
參數
-
object -
Collator object.
-
string1 -
The first string to compare.
-
string2 -
The second string to compare.
返回值
Return comparison result:
-
1 if
string1is greater thanstring2; -
0 if
string1is equal tostring2; -
-1 if
string1is less thanstring2.
false on failure.
範例
示例 #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";
}
?>
以上例程會輸出：
s1 is greater than s2
示例 #2 Comparing strings without diacritics or case-sensitivity
<?php
$c = new Collator( 'en' );
$c->setStrength( Collator::PRIMARY );
if ( $c->compare( 'Séan', 'Sean' ) == 0 )
{
echo "The same\n";
}
以上例程會輸出：
The same
This example instructs the collator to compare with only taking the base characters into account. The documentation for Collator->setStrength() explains the different strengths.