Collator::compare()
collator_compare
(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0)
Compare two Unicode strings
说明
面向对象风格public Collator::compare(string $str1,string $str2): int
过程化风格
collator_compare(Collator$coll,string $str1,string $str2): int
Compare two Unicode strings according to collation rules.
参数
- $coll
Collator object.
- $str1
The first string to compare.
- $str2
The second string to compare.
返回值
Return comparison result:
1 if$str1isgreaterthan$str2;
0 if$str1isequalto$str2;
-1 if$str1islessthan$str2.
FALSE
is returned.Warning此函数可能返回布尔值
FALSE
,但也可能返回等同于FALSE
的非布尔值。请阅读布尔类型章节以获取更多信息。应使用===运算符来测试此函数的返回值。
范例
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"; } ?>
以上例程会输出:
s1 is greater than s2
参见
- collator_sort() Sort array using specified collator