Collator::compare

collator_compare

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

Collator::compare -- collator_compareCompare two Unicode strings

说明

面向对象风格

public int Collator::compare ( string $str1 , string $str2 )

过程化风格

int collator_compare ( Collator $coll , string $str1 , string $str2 )

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 str1 is greater than str2 ;

  • 0 if str1 is equal to str2;

  • -1 if str1 is less than str2 .

On error boolean 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

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 ) {
    echo 
"s1 is greater than s2\n";
} else if( 
$res ) {
    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

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