Collator::compare

collator_compare

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

Collator::compare -- collator_compare — 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 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 > 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

相关文章
php collator compare two unicode stringsphp collator get sorting key for a stringphp collator get current collation strengthphp collator set collation attributephp dbx 函数 compare two rows for sorting purposesphp gd 和图像处理 函数 concatenate two affine transformation matricesphp statistic 函数 computes the covariance of two data setsphp trader 函数 two crowsphp com 函数 performs a bitwise implication on two variantsphp xdiff 函数 make binary diff of two stringsphp xdiff 函数 make unified diff of two stringsphp xdiff 函数 make binary diff of two strings using the rabin s polynomial fingerprinting algorithmphp imagick composites two imagesphp intlcalendar compare time of two intlcalendar objects for equalityphp intlchar find unicode character by name and return its code point valuephp intlchar retrieve the name of a unicode characterphp intlchar get the value for a unicode property for a code pointphp intlchar get the numeric value for a unicode code pointphp intlchar check if code point has the uppercase unicode propertyphp intlchar check if code point has the white space unicode property
关注编程学问公众号