The sample above is only true on some platforms that only use a simple 'C' locale, where individual bytes are considered as complete characters that are converted to lowercase before being differentiated.
Other locales (see LC_COLLATE and LC_ALL) use the difference of collation order of characters, where characters may be groups of bytes taken from the input strings, or simply return -1, 0, or 1 as the collation order is not simply defined by comparing individual characters but by more complex rules.
Don't base your code on a specific non null value returned by strcmp() or strcasecmp(): it is not portable. Just consider the sign of the result and be sure to use the correct locale!
strcasecmp
(PHP 4, PHP 5)
strcasecmp — 대소문자를 구별하지 않는 바이너리 호환 문자열 비교
설명
int strcasecmp
( string $str1
, string $str2
)
str1 이 str2 보다 작다면 < 0 을 반환하고; str1 이 str2 보다 크다면 > 0 을 반환합니다. 동일하다면 0을 반환합니다.
Example#1 strcasecmp() 예제
<?php
$var1 = "Hello";
$var2 = "hello";
if (strcasecmp($var1, $var2) == 0) {
echo '대소문자를 구별하지 않는 문자열 비교에서 $var1은 $var2와 동일합니다.';
}
?>
참고: ereg(), strcmp(), substr(), stristr(), strncasecmp(), strstr().
strcasecmp
27-Aug-2002 06:53
