strncasecmp

(PHP 4 >= 4.0.2, PHP 5)

strncasecmp — Binary safe case-insensitive string comparison of the first n characters

说明

int strncasecmp ( string $str1 , string $str2 , int $len )

This function is similar to strcasecmp(), with the difference that you can specify the (upper limit of the) number of characters from each string to be used in the comparison.

参数

str1: The first string.
str2: The second string.
len: The length of strings to be used in the comparison.

返回值

Returns < 0 if str1 is less than str2 ; > 0 if str1 is greater than str2 , and 0 if they are equal.

参见

preg_match() - 进行正则表达式匹配
strcmp() - Binary safe string comparison
strcasecmp() - Binary safe case-insensitive string comparison
substr() - Return part of a string
stristr() - Case-insensitive strstr
strstr() - Find first occurrence of a string