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PHP5中文手册

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.