strncmp

(PHP 4, PHP 5)

strncmp — Binary safe string comparison of the first n characters

说明

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

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

Note that this comparison is case sensitive.

参数

str1: The first string.
str2: The second string.
len: Number of characters to use 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()
strcmp()
strcasecmp()
substr()
stristr()
strncasecmp()
strstr()


	PHP5中文手册 strncasecmp strpbrk Strings PHP Manual strncmp (PHP 4, PHP 5) strncmp — Binary safe string comparison of the first n characters 说明 int strncmp ( string `$str1` , string `$str2` , int `$len` ) This function is similar to strcmp(), with the difference that you can specify the (upper limit of the) number of characters from each string to be used in the comparison. Note that this comparison is case sensitive. 参数 `str1` The first string. `str2` The second string. `len` Number of characters to use 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() strcmp() strcasecmp() substr() stristr() strncasecmp() strstr() strncasecmp strpbrk Strings PHP Manual