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.

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

• Main PHP Function Online page
• strncmp() - Binary safe string comparison of the first n characters
• preg_match() - Perform a regular expression match
• substr_compare() - Binary safe comparison of two strings from an offset, up to length characters
• strcasecmp() - Binary safe case-insensitive string comparison
• stristr() - Case-insensitive strstr
• substr() - Return part of a string