PHP strncasecmp() Function

Compare two strings (case-insensitive):

<?php
echo strncasecmp("Hello world!","hello earth!",6);
?>

Definition and Usage

The strncasecmp() function compares two strings.

Note: The strncasecmp() is binary-safe and case-insensitive.

Tip: This function is similar to the strcasecmp() function, except that strcasecmp() does not have the length parameter.

strncasecmp(string1,string2,length)

Parameter	Description
string1	Required. Specifies the first string to compare
string2	Required. Specifies the second string to compare
length	Required. Specify the number of characters from each string to be used in the comparison

Return Value:	This function returns: 0 - if the two strings are equal <0 - if string1 is less than string2 >0 - if string1 is greater than string2
PHP Version:	4.0.2+

Compare two strings (case-insensitive = Hello and hELLo will output the same):

<?php
echo strncasecmp("Hello","Hello",6);
echo "<br>";
echo strncasecmp("Hello","hELLo",6);
?>