# PHP strncasecmp() Function

PHP String Reference

## Example

Compare two strings (case-insensitive):

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

## 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.

## Syntax

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

## Technical Details

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+

## More Examples

## Example 1

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);
?>
Run example »

PHP String Reference

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