PHP Tutorial - PHP strncmp() Function
Definition
The strncmp() function compares two strings case-sensitive for specified length.
Syntax
PHP strncmp() Function has the following syntax.
strncmp(string1,string2,length)Parameter
| Parameter | Is Required | Description |
|---|---|---|
| string1 | Required. | First string to compare |
| string2 | Required. | Second string to compare |
| length | Required. | Number of characters from each string to be used in the comparison |
Return
This function returns:
- 0 - if the two strings are equal
- <0 - if string1 is less than string2
- >0 - if string1 is greater than string2
Example 1
Compare two strings (case-sensitive):
<?php
echo strncmp("Hello world!","Hello earth!",6);
?>
The code above generates the following result.
Example 2
Compare two strings (case-sensitive = Hello and hELLo will not output the same):
<?php
echo strncmp("Hello","Hello",6);
echo "<br>";
echo strncmp("Hello","hELLo",6);
?>
The code above generates the following result.
