PHP strncmp() Function Usage and Example

PHP String Character String Function Manual

The strncmp() function is used for binary-safe comparison of the first few characters of strings (case sensitive).

Syntax

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

Definition and Usage

Used to compare the first len characters.

Return Value

　If str1 Less than str2 Returns < 0; if str1 Greater than str2 Returns > 0; if they are equal, return 0.

Parameter

Online Example

Try the following example to compare two strings (case sensitive):

<?php
　　　//strncmp function compares two strings (case sensitive)
　　　echo strncmp("input","input",6);
　　　echo "<br>";
　　　
　　　echo strncmp("input","iMPut",6);
?>

Output Result

0
8448

PHP String Character String Function Manual