Live Demo: PHP Compare the First N Characters of Two Strings

 
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <title>PHP Compare the First N Characters of Two Strings</title>
</head>
<body>
​
<?php
// Sample strings
$str1 = "Hello John!";
$str2 = "Hello Peter!";
​
// Comparing the first seven characters
echo strncmp($str1, $str2, 7);
?>
​
</body>
</html>