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PHP strncmp() Function

PHP strncmp() function is used to compare two given input strings. It is case-sensitive and binary-safe. It is similar to strcmp() function but the only difference is that strcmp() function doesn’t have the length parameter.

Syntax:

  strncmp($string1, $string2, $length);

Parameter Values

Parameter	Description
string1	This is a required parameter. This parameter defines the first string to compare.
string2	This is a required parameter. This parameter defines the second string to compare.
length	This is a required parameter. This parameter defines the number of characters from each string to be used in the comparison.

Here is an example of strncmp() function in PHP:

<html>
<body>

<?php
echo strncmp("PHPTPOINT","PHPTPOINT..",8);  // returns zero when both the strings are same.
?>

</body>
</html>

Output:
0

Here is an another example of strncmp() function in PHP:

<html>
<body>

<?php
$str = "PHPTPOINT";

echo strncmp($str,"PHP",2);  // case sensitive
echo "<br>";
echo strncmp($str,"PHPT",3);
echo "<br>";
echo strncmp($str,"PHPT",7); // first string is greater than second string.

?>

</body>
</html>

Output:
0
0
3

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