w3resource

PHP: strcmp() function

Description

The strcmp() function is used to compare two strings.

Version:

(PHP 4 and above)

Syntax:

strcmp(string1, string2)

Parameters:

Name Description Required /
Optional		 Type
string1 The first string Required String
string2 The second string Required String

Return value:

<0 : if string1<string2.
>0 : if string1>string2.
=0 : if string1=string2.

Value Type: Integer.

Example: 

<?php
$string1='w3resource';
$string2='W3resource';
$result=strcmp($string1,$string2);
echo $result; 
?>

Output:

1

View the example in the browser

See also

PHP Function Reference

Previous: strchr
Next: strcoll



PHP: Tips of the Day

In PHP, there are two versions of logical AND and OR operators.

Operator True if
$a and $b Both $a and $b are true
$a && $b Both $a and $b are true
$a or $b Either $a or $b is true
$a || $b Either $a or $b is true

Note that the && and || opererators have higher precedence than and and or. See table below:

Evaluation Result of $e Evaluated as
$e = false || true True $e = (false || true)
$e = false or true False ($e = false) or true

Because of this it's safer to use && and || instead of and and or.