PHP Logical Operators

Rumman Ansari   Software Engineer   2020-02-06   5402 Share
☰ Table of Contents

Table of Content:

The PHP logical operators are used to combine conditional statements.

Operator Name Example Result
and And $x and $y True if both $x and $y are true
or Or $x or $y True if either $x or $y is true
xor Xor $x xor $y True if either $x or $y is true, but not both
&& And $x && $y True if both $x and $y are true
|| Or $x || $y True if either $x or $y is true
! Not !$x True if $x is not true

Example: $x and $y

True if both $x and $y are true

Code: 



<!DOCTYPE html>
<html>
<body>

<?php
$x = 50;  
$y = 60;

if ($x == 50 and $y == 60) {
    echo "Happy Code!";
}
?>  

</body>
</html>

Output:

This will produce the following result 



Happy Code!

Example: $x or $y

True if either $x or $y is true

Code: 



<!DOCTYPE html>
<html>
<body>

<?php
$x = 60;  
$y = 50;

if ($x == 60 or $y == 80) {
    echo "Happy Code!";
}
?>  

</body>
</html>

Output:

This will produce the following result 



Happy Code!

Example: $x xor $y

True if either $x or $y is true, but not both

True if either $x or $y is true, but not both

Code: 



<!DOCTYPE html>
<html>
<body>

<?php
$x = 60;  
$y = 50;

if ($x == 60 xor $y == 80) {
    echo "Happy Code!";
}
?>  

</body>
</html>

Output:

This will produce the following result 



Happy Code!

Example: $x && $y

True if both $x and $y are true

Code: 



<!DOCTYPE html>
<html>
<body>

<?php
$x = 60;  
$y = 50;

if ($x == 60 && $y == 50) {
    echo "Happy Code!";
}
?>  

</body>
</html>

Output:

This will produce the following result 



Happy Code!

Example: $x || $y

True if either $x or $y is true

Code: 



<!DOCTYPE html>
<html>
<body>

<?php
$x = 60;  
$y = 50;

if ($x == 60 || $y == 80) {
    echo "Happy Code!";
}
?>  

</body>
</html>

Output:

This will produce the following result 



Happy Code!

Example: !$x

True if $x is not true

Code: 



<!DOCTYPE html>
<html>
<body>

<?php
$x = 70;  

if ($x !== 90) {
    echo "Happy Code!";
}
?>  

</body>
</html>

Output:

This will produce the following result 



Happy Code!
‹ Previous -   Increment/Decrement operators
Next › -   String operators