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PHP Logical Operators

Published On: November 2nd, 2019|Categories: PHP|Tags: PHP|1 min read|

What are PHP logical operator?

PHP Comparison Operators are used to compare two values (integer, a.k.a. number or string a.k.a. text). The operators are AND, OR, XOR, NOT.

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

Examples:

<?php
# Example 1
$x = 10;  
$y = 5;

if ($x == 10 and $y == 5) {
    echo "Condition met! Hello world!";
}

if ($x == 10 && $y == 5) {
    echo "Condition met! Hello world!";
}

# Example 2
$x = 10;  
$y = 5;

if ($x == 10 or $y == 5) {
    echo "Condition met! Hello world!";
}

if ($x == 10 || $y == 5) {
    echo "Condition met! Hello world!";
}

# Example 3
$x = 100;  
$y = 50;

if ($x == 100 xor $y == 60) {
    echo "Condition met! Hello world!";
}

# Example 4
$x = 10;  

if ($x !== 90) {
    echo "Condition met! Hello world!";
}

?>

Learn more about Logical Operators in the official PHP documentation here.