PHP Logical Operators

हिंदी | PHP Logical Operators in Hindi

हिंदी | Logical Operators of PHP in Hindi

The logical operators are used to perform logical operations based on the given expression. There are six types of Logical Operator in PHP.

## Table of PHP Logical Operators

In the above table of the logical operators, we can see that there are two different variations of `"and"` and `"or"` operators. The reason for the two different variations of “and” and “or” operators is that they operate at different precedences. (See Operator Precedence.)

• `&&, ||` – High Precedence
• `and, or` – Low Precedence

### Logical Operators Examples with the if Statement:

You can use the logical operators and Comparison Operators together. You will see that in the following examples.

and Operator

``````<?php
\$x = true;
\$y = true;
\$z = false;

#[--TRUE-RESULT
if(\$x and \$y){
echo "1 - True Condition.<br>";
}
else{
echo "1 - False Condition.<br>";
}
#--]

#[--FALSE-RESULT
if(\$x and \$z){
echo "2 - True Condition.<br>";
}
else{
echo "2 - False Condition.<br>";
}
#--]

//Logical operators and Comparison Operators together
\$a = 10;
\$b = 20;

#[--TRUE-RESULT
if(\$a > 5 and \$b < 25){
echo "3 - True Condition.<br>";
}
else{
echo "3 - False Condition.<br>";
}
#--]

\$c = "John";

#[--TRUE-RESULT
if(\$c !== \$d and \$d == \$e){
echo "4 - True Condition.<br>";
}
else{
echo "4 - False Condition.<br>";
}
#--]
?>``````
Browser Output
1 – True Condition.
2 – False Condition.
3 – True Condition.
4 – True Condition.

or Operator

``````<?php
\$x = true;
\$x2 = true;
\$y = false;
\$z = false;

#[--TRUE-RESULT
if(\$x or \$x2){
echo "1 - True Condition.<br>";
}
else{
echo "1 - False Condition.<br>";
}
#--]

#[--TRUE-RESULT
if(\$x or \$y){
echo "2 - True Condition.<br>";
}
else{
echo "2 - False Condition.<br>";
}
#--]

#[--FALSE-RESULT
if(\$y or \$z){
echo "3 - True Condition.<br>";
}
else{
echo "3 - False Condition.<br>";
}
#--]

//Logical operators and Comparison Operators together
\$a = 10;
\$b = 20;

#[--TRUE-RESULT
if(\$a > 5 or \$b < 25){
echo "4 - True Condition.<br>";
}
else{
echo "4 - False Condition.<br>";
}
#--]

#[--TRUE-RESULT
if(\$a > 5 or \$b > 25){
echo "5 - True Condition.<br>";
}
else{
echo "5 - False Condition.<br>";
}
#--]

#[--FALSE-RESULT
if(\$a < 5 or \$b > 25){
echo "6 - True Condition.<br>";
}
else{
echo "6 - False Condition.<br>";
}
#--]

\$c = "John";

#[--FALSE-RESULT
if(\$c == \$d or \$d !== \$e){
echo "7 - True Condition.";
}
else{
echo "7 - False Condition.<br>";
}
#--]
?>``````
Browser Output
1 – True Condition.
2 – True Condition.
3 – False Condition.
4 – True Condition.
5 – True Condition.
6 – False Condition.
7 – False Condition.

xor Operator

``````<?php
\$x = true;
\$x2 = true;
\$y = false;
\$z = false;

#[--FALSE-RESULT
if(\$x xor \$x2){
echo "1 - True Condition.<br>";
}
else{
echo "1 - False Condition.<br>";
}
#--]

#[--TRUE-RESULT
if(\$x xor \$y){
echo "2 - True Condition.<br>";
}
else{
echo "2 - False Condition.<br>";
}
#--]

#[--FALSE-RESULT
if(\$y xor \$z){
echo "3 - True Condition.<br>";
}
else{
echo "3 - False Condition.<br>";
}
#--]

//Logical operators and Comparison Operators together
\$a = 10;
\$b = 20;

#[--TRUE-RESULT
if(\$a > 5 xor \$b > 25){
echo "4 - True Condition.<br>";
}
else{
echo "4 - False Condition.<br>";
}
#--]

\$c = "John";

#[--TRUE-RESULT
if(\$c !== \$d xor \$d == \$e){
echo "4 - True Condition.<br>";
}
else{
echo "4 - False Condition.<br>";
}
#--]
?>``````
Browser Output
1 – False Condition.
2 – True Condition.
3 – False Condition.
4 – True Condition.
4 – True Condition.

! (Not) Operator

``````<?php
\$x = true;
\$y = false;

#[--FALSE-RESULT
if(!\$x){
echo "1 - True Condition.<br>";
}
else{
echo "1 - False Condition.<br>";
}
#--]

#[--TRUE-RESULT
if(!\$y){
echo "2 - True Condition.<br>";
}
else{
echo "2 - False Condition.<br>";
}
#--]

//Logical operators and Comparison Operators together
\$a = 10;
\$b = 20;

#[--
// \$a == \$b - that means \$a is equal to \$b
// \$a !== \$b - that means \$a is not equal to \$b
// RESULT IS TRUE BECAUSE \$a and \$b ARE NOT EQUAL
if(\$a !== \$b){
echo "3 - True Condition.<br>";
}
else{
echo "3 - False Condition.<br>";
}
#--]
?>``````

&& and || Operator

The “&&” operator works similar to the “and” operator, and the “||” operator works similar to the “or” operator.

``````<?php
\$x = true;
\$x2 = true;
\$y = false;
\$z = false;

#[--TRUE-RESULT
if(\$x && \$x2){
echo "1 - True Condition.<br>";
}
else{
echo "1 - False Condition.<br>";
}
#--]

#[--FALSE-RESULT
if(\$x && \$y){
echo "2 - True Condition.<br>";
}
else{
echo "2 - False Condition.<br>";
}
#--]

#[--TRUE-RESULT
if(\$x || \$x2){
echo "3 - True Condition.<br>";
}
else{
echo "3 - False Condition.<br>";
}
#--]

#[--TRUE-RESULT
if(\$x || \$y){
echo "4 - True Condition.<br>";
}
else{
echo "4 - False Condition.<br>";
}
#--]

#[--FALSE-RESULT
if(\$y || \$z){
echo "5 - True Condition.<br>";
}
else{
echo "5 - False Condition.<br>";
}
#--]
?>``````
Browser Output
1 – True Condition.
2 – False Condition.
3 – True Condition.
4 – True Condition.
5 – False Condition.