Increment & Decrement Operators in PHP

Increment and decrement operators in PHP increment and decrement value by 1.  There are 4 types of increment and decrement operators.

• Pre-Increment:  ++$variable
• Post-Increment:  $variable++
• Pre-Decrement:  –$variable
• Post-Decrement:  $variable–

Example for increment and decrement operators is given below.

<?php

$pre_increment =  10;
$post_increment =  10;
$pre_decrement =  10;
$post_decrement =  10;

//Pre-Increment: 11
echo 'Pre-Increment:  '.++$pre_increment. '<br />';
 
//Post-Increment: 10
echo 'Post-Increment:  '.$post_increment++. '<br />';

//After Post-Increment: 11
echo 'After Post-Increment:  '.$post_increment. '<br />';

//Pre-decrement: 9
echo 'Pre-decrement:  '.--$pre_decrement. '<br />';

//Post-decrement: 10
echo 'Post-decrement:  '.$post_decrement--. '<br />';

//After Post-decrement: 9
echo 'After Post-decrement:  '.$post_decrement;

?>

You May Also Like:

How to Increment and Decrement Counter on Button Click in Javascript Arithmetic Operators in PHP Logical Operators in PHP with Example Comparison Operators in PHP Comparison Operators