What is self-increment and self-decrement in PHP basic syntax? How to use it?

The last article introduced you to "Variable references of PHP constants and variables". This article continues to introduce to you the self-increasing and self-decreasing PHP basic syntax. Let's learn together! ! !

What is self-increasing and self-decreasing: Self-increasing and self-decreasing means adding 1 to yourself and subtracting 1 to yourself

About self-increasing and self-decreasing Subtraction operator:

• $x Assign value first and then add

• $x-- Assign first and then subtract

• $x Add first and then assign

• --$x Subtract first Post-assignment

Code example, as shown below:

<?php 
//$x-- 先赋值后减
$x = 5;
$y = $x--;
echo $y;
?>

The running result is as follows

Second Code snippet:

<?php 
//--$x 先减后赋值
$x =5;
$y = --$x;
echo $y;
?>

The running result is as follows:

Recommended learning: "PHP Video Tutorial"

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