What is the variable name in php

What is the variable name of php?

Variables are containers for storing information:

Examples

<?php
$x=5;
$y=6;
$z=$x+$y;
echo $z;
?>

PHP Variables

Just like algebra, PHP variables are available To save the value (x=5) and the expression (z=x y).

Variable names can be short (such as x and y) or more descriptive (such as carname, total_volume).

PHP variable rules:

Variables start with a $ symbol, followed by the name of the variable

Variable names must start with a letter or an underscore

Variable names cannot begin with a number

Variable names can only contain alphanumeric characters and underscores (A-z, 0-9, and _)

Variable names are case-sensitive ($y and $Y are two different variables)

Note: PHP variable names are case-sensitive!

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