Lesson 2.1: Variables
📖 Introduction to PHP
⏱️ 20 min
Variables are containers for storing data values. In PHP, variables start with the $ symbol.
Declaring Variables:
<?php
$name = "John";
$age = 25;
$height = 5.9;
echo "Name: " . $name;
echo "Age: " . $age;
?>Variable Naming Rules:
- Start with $ followed by a letter or underscore
- Can only contain alphanumeric characters and underscores (A-z, 0-9, _)
- Variable names are case-sensitive ($name ≠ $Name)
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