PHP Variables

PHP

Variables in PHP start with a $ sign. No need to declare the type — PHP figures it out automatically.

Rules

Must start with $ followed by a letter or underscore
Case-sensitive: $name and $Name are different
No need to declare type (string, int, etc.)

Example — PHP

<?php
$name = "Rahul";
$age = 20;
$height = 5.8;
$isStudent = true;

echo "Name: " . $name . "<br>";
echo "Age: " . $age . "<br>";
echo "Height: " . $height . " feet<br>";
echo "Student: " . ($isStudent ? "Yes" : "No");
?>

Result

Name: Rahul
Age: 20
Height: 5.8 feet
Student: Yes

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