PHP Variables

Variables start with a dollar sign. You do not declare a type: PHP works it out from the value.

ExamplePHP

<?php
$name = "Ada";
$age = 36;
$height = 1.68;
$student = false;

echo "$name is $age years old\n";
echo "Height: $height\n";
var_dump($student);
var_dump($age);

$age = "now a string";
var_dump($age);

const YEAR = 2026;
echo YEAR . "\n";

Output

Ada is 36 years old
Height: 1.68
bool(false)
int(36)
string(12) "now a string"
2026

Quick check

How does a PHP variable name begin?

With $With @With a type

Finish the quick check (and any code exercise) to complete this lesson, or mark it done yourself.

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