PHP Cheat Sheet

Basic Syntax

<?php echo "Hello"; ?>

Variables & Data Types

$str = "Hello";   // String
$int = 42;        // Integer
$float = 3.14;    // Float
$bool = true;     // Boolean
$arr = [1, 2, 3]; // Array

Common Functions

Function	Purpose
strlen($s)	String length
count($a)	Array length
isset($v)	Check if set
empty($v)	Check if empty
die()	Stop execution
include()	Include file

Superglobals

$_GET, $_POST, $_SESSION, $_COOKIE, $_SERVER, $_FILES

---