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PHP Cheat Sheet

Print-ready cheat sheet for PHP, organized for fast lookup, study, and desk-side use

Source
PHP Manual (php.net)
License
MIT
Updated
2026-03-27

Sample

What's in this cheat sheet

  • Basics
  • Variables & Types
  • Strings
  • Arrays
  • Functions
  • Classes & Objects
  • Error Handling
  • File I/O
  • Database
  • Common Functions

Hello World

<?php
echo "Hello, World!\n";
// PHP code must be inside <?php ... ?> tags

Run PHP

php script.php          # run a file
php -r 'echo "hi\n";'  # run inline code
php -S localhost:8000   # built-in dev server

Comments

// single-line comment
# also single-line
/* multi-line
   comment */

Download the full cheat sheet for all sections, formatted for print

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