PHPCodeChecker - PHPCodeChecker is a best-in-class service that enables developers and PHP programmers to write their code online and analyze it.
OnlinePHPFunctions - OnlinePHPFunctions is a powerful online code tester that lets you add PHP source code and view its output on your favorite web browser.
WritePHPOnline.Com - WritePHPOnline.Com is an online site that enables you to write code in PHP and view its output.
PHP Sandbox - PHP Sandbox is one of the major online sites that provides a Development Environment for PHP equipped with a Composer Package.
Paiza.io - Paiza.io allows you to write and run code in many languages.
Rapid PHP - Rapid PHP editor is the world's fastest and lightest PHP IDE for Windows with code intelligence and tools for PHP, HTML, CSS, and JavaScript, including PHP debugger, FTP/SFTP client, UTF-8 support and more.