... PHP 3 <= 3.0.18, PHP 4 >= 4.0.0) phpinfo -- Outputs lots of PHP information . ... This includes information about PHP compilation options and extensions, the PHP version, server information and environment (if compiled as a module), the PHP environment, OS version information, paths, master and local values of configuration options, HTTP headers, and the PHP License. ... Also, phpinfo() is a valuable debugging tool as it contains all EGPCS (Environment, GET, POST, Cookie, Server) data. ... Value . ...