Outputs a large amount of information about the current state of PHP. 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.
The output may be customized by passing one or more of the following values sumed together in the optional parameter what (one can also combine them together with the or operator.
INFO_GENERAL
INFO_CREDITS
INFO_CONFIGURATION
INFO_MODULES
INFO_ENVIRONMENT
INFO_VARIABLES
INFO_LICENSE
INFO_ALL
See also phpversion(), phpcredits(), php_logo_guid()