(PHP 4, PHP 5)
phpinfo — Outputs information about PHP's configuration
$what= INFO_ALL ] )
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.
Because every system is setup differently, phpinfo() is commonly used to check configuration settings and for available predefined variables on a given system.
phpinfo() is also a valuable debugging tool as it contains all EGPCS (Environment, GET, POST, Cookie, Server) data.
The output may be customized by passing one or more of the following constants bitwise values summed together in the optional
whatparameter. One can also combine the respective constants or bitwise values together with the or operator.
phpinfo() options Name (constant) Value Description INFO_GENERAL 1 The configuration line, php.ini location, build date, Web Server, System and more. INFO_CREDITS 2 PHP Credits. See also phpcredits(). INFO_CONFIGURATION 4 Current Local and Master values for PHP directives. See also ini_get(). INFO_MODULES 8 Loaded modules and their respective settings. See also get_loaded_extensions(). INFO_ENVIRONMENT 16 Environment Variable information that's also available in $_ENV. INFO_VARIABLES 32 Shows all predefined variables from EGPCS (Environment, GET, POST, Cookie, Server). INFO_LICENSE 64 PHP License information. See also the » license FAQ. INFO_ALL -1 Shows all of the above.
TRUE on success or
FALSE on failure.
|5.2.2||The "Loaded Configuration File" information was added, when before only "Configuration File (php.ini) Path" existed.|
Example #1 phpinfo() Example
// Show all information, defaults to INFO_ALL
// Show just the module information.
// phpinfo(8) yields identical results.
Parts of the information displayed are disabled when the expose_php configuration setting is set to off. This includes the PHP and Zend logos, and the credits.
phpinfo() outputs plain text instead of HTML when using the CLI mode.
- phpversion() - Gets the current PHP version
- phpcredits() - Prints out the credits for PHP
- php_logo_guid() - Gets the logo guid
- ini_get() - Gets the value of a configuration option
- ini_set() - Sets the value of a configuration option
- get_loaded_extensions() - Returns an array with the names of all modules compiled and loaded
- Predefined Variables