PHP phpinfo() Function is used to check information about PHP's configuration, Predefined Variables, extensions, the PHP version, server information, environment, HTTP headers, and the PHP License etc on a given system.
Syntax :
phpinfo(int $options= INFO_ALL)
Parameter,
$options: Optional. You can input below constants with one or more of value.
| Constant | Value | Description |
| INFO_GENERAL | 1 | It shows configuration line, php.ini location, build date, Web Server, System and more |
| INFO_CREDITS | 2 | It shows PHP Credits. Get from also phpcredits(). |
| INFO_CONFIGURATION | 4 | It shows current Local and Master values for PHP directives. Get from also ini_get(). |
| INFO_MODULES | 8 | It shows loaded modules and their respective settings. Get from also get_loaded_extensions(). |
| INFO_ENVIRONMENT | 16 | It shows environment Variable information. Get from also $_ENV. |
| INFO_VARIABLES | 32 | It shows all predefined variables from EGPCS (Environment, GET, POST, Cookie, Server). |
| INFO_LICENSE | 64 | It shows PHP License information. |
| INFO_ALL | -1 | It shows all of the above details. |
Return Values :
It returns true on success or false on failure.
Let's see below example to understand php phpinfo() Function in details.
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