How to Get PHP Configuration Information using phpinfo()?

The phpinfo() function in PHP gives us the details about the PHP version and configuration installed in our system. To check the Configurations and Versions, a simple PHP script can be used. The script consists of a PHP function called “phpinfo()” which outputs information about PHP’s configuration. The phpinfo() function is also useful in the debugging process.

This function generally outputs a large amount of information, such as:  

• Information about PHP compilation options and extensions.
• PHP version.
• Server information and environment (if compiled as a module).
• PHP environment.
• OS version information, paths, master, and local values of configuration options.
• HTTP headers.
• PHP license.

Syntax

bool phpinfo ([ int $what = INFO_ALL ] )

Parameters

$what: It is an optional parameter that can be used to display specific information. 

It can take the following values:  

• INFO_GENERAL:It is used to display the configuration line, php.ini location, build date, Web Server, System and more. 
• INFO_CREDITS:It is used to display PHP Credits. 
• INFO_CONFIGURATION: It is used to display current, local and Master values for PHP directives. 
• INFO_MODULES: It is used to display loaded modules and their respective settings. 
• INFO_ENVIRONMENT:It is used to display the environment variable information. 
• INFO_VARIABLES:It shows all predefined variables from EGPCS (Environment, GET, POST, Cookie, Server).  
• INFO_LICENSE:It is used to display PHP License information.  
• INFO_ALL:It shows all of the above information.  

Return Value

The phpinfo() function return a boolean value, i.e. it returns true on success and false on failure.

Display Complete PHP Configuration Information

To display the complete information on the PHP version, configurations, environment details etc. the phpinfo() function should be executed in the following way: 

<?php 
phpinfo(); 
?> 

Output: 

Note: The phpinfo() function display the output as a plain text instead of HTML when using the CLI mode.

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Article Tags :

• PHP
• Web Technologies
• PHP-function
• PHP-Questions