phpinfo
(PHP 4, PHP 5, PHP 7, PHP 8)
phpinfo — Outputs information about PHP's configuration
Description
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.
Parameters
flags-
The output may be customized by passing one or more of the
following constants bitwise values summed
together in the optional flags parameter.
One can also combine the respective constants or bitwise values
together with the bitwise 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.
|
Return Values
Always returns true.
Examples
Example #1 phpinfo() Example
<?php
// Show all information, defaults to INFO_ALL
phpinfo();
// Show just the module information.
// phpinfo(8) yields identical results.
phpinfo(INFO_MODULES);
?>
Notes
Note:
In versions of PHP before 5.5, 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.
Note:
phpinfo() outputs plain text instead of HTML when
using the CLI mode.
phpcredits
PHP Options/Info Functions