"php -i" - Display Configuration Information

PHP Modules Tutorials - Herong's Tutorial Examples

∟"php -i" - Display Configuration Information

This section provides a tutorial example on how to display configuration information from the PHP runtime environment using the 'php -i' command or the phpinfo() function.

If you want to know configuration information of the PHP runtime environment, you run the "php" command with the "-i" option. It will run the phpinfo() function to display the runtime environment information and configuration directives.

Here is an example on my Windows computer:

herong> /php/php -i 

phpinfo()
PHP Version => 7.3.0

System => Windows NT Local 6.1 build 7601 (Windows 7 Professional ...
Build Date => Dec  6 2018 01:48:44
Compiler => MSVC15 (Visual C++ 2017)
Architecture => x64
Configure Command => cscript /nologo configure.js  "--enable-snaps...
Server API => Command Line Interface
Virtual Directory Support => enabled
Configuration File (php.ini) Path => C:\windows
Loaded Configuration File => (none)
Scan this dir for additional .ini files => (none)
Additional .ini files parsed => (none)
PHP API => 20180731
PHP Extension => 20180731
Zend Extension => 320180731
Zend Extension Build => API320180731,TS,VC15
PHP Extension Build => API20180731,TS,VC15
Debug Build => no
Thread Safety => enabled
Zend Signal Handling => disabled
Zend Memory Manager => enabled
Zend Multibyte Support => disabled
IPv6 Support => enabled
DTrace Support => disabled

...

Here is an example on my macOS computer:

herong$ php -i 

phpinfo()
PHP Version => 5.6.30

System => Darwin MyMac.local 16.7.0 Darwin Kernel Version 16.7.0: ...
Build Date => Oct 29 2017 20:13:12
Configure Command =>  '/Library/Caches/com.apple.xbs/Binaries/apache_...

Server API => Command Line Interface
Virtual Directory Support => disabled
Configuration File (php.ini) Path => /etc
Loaded Configuration File => /etc/php.ini
Scan this dir for additional .ini files => (none)
Additional .ini files parsed => (none)
PHP API => 20131106
PHP Extension => 20131226
Zend Extension => 220131226
Zend Extension Build => API220131226,NTS
PHP Extension Build => API20131226,NTS
Debug Build => no
Thread Safety => disabled
Zend Signal Handling => disabled
Zend Memory Manager => enabled
Zend Multibyte Support => provided by mbstring
IPv6 Support => enabled
DTrace Support => disabled

...

After displaying the runtime generic information, the "php -i" command displays configuration directives of all loaded modules, including the "core" module. For each directive, it displays 2 values:

Master Value - Directive value specified globally on all runtime instances. A master value is provided by the "configure" command, the php.ini file, or the httpd.conf file.
Local Value - Directive value specified locally on an runtime running a specific PHP script. A local value is provided by the .user.ini file, the .htaccess file, or a set_ini() call.

Here is an example on my macOS computer:

herong$ php -i 

...

Configuration
...

calendar

Calendar support => enabled

Core

PHP Version => 5.6.30

Directive => Local Value => Master Value
allow_url_fopen => On => On
allow_url_include => Off => Off
always_populate_raw_post_data => 0 => 0
asp_tags => Off => Off
auto_append_file => no value => no value
auto_globals_jit => On => On
... 

mysqli

MysqlI Support => enabled
Client API library version => mysqlnd 5.0.11-dev - 20120503 - $Id$
Active Persistent Links => 0

Directive => Local Value => Master Value
mysqli.allow_local_infile => On => On
mysqli.allow_persistent => On => On
mysqli.default_host => 127.0.0.1 => 127.0.0.1
mysqli.default_port => 3306 => 3306
mysqli.default_pw => test => test
mysqli.default_socket => /var/mysql/mysql.sock => /var/mysql/mysql.sock
mysqli.default_user => test => test
mysqli.max_links => Unlimited => Unlimited
mysqli.max_persistent => Unlimited => Unlimited
mysqli.reconnect => Off => Off
mysqli.rollback_on_cached_plink => Off => Off

...

If you are running PHP scripts on a Web server, you can call the phpinfo() function in a script to display the same information as the "php -i" command.