These modes determine when and where a PHP directive may or may not be set, and each directive within the manual refers to one of these modes. For example, some settings may be set within a PHP script using ini_set(), whereas others may require php.ini or httpd.conf.
For example, the
output_buffering setting
is INI_PERDIR therefore it may not be set using
ini_set(). However, the
display_errors directive is
INI_ALL therefore it may be set anywhere,
including with ini_set().
| Constants | Description |
|---|---|
INI_USER
(int)
|
Entry can be set in user scripts (like with ini_set()) or in the Windows registry. Entry can be set in .user.ini |
INI_PERDIR
(int)
|
Entry can be set in php.ini, .htaccess, httpd.conf or .user.ini |
INI_SYSTEM
(int)
|
Entry can be set in php.ini or httpd.conf |
INI_ALL
(int)
|
Entry can be set anywhere |