8.22. Reading Configuration Variables
Problem
You want to get the value of a PHP configuration setting.
Solution
Use ini_get( )
:
// find out the include path: $include_path = ini_get('include_path');
Discussion
To get all configuration variable values in one step, call
ini_get_all( )
. It returns the variables in an
associative array, and each array element
is itself an associative array. The second array has three elements:
a global value for the setting, a local value, and an access code:
// put all configuration variables in an associative array $vars = ini_get_all( ); print_r($vars['include_path']); Array ( [global_value] => .:/usr/local/lib/php/ [local_value] => .:/usr/local/lib/php/ [access] => 7 )
The global_value
is the value set from the
php.ini file; the local_value
is adjusted to account for any changes made in the web
server’s configuration file, any relevant
.htaccess files, and the current script. The
value of access
is a numeric constant representing
the places where this value can be altered. Table 8-3 explains the values for
access
. Note that the name
access
is a little misleading in this respect, as
the setting’s value can always be checked, but not
adjusted.
Table 8-3. Access values
Value |
PHP constant |
Meaning |
---|---|---|
|
|
Any script, using |
|
|
Directory level, using .htaccess |
|
|
System level, using php.ini or httpd.conf |
|
|
Everywhere: scripts, directories, and the system |
A value ...
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