INI function of PHP: ini_get

The value of an ini_get (PHP4, PHP5) configuration option is the value of the environment variable in php. ini. the basic syntax is stringini_get (stringvarname. Return value # success is the string that returns the configuration option value, and null is returned for the null value. If the configuration option does not exist, FALSE is returned. "/>

Ini_get (PHP 4, PHP 5)

Obtains the value of a configuration option.

Is to obtain the value of the environment variable in php. ini.

Basic syntax

String ini_get (string varname)

Function parameters

Varname # Name of the configuration option.

Return value

# Success is a string that returns the configuration option value. if the value is null, an empty string is returned. If the configuration option does not exist, FALSE is returned.

# Note: If the returned value is Boolean, it is 0 or 1.

Case study

For example, the php. ini file contains the following settings:

Register_globals = Off

Post_max_size = 8 M

The PHP part can be obtained as follows:

Echo 'display _ errors = '. ini_get ('display _ errors'). "\ n ";
Echo 'register _ globals = '. ini_get ('register _ globals'). "\ n ";
Echo 'post _ max_size = '. ini_get ('post _ max_size'). "\ n ";
Echo 'post _ max_size + 1 = '. (ini_get ('post _ max_size') + 1). "\ n ";
Echo 'post _ max_size in bytes = '. return_bytes (ini_get ('post _ max_size '));
?>

If you want to obtain the variable value in the entire php. ini file, use the ini_get enhancement function ini_get_all ()

The ini_get_all () function returns the entire php environment variable in the form of an array.

Of course, if you just want to know the php configuration information
Phpinfo ();
?>
More convenient.