set_include_path

(PHP 4 >= 4.3.0, PHP 5)

set_include_path - Sets the include_path configuration option

Описание

string set_include_path ( string new_include_path )

Sets the include_path configuration option for the duration of the script. Returns the old include_path on success or FALSE on failure.

Пример 1. set_include_path() example

// Works as of PHP 4.3.0
set_include_path('/inc');

// Works in all PHP versions
ini_set('include_path', '/inc');

Пример 2. Adding to the include path

Making use of the PATH_SEPARATOR constant, it is possible to extend the include path regardless of the operating system.

In this example we add /usr/lib/pear to the end of the existing include_path.

$path = '/usr/lib/pear';
set_include_path(get_include_path() . PATH_SEPARATOR . $path);

Смотрите также ini_set(), get_include_path(), restore_include_path(), and include().

Описание на ru2.php.net
Описание на php.ru