How do I set PHP include

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How do I set PHP include_path?

There are at least 2 ways you can set your PHP include_path.

Edit your /etc/php.ini file. Inside that file is a directive section for "Paths and Directories." By default it is set to ".:/usr/local/lib/php". You can change that value to whatever you like or add to (or eliminate) the default like this:

include_path = .:/usr/local/lib/php:./include

The above must be entered all on one line, with no linebreaks. The above will cause php scripts to search for a directory named "include", and will look for it under the current directory of the running script in addition to the default, which is to first search the current directory and then search the /usr/local/lib/php directory (which is a system directory that is not writeable by you and is reserved for things like PEAR).

The format of the include_path variable is a list of directories separated with a colon. A "." (a period) in the include path means the current directory, and allows for relative includes. More information is available here.

Use the function ini_set(). For example if you wanted to set your PHP include_path to ".:../:./include:../include" then you would do this in your PHP code:

ini_set("include_path", ".:../:./include:../include");
You can also use ini_set() to affect other PHP settings like auto_prepend_file, auto_append_file, error_reporting, etc.

User-Contributed Notes

03-Mar-2004 18:17

Using ini_set("include_path"... is particularly useful if you want to
use something like PEAR, but your hosting provider does not have all the
packages installed that you want to take advantage of.  eg.  My hosting
provider does not include the SOAP package, so I just add the package
into a directory in my web space, and then add that directory to my
include path.

anonymous -at- example.com
18-Feb-2008 06:32

Setting include path also helps to make keep your servers clear of
duplicates if you use the same libraries for different projects on the
same server. Just put the library (for example ADOdb is a popular
database abstraction library) into a central folder and you can use it
in multiple projects without having to worry about directory structure.

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