Hi,

I have a php file that consists of two include files and I want to include it within another php file called main_page.php. Is there a limit to how many includes of php files you can have?

For example, would this be possible?

main_page.php
contains: include (page1.php)

page1.php
contains: include (page2.php)

page2.php
contains: include (page3.php)

page3.php (no includes)

Thanks,

Other than a minor risk of server over-load I can think of no reason why you should not do it.


If the same file is called once you should restructure or or include_once.

It's not a problem from a technical point of view, but I sometimes find it an issue as a developer, especially when I'm trying to make sense of what others have done on a project before me.

colbyt, is that the same as require_once? I thought it had to be loaded every time the page is refreshed?

frost, that's a good point, I think I will have to provide some comments to explain the different includes

Thanks,

I have just tried to include the file (which has many includes) in a main page and now there are alot of errors similar to this one:

PHP Code:

Call to a member function on a non-object in /folder/html/organisation_info.inc on line 200 


Which point to MySQL queries which should work, such as

$orgTypes =& $db->query("SELECT * FROM organisation WHERE organisationId = '$_GET[id]'");
checkDBError($orgTypes);

I realise this is a specific problem but why would the code work previously (before I included it within another file) and not work now?

Thanks,

Because this line use an Object.
The object has to be declared before, and it's obviously done in 1 of the include, so the part

PHP Code:

$orgTypes =& $db->query("..."); 


Which probably will send a query to the db (the & means that's the variable are passed by reference, rather than copy [ http://www.php.net/manual/en/languag...ences.pass.php ] )

This means that somewhere (over the rainbow ;-P ) in your includes, a new object is initialized, and used in that include.
Pretty messy, if you want my opinion...

Yeah it was definatly in the includes and it was abit messy so I decided to keep the code separate

I guess we can have as many includes in a script. When you use include more than once for the same file, you may get an error. Instead use include_once.

But the best way to do it is to use the PHP "magic" function, __autoload.
Read this page for more info.

http://us2.php.net/manual/en/language.oop5.autoload.php