PHP：在include中包含

Question

In dbc.php I have where the connection to the mysql db gets made, and all my functions is there.

dbc.php is included on all my files.

Now all functions are in dbc.php and i would like to sort out alittle. I was thinking about putting all form_*() functions to form_api.php, and then include it in dbc.php. But will this work? Can i just include inside a file i included? Or should i use require/include_once ?

help me out thank you

Answer 1

是的....这是完全允许的。

Answer 2

我建议您对库使用__autoload（）方法并将其放入类中。

Answer 3

It should work, just save the form_api.php file in the same folder as your dbc.php file and include it from it. As you probably know, include_once() has the same behaviour but includes a file just once, no matter how many times you try to include it, so it is perfectly OK to use include_once instead of include(). require() will stop the execution will a fatal error if the file can't be included for any reason.

Answer 4

You can use include() functions at included pages. So your first questions answer is YES .

And now 2. question. Actually , there is an different between include and include_once .

include("dbc.php");
include("dbc.php");
include("dbc.php");
// dbc.php will include 3 times .

include_once("dbc.php");
include_once("dbc.php");
include_once("dbc.php");
// dbc.php will include 1 time

So, i prefer include_once :)