Loops and re-declaring classes

bazaarboy

Hi guys this will probably be obvious, but I can't think how to solve it!

I'm using TCPDF and the code for generating the PDF looks like:

class CUSTOM_1 extends TCPDF {
    // custom header etc
}

The problem is that I'd like to generate many PDF files in one script and I use a while loop, to go through my queue of documents that need to be generated.
Some documents need CUSTOM_1, CUSTOM_2 or other classes.

When a document is about to be generated, where the custom class has been used once before, then I get an error:

Fatal error: Cannot redeclare class CUSTOM_1 in...

How can I reset all CUSTOM class information so that when re-declared they work ok?

dagon

bazaarboy;10955440 wrote:
How can I reset all CUSTOM class information so that when re-declared they work ok?

You don't, you structure your code so they are not redeclared.

cahva

You should really read more about OOP as the main thing usually is that you can use the same code easily. In this particular case, if you need to set custom headers, create a method where you can create that. Something like this(this is not TCPDF related, only an example and very simplified).

$pdf = new My_pdf();
$pdf->set_header('some header');
$pdf->create();

In this case I would have a class that extends TCPDF and I would have a method set_header($param) where the header is set. If that code is in the loop, you would change the parameter sent to set_header in every iteration as you wish.

I havent used TCPDF in a while so I just threw that create() method of my hat as an example.

NogDog

Typical process is to put each class definition in a separate file. Then any code that needs to instantiate that class either does a [man]require_once[/man] of that file, or else you set up an [man]__autoload/man function to require class files as needed.