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Question about autoloading classes & how to deal with them if they don't exist


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This message is targeted at john lebensold, but any answers are welcome :)


I have an application I'm writing, & would like to give the option for customization down the road, but also have it upgradable to version 2.0.. 3.0.. 4.0 in the future without having to edit the main files at the time of upgrade to keep customizations. I have created on one, I have a Cms class, & have made a "customCms extends Cms Class" file, but don't necessarily want to write a blank file for every class so that down the road I can possibly customize it (mainly because when I deploy the new version I don't want to chance overwriting the end programers customizations if I don'[t delete the custom file before packaging). I have this code, but it doesn't do that, it will error if the file is not found. The autoloader works, but the "$Cms = new Cms" doesn't, it errors. Is there a way to load a class only if it exists?


the code I'm using is:


function __autoload($className)


if(file_exists($filename = str_replace('\\', '/' , $className) . '.php')){

require_once $filename;


return FALSE;




& this I believe is working, if it doesn't find the file it returns false.


//create cms object

if(!$this->Cms = new \enterprize\controllers\customCms()){

$this->Cms = new \enterprize\controllers\Cms();



but this part is not working, even tho I have the if(), it's erroring while it's trying to create $Cms.

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