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POPHP OOP Architectural Issue
 

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    <p>This question may be obvious to some, but I am just beginning to scratch the surface of multi-tier architecture with web applications, particularly with PHP. I have a library containing several objects and it is expanding quickly. I always try to think in terms of re-useability and break my projects down into small, reusable, and loosely coupled components so that I am not only creating the project but I am also creating the parts for future projects. I am trying to design a sort of package management system so that I can stop using the absolute paths within include statements for objects. I would like to have a single file containing includes to every class file within my library. Along with the includes, I want to add a class with a "singleton" pattern that will allow me to grab instances of every object that I have in the library on demand. I plan to create a static getter for each object that returns a reference to a new instance. Basically, something like this...</p> <pre><code>include('classa.php'); include('classb.php'); include('classc.php'); class pacman{ private static $instance_stack; public static function GetPackage($strPackage){ if(!self::$instance_stack){ self::$instance_stack['classa']=new ClassA(); self::$instance_stack['classb']=new ClassB(); self::$instance_stack['classc']=new ClassC(); } if(array_key_exists(strtolower($strPackage),self::$instance_stack)){ return self::$instance_stack[strtolower($strPackage)]; } else{ return false; } } } </code></pre> <p>Then if I want to get class a...</p> <pre><code>include('pacman.php'); $ClassA = pacman::GetPackage('classa'); </code></pre> <p>I realize that this is a very rudimentary implementation. My example just covers the bare minimum. My problem isn't implementing this; rather, it is a question of whether or not hundreds of uninstantiated classes from the includes will have a noticeable effect on performance. If so, does anyone know of a workaround? I can't tell you how hard it is to keep track of the relative paths of hundreds of classes all sorted into directors by content.</p>
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    1. USAndrew Rhyne
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    1. CO[In Yoda voice] Before you can reuse, you must first use. Preoccupation with needs of future projects oft to failure of present project leads.
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    2. COThere is no preoccupation. Why would I take 2 hours to creAte a project specific component when I could take 2:30 and creat a generic and reusable component. Long term and short, it makes more sense. I'd rather have a single generic function being used in 500 places with polymorphism than 500 variations scattered through the code base. You want to talk about a nightmare
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