StackOverflow2013

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POImproving class structure in PHP instead of using multiple inheritance
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copied!<p>I have a design problem where my classes are set up in such a way:</p> <pre><code>abstract class Advertiser abstract class AdvertiserCampaign | | | | class AdvUno extends Advertiser class AdvUnoCampaign extends AdvertiserCampaign class AdvDos extends Advertiser class AdvDosCampaign extends AdvertiserCampaign class AdvTre extends Advertiser class AdvTreCampaign extends AdvertiserCampaign </code></pre> <p>The problem is that <code>AdvUno</code> and <code>AdvUnoCampaign</code> both need a special authentication method that's not necessary for the others. Right now I've placed it in <code>AdvUno</code>, but again, it'll be needed by <code>AdvUnoCampaign</code> (and a bunch of other classes that are set up in this way).</p> <ul> <li>I can't make <code>AdvUnoCampaign</code> extend <code>AdvUno</code> since there's no multiple inheritance in PHP, but also because it's just generally not a good, clean design practice.</li> <li>If I make <code>AdvertiserCampaign</code> extend <code>Advertiser</code>, then all of the extending classes below (<code>AdvUnoCampaign</code>, <code>AdvDosCampaign</code>, etc) must implement a bunch of abstract methods that are of no concern to them, and which are already implemented in each of the <code>Advertiser</code> classes.</li> </ul> <p>In short, what's the best design practice in this sort of situation? I'd rather not just copy and paste the code into all of the <code>AdvOne</code> classes. Any help or advice would be appreciated. Thanks!</p>

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