How to load php code dynamically and check if classes implement interface

Question

I'm loading a class dynamically in PHP. This file and class name are gotten out of the database. This file must contain a class and a method. I tried to solve it with an interface, but I don't really get it how I could do it the most beautiful way.

What would be your suggestions?

Community · Accepted Answer · 2023-11-17 20:42:18Z

5

Use class_exists() to determine if a class has been defined, method_exists() to determine if a class has a method and instanceof to determine if a class implements an interface.

edited Nov 17, 2023 at 20:42

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answered Mar 7, 2012 at 15:24

Alex Howansky

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Comments

hohner · Accepted Answer · 2013-07-24 21:04:56Z

2

To check whether a class has been defined, use:

   if (class_exists('ClassName')) {
      // Do something
   }

To check whether a method/function exists, use:

   if (method_exists('methodName')) {
      // Do something
   }

edited Jul 24, 2013 at 21:04

answered Mar 7, 2012 at 15:26

hohner

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1 Comment

nickb Over a year ago

You mean if a class has been defined, not instantiated. An instantiated class yields an object.

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