Question

I am having a problem with detecting if an interface class is already declared

Error reported is:

Fatal error: Cannot redeclare class iSerializable in /public_html/application/AppCode/iSerializable.interface.php on line 3

line1: //nothing here
line2:  require_once($filename);    
line3:  interface iSerializable
        {
            public function writeXML(DomDocument $doc, DomElement $element);
        }

If this was a normal class, then i would have used this example function given below

if(class_exists('iSerializable') != true)
{
   //put class iSerializable here
}

but here, this class is an Interface, how can i check if this interface is already declared?

Can any one kindly suggest me a proper way or solution to this problem?

Answer 1

You can use interface_exists()