PHP Fatal error: I'm trying to implement Form \ AbstractType in my Symfony2 application

Question

I get the following error:

Fatal error: Declaration of Bean\OauthServerBundle\Form\Type\AuthorizeFormType::buildForm() must be compatible with Symfony\Component\Form\FormTypeInterface::buildForm(Symfony\Component\Form\FormBuilderInterface $builder, array $options) in src/Bean/OauthServerBundle/Form/Type/AuthorizeFormType.php on line 25 

I don’t know why I get this error. AbstractType :: buildForm () accepts FormBuilderInterface, and Symfony2 implements FormBuilderInterface for FormBuilder.

Here is the contents of my source:

 <?php namespace Bean\OauthServerBundle\Form\Type; use Symfony\Component\Form\FormBuilder; use Symfony\Component\Form\AbstractType; class AuthorizeFormType extends AbstractType { public function buildForm(FormBuilder $builder, array $options) { /* some code ... */ } /* more code ... */ } 

Answer 1

FormBuilderInterface and Symfony2 implements FormBuilderInterface for FormBuilder.

This does not change the fact that buildForm must be declared as in the parent class and accept any object that implements FormBuilderInterface .

Answer 2

So, the code from the symfony book should look like this:

 namespace Bean\OauthServerBundle\Form\Type; use Symfony\Component\Form\FormBuilderInterface; use Symfony\Component\Form\AbstractType; class AuthorizeFormType extends AbstractType { public function buildForm(FormBuilderInterface $builder, array $options) { /* some code ... */ } /* more code ... */ } 

Is that what you mean?