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@ 2023-08-11T09:45:47Z

<?php

interface FormStateInterface {}
class FormState implements FormStateInterface {}
class Config {}

class ConfigFormBase {
  public function submitForm(array &$form, FormStateInterface $form_state) {
      var_dump(method_exists($this, 'mapFormValuesToConfig'));
  }
}

trait ValidatableConfigFormTrait {
  abstract protected static function mapFormValuesToConfig(FormStateInterface $form_state, Config $config): void;
}

class MyForm extends ConfigFormBase {
    use ValidatableConfigFormTrait;
    protected static function mapFormValuesToConfig(FormStateInterface $form_state, Config $config): void {
        // without this, PHP will complain! 👍
    }
}

class SubMyForm extends MyForm {}

$form = [];
(new MyForm())->submitForm($form, new FormState());
(new SubMyForm())->submitForm($form, new FormState());

Output for git.master: /bin/php-git-master: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-git-master) /bin/php-git-master: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-git-master)
Process exited with code 1.
Output for git.master_jit, rfc.property-hooks: bool(true) bool(true)

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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