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<?php declare(strict_types=1); trait UiHelperTrait { public function drupalGet(string $url): void { return; } } interface DrupalGetInterface { public function drupalGet(string $url): string; } class DrupalGetInterfaceTest implements DrupalGetInterface { use UiHelperTrait; } $test = new OverrideTraitMethodSignatureInChildClassTest(); var_dump($test->drupalGet('https://drupal.org'));
Output for git.master_jit, git.master
Fatal error: Declaration of DrupalGetInterfaceTest::drupalGet(string $url): void must be compatible with DrupalGetInterface::drupalGet(string $url): string in /in/f43o4 on line 7 Stack trace: #0 {main}
Process exited with code 255.

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