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<?php class Example { protected $attributes = []; public string $email { get => $this->attributes['email']; set => $this->attributes['email'] = strtolower($value); } } $example = new Example; $example->email = 'should only appear once'; var_dump($example);
Output for git.master_jit, git.master
object(Example)#1 (2) { ["attributes":protected]=> array(1) { ["email"]=> string(23) "should only appear once" } ["email"]=> string(23) "should only appear once" }

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