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<?php# Using Zend 1.11.5require_once('Zend/Form/Element/Text.php');$email = new Zend_Form_Element_Text('email');        $email->setLabel('Email address')              ->addFilter('StringToLower')              ->setRequired(true)              ->addValidator('NotEmpty')              ->addValidator('EmailAddress');// Hangs indefinitely unless I remove EmailAddress validator from $email:var_dump($email->isValid('some_user@blah.ca'));?>