该程序正在使用Zend_Pdf创建PDF附件并加载PDF文件。我知道Zend_Pdf只能使用等于或低于1.4版本的PDF文件。
所有文件都是1.3版本。创建了五个pdf附件，并正确地附加了它们，但是有一个文件在加载时产生了错误。我不知道是什么原因和如何解决它:
错误1:当文件降级到1.3版本
An error occurred
Application error
Exception information:
Message: Outline childs load error.
Stack trace:
#0 C:'WebSites'Web_Applications'workstudy'library'Zend'Pdf'Outline'Loaded.php(345): Zend_Pdf_Outline_Loaded->__construct(Object(Zend_Pdf_Element_Reference), Object(SplObjectStorage))
#1 C:'WebSites'Web_Applications'workstudy'library'Zend'Pdf'Outline'Loaded.php(345): Zend_Pdf_Outline_Loaded->__construct(Object(Zend_Pdf_Element_Reference), Object(SplObjectStorage))
#2 C:'WebSites'Web_Applications'workstudy'library'Zend'Pdf'Outline'Loaded.php(345): Zend_Pdf_Outline_Loaded->__construct(Object(Zend_Pdf_Element_Reference), Object(SplObjectStorage))
#3 C:'WebSites'Web_Applications'workstudy'library'Zend'Pdf'Outline'Loaded.php(345): Zend_Pdf_Outline_Loaded->__construct(Object(Zend_Pdf_Element_Reference), Object(SplObjectStorage))
#4 C:'WebSites'Web_Applications'workstudy'library'Zend'Pdf'Outline'Loaded.php(345): Zend_Pdf_Outline_Loaded->__construct(Object(Zend_Pdf_Element_Reference), Object(SplObjectStorage))
#5 C:'WebSites'Web_Applications'workstudy'library'Zend'Pdf'Outline'Loaded.php(345): Zend_Pdf_Outline_Loaded->__construct(Object(Zend_Pdf_Element_Reference), Object(SplObjectStorage))
#6 C:'WebSites'Web_Applications'workstudy'library'Zend'Pdf'Outline'Loaded.php(345): Zend_Pdf_Outline_Loaded->__construct(Object(Zend_Pdf_Element_Reference), Object(SplObjectStorage))
#7 C:'WebSites'Web_Applications'workstudy'library'Zend'Pdf'Outline'Loaded.php(345): Zend_Pdf_Outline_Loaded->__construct(Object(Zend_Pdf_Element_Reference), Object(SplObjectStorage))
#8 C:'WebSites'Web_Applications'workstudy'library'Zend'Pdf.php(549): Zend_Pdf_Outline_Loaded->__construct(Object(Zend_Pdf_Element_Reference))
#9 C:'WebSites'Web_Applications'workstudy'library'Zend'Pdf.php(317): Zend_Pdf->_loadOutlines(Object(Zend_Pdf_Element_Reference))
#10 C:'WebSites'Web_Applications'workstudy'library'Zend'Pdf.php(253): Zend_Pdf->__construct('C:'WebSites'Web...', NULL, true)
#11 C:'WebSites'Web_Applications'workstudy'application'modules'default'models'Students.php(609): Zend_Pdf::load('C:'WebSites'Web...')
#12 C:'WebSites'Web_Applications'workstudy'application'modules'default'controllers'StudentsController.php(262): Model_Students->generateDocuments()
#13 C:'WebSites'Web_Applications'workstudy'library'Zend'Controller'Action.php(513): StudentsController->quizCompletedAction()
#14 C:'WebSites'Web_Applications'workstudy'library'Zend'Controller'Dispatcher'Standard.php(289): Zend_Controller_Action->dispatch('quizCompletedAc...')
#15 C:'WebSites'Web_Applications'workstudy'library'Zend'Controller'Front.php(954): Zend_Controller_Dispatcher_Standard->dispatch(Object(Zend_Controller_Request_Http), Object(Zend_Controller_Response_Http))
#16 C:'WebSites'Web_Applications'workstudy'library'Zend'Application'Bootstrap'Bootstrap.php(97): Zend_Controller_Front->dispatch()
#17 C:'WebSites'Web_Applications'workstudy'library'Zend'Application.php(366): Zend_Application_Bootstrap_Bootstrap->run()
#18 C:'WebSites'RSS'Workstudy'index.php(26): Zend_Application->run()
**错误2:当文件没有正确降级到较低版本时可能会发生**
An error occurred
Application error
Exception information:
Message: Incorrect reference to the object
Stack trace:
#0 C:'WebSites'Web_Applications'workstudy'library'Zend'Pdf'Element'Reference.php(128): Zend_Pdf_Element_Reference->_dereference()
#1 C:'WebSites'Web_Applications'workstudy'library'Zend'Pdf.php(529): Zend_Pdf_Element_Reference->getType()
#2 C:'WebSites'Web_Applications'workstudy'library'Zend'Pdf.php(317): Zend_Pdf->_loadOutlines(Object(Zend_Pdf_Element_Reference))
#3 C:'WebSites'Web_Applications'workstudy'library'Zend'Pdf.php(253): Zend_Pdf->__construct('C:'WebSites'Web...', NULL, true)
#4 C:'WebSites'Web_Applications'workstudy'application'modules'default'models'Students.php(597): Zend_Pdf::load('C:'WebSites'Web...')
#5 C:'WebSites'Web_Applications'workstudy'application'modules'default'controllers'StudentsController.php(262): Model_Students->generateDocuments()
#6 C:'WebSites'Web_Applications'workstudy'library'Zend'Controller'Action.php(513): StudentsController->quizCompletedAction()
#7 C:'WebSites'Web_Applications'workstudy'library'Zend'Controller'Dispatcher'Standard.php(289): Zend_Controller_Action->dispatch('quizCompletedAc...')
#8 C:'WebSites'Web_Applications'workstudy'library'Zend'Controller'Front.php(954): Zend_Controller_Dispatcher_Standard->dispatch(Object(Zend_Controller_Request_Http), Object(Zend_Controller_Response_Http))
#9 C:'WebSites'Web_Applications'workstudy'library'Zend'Application'Bootstrap'Bootstrap.php(97): Zend_Controller_Front->dispatch()
#10 C:'WebSites'Web_Applications'workstudy'library'Zend'Application.php(366): Zend_Application_Bootstrap_Bootstrap->run()
#11 C:'WebSites'RSS'Workstudy'index.php(26): Zend_Application->run()
#12 {main}
...
$mail = new Zend_Mail();
$mail->setFrom(Zend_Registry::get('config')->app->contact->email);
$mail->addTo($this->getUscEmail(), $this->getFirstName().' '.$this->getLastName());
$mail->addCc(Zend_Registry::get('config')->app->contact->email, 'SOWK FWS');
$mail->setSubject('Workstudy Documentation - '.$this->getFirstName().' '.$this->getLastName());
$content = '......text......';
$mail->setBodyText(strip_tags($content));
$mail->setBodyHtml($content);
...
$file = Zend_Registry::get('config')->app->pdf_path."Foundation Year Students.pdf"; //load pdf from string
$pdf = Zend_Pdf::load($file);
$at1 = $mail->createAttachment($pdf->render());
$at1->filename = "Foundation Year Students steve.pdf";
$at1->type = 'application/pdf';
...
另一种附加相同文件的方法解决了这个问题:
$file = Zend_Registry::get('config')->app->pdf_path."Foundation Year Students-Instructions.pdf"; //load pdf from string
$content = file_get_contents($file); // e.g. ("attachment/abc.pdf")
$attachment = new Zend_Mime_Part($content);
$attachment->type = 'application/pdf';
$attachment->disposition = Zend_Mime::DISPOSITION_ATTACHMENT;
$attachment->encoding = Zend_Mime::ENCODING_BASE64;
$attachment->filename = 'Foundation Year Students-Instructions.pdf'; // name of file
$mail->addAttachment($attachment);