为什么zend_form无法使用Firebird数据库中带有变音符号的记录填充输入？

 $form->addElement(
                          \'textarea\',
                          \'POD\',
                          array(
                            \'value\' => $this->ksiega[\'POD\'],
                            \'attribs\' => array( \'class\' => \'pod\'),
                          )
                        );
                $form->setElementDecorators(array(
                \'ViewHelper\',
                \'Errors\'
              ));

<textarea name=\"POD\" id=\"POD\" class=\"pod\" rows=\"24\" cols=\"80\"><?=$this->ksiega[\'POD\']?></textarea>

$elem = $form->getElement(\'POD\');
$elem->setValue($this->ksiega[\'POD\']);