ThinkPHP Word添加水印

omposer require phpoffice/phpword --ignore-platform-reqs

$name = explode('.',$attachment->url);
                $t = $name[1];
                $p = $name[0];
                if($t=='docx'){
                    $PhpWord = IOFactory::load('/www/public'.$attachment->url);
                    $section = $PhpWord->getSection(0);
                    $header = $section->addHeader();
                    $header->addWatermark('/www/public/assets/img/water.png',array('height'=>1120/1.2,'width'=>790/1.2,'marginTop'=>-36,'marginLeft'=>-80,'posHorizontal'=>'absolute','posVertical'=>'absolute'));
                    if($t=='docx'){
                        $s = 'Word2007';
    
                    }else{
                        $s = 'Word2007';
                    }
                    $newp = $p.'w.'.$t;
                    $objWriter = IOFactory::createWriter($PhpWord,$s);
                    $objWriter->save('/www/public/'.$newp);
                }