php用openoffice轉換csv為pdf亂碼,請教如何解決

php用openoffice轉換csv為pdf亂碼,請問怎麼解決?
開啟openoffice選好編碼,能完成轉換,沒有亂碼,但是用php就是亂碼了,初步確定是沒設定編碼,請問在php中如何設定編碼,php代碼如下....

PHP code

Bridge_GetStruct("com.sun.star.beans.PropertyValue");    $oStruct->Name = $name;    $oStruct->Value = $value;    return $oStruct;}function word2pdf($doc_url, $output_url){    $fdoc_url = "file:///" . $doc_url;    $foutput_url = "file:///" . $output_url;    $osm = new COM("com.sun.star.ServiceManager") or die ("Please be sure that OpenOffice.org is installed.n");      $args = array(MakePropertyValue("Hidden",true,$osm));    $oDesktop = $osm->createInstance("com.sun.star.frame.Desktop");    $oWriterDoc = $oDesktop->loadComponentFromURL($fdoc_url,"_blank", 0, $args);    $export_args = array(MakePropertyValue("FilterName","writer_pdf_Export",$osm));    $oWriterDoc->storeToURL($foutput_url,$export_args);    $oWriterDoc->close(true);}$output_dir = "F:/ComsenzEXP/wwwroot/";$doc_file = "F:/ComsenzEXP/wwwroot/11.csv";$pdf_file = "513.pdf";$output_file = $output_dir . $pdf_file;if(!file_exists($output_file)){word2pdf($doc_file,$output_file);}?> 

------解決方案--------------------
你不是 COM 嗎？那你看看 com.sun.star.ServiceManager 是否提供了設定編碼的方法就是了

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