PHP实现WORD转PDF LINUX下PHP程序实现WORD文件转化为PDF文件的方法

<?php
set_time_limit(0);
function MakePropertyValue($name,$value,$osm){
$oStruct = $osm->Bridge_GetStruct("com.sun.star.beans.PropertyValue");
$oStruct->Name = $name;
$oStruct->Value = $value;
return $oStruct;
}
function word2pdf($doc_url, $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 = $oDesktop->loadComponentFromURL($doc_url,"_blank", 0, $args);
$export_args = array(MakePropertyValue ("FilterName","writer_pdf_Export",$osm));
$oWriterDoc->storeToURL($output_url,$export_args);
$oWriterDoc->close(true);
}
$output_dir = "D:/LightTPD/htdocs/";
$doc_file = "D:/LightTPD/htdocs/2.doc";
$pdf_file = "2.pdf";
$output_file = $output_dir . $pdf_file;
$doc_file = "file:///" . $doc_file;
$output_file = "file:///" . $output_file;
word2pdf($doc_file,$output_file);
?>