How can COM classes in PHP be effectively used for converting docx files to PDF without causing memory leaks or unresolved processes?

When working with COM classes in PHP to convert docx files to PDF, it is important to properly release COM objects to prevent memory leaks and unresolved processes. To do this, make sure to unset the COM object after using it to free up memory and resources. 

$word = new COM("Word.Application");
$word->Documents->Open("path/to/input.docx");
$word->ActiveDocument->SaveAs("path/to/output.pdf", 17);
$word->Quit();
unset($word);

Keywords

COM classes PHP docx files PDF conversion memory leaks

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