wordpress - ZipArchive gives blank screen PHP -

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i enabled php_zip.dll in php.ini , shows in phpinfo, ziparchive enabled. next, here code using:

$zipname='exports.zip'; $zip=new ziparchive; $zip->open($zipname, ziparchive::create);

when code reaches point, screen goes blank. there no errors in error log. html supposed show, not. other unessential php commented out. using php 5.2.4 on wordpress 3.9.2 site.

i found solution finding in search engines. instead of using php's ziparchive, used command line winzip. looked this:

$cmd='"c:\winzip-directory\winzip32.exe" -a "c:/zip-directory/exports.zip" "c:/zip-directory"'; exec($cmd);

i still don't know caused problem php's ziparchive, though.


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