Description:
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From manual page: http://www.php.net/ziparchive.addglob
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After creating a zip archive using addGlob, the zip appears empty in Windows explorer due to the directory path being prepended to the files.

Test script:
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$dir = '../temp';
$zip = new ZipArchive();
$zip -> open('../test.zip', ZipArchive::OVERWRITE);
$zip -> addGlob( $dir.'/*.txt', GLOB_NOSORT, array('remove_all_path' => TRUE) );
$zip -> close();

Expected result:
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The 'remove_all_path'=>TRUE flag should place the files in the root directory of the zip archive.

NOTE: a workaround is to add a space before each file path name using the 'add_path' flag like so:
array('add_path' => ' ','remove_all_path' => TRUE)

Actual result:
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Despite the 'remove_all_path'=>TRUE flag, the zipped files DO contain the '../temp' prefix, meaning that they cannot be read in Windows explorer.