How can one ensure that a zip file with a .zm9 extension is correctly handled and unpacked with PHP?

To ensure that a zip file with a .zm9 extension is correctly handled and unpacked with PHP, you can use the ZipArchive class in PHP to extract the contents of the file. You can rename the file to have a .zip extension before extracting it to ensure compatibility with the ZipArchive class. 

$zipFile = 'file.zm9';
$zip = new ZipArchive;

if ($zip->open($zipFile) === TRUE) {
    $zip->extractTo('extracted_folder/');
    $zip->close();
    echo 'Zip file extracted successfully.';
} else {
    echo 'Failed to extract zip file.';
}

Keywords

PHP zip file .zm9 extension unpacking handling

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