WordPress : Allow zip files in media to upload

Since WordPress version 4.7.1 ot greater, its added some extra security check for mime types.
Just Add the follows code snippet in your active theme’s functions.php to achieve the above.

=========== Copy the following script===========

function modify_upload_mimes ( $mimes_types ) {
// add your extension to the mimes array as below
$mimes_types[‘zip’] = ‘application/zip’;
$mimes_types[‘gz’] = ‘application/x-gzip’;
return $mimes_types;
}
add_filter( ‘upload_mimes’, ‘modify_upload_mimes’, 99 );

function add_allow_upload_extension_exception( $types, $file, $filename, $mimes ) {
// Do basic extension validation and MIME mapping
$wp_filetype = wp_check_filetype( $filename, $mimes );
$ext = $wp_filetype[‘ext’];
$type = $wp_filetype[‘type’];
if( in_array( $ext, array( ‘zip’, ‘gz’ ) ) ) { // it allows zip files
$types[‘ext’] = $ext;
$types[‘type’] = $type;
}
return $types;
}
add_filter( ‘wp_check_filetype_and_ext’, ‘add_allow_upload_extension_exception’, 99, 4 );