Batch Upload

Make sure all these settings are correct as well:

• Check upload_tmp_dir in php.ini. This is directory where PHP stores temporary files while uploading.
• Check open_basedir in php.ini. If defined it limits PHP read/write rights to specified path and its subdirectories. Ensure that upload_tmp_dir is inside this path.
• Check post_max_size in php.ini. If you want to upload 20 Mbyte files, try something a little bigger, like post_max_size = 21M. This defines largest size of POST message which you are probably using during upload.
• Check upload_max_filesize in php.ini. This specifies biggest file that can be uploaded.
• Check memory_limit in php.ini. That’s the maximum amount of memory a script may consume. It’s quite obvious that it can’t be lower than upload size (to be honest I’m not quite sure about it-PHP is probably buffering while copying temporary files).

if you want to do a test you can try this, open the file mdocs-batch-upload.php and change starting at line 10:

if(isset($_FILES['mdocs-batch']) && strpos($_FILES['mdocs-batch']['type'],'zip') == false) {
		$string = '<h5>'.__('Please upload a zip file.','mdocs').'</h5>';
		$string .= '<h6>'.__('Output:','mdocs').'</h6>';
		foreach($_FILES['mdocs-batch'] as $index => $value) $string .=  $index.' ==> '.$value.'<br>';
		$string .= '</p>';
		mdocs_errors($string, 'error');
	} elseif(isset($_FILES['mdocs-batch']) && strpos($_FILES['mdocs-batch']['type'],'zip') >= 0) {
		if(!file_exists(sys_get_temp_dir().'/mdocs/')) mkdir(sys_get_temp_dir().'/mdocs/');
		$zip_result = mdocs_unzip($_FILES['mdocs-batch']['tmp_name'], sys_get_temp_dir());
		$do_zip = true;
	} elseif (isset($_POST['mdocs-batch-complete'])) {
		$do_complte = true;
	}

to this:

	/*
	if(isset($_FILES['mdocs-batch']) && strpos($_FILES['mdocs-batch']['type'],'zip') == false) {
		$string = '<h5>'.__('Please upload a zip file.','mdocs').'</h5>';
		$string .= '<h6>'.__('Output:','mdocs').'</h6>';
		foreach($_FILES['mdocs-batch'] as $index => $value) $string .=  $index.' ==> '.$value.'<br>';
		$string .= '</p>';
		mdocs_errors($string, 'error');
	} elseif(isset($_FILES['mdocs-batch']) && strpos($_FILES['mdocs-batch']['type'],'zip') >= 0) {
		if(!file_exists(sys_get_temp_dir().'/mdocs/')) mkdir(sys_get_temp_dir().'/mdocs/');
		$zip_result = mdocs_unzip($_FILES['mdocs-batch']['tmp_name'], sys_get_temp_dir());
		$do_zip = true;
	} elseif (isset($_POST['mdocs-batch-complete'])) {
		$do_complte = true;
	}
	*/
	if(!file_exists(sys_get_temp_dir().'/mdocs/')) mkdir(sys_get_temp_dir().'/mdocs/');
	$zip_result = mdocs_unzip($_FILES['mdocs-batch']['tmp_name'], sys_get_temp_dir());
	$do_zip = true;

I think your problem is this application/octet-stream. Your server does not recognize zip files.

The MIME types “text/plain” and “application/octet-stream” are termed ambiguous because they generally do not provide clear indications of which application or CLSID should be associated as the content handler…

…and defaulting to the final determined MIME type of “application/octet-stream.” Other types of files, such as .reg files, behave similarly.

What type of server are you running? Windows or Linux?

Consider adding the following lines to your apache configuration file:

AddType application/zip zip
AddType application/zip ZIP

ill test with chrome right now see if a get the same results.

just tested with chrome version Version 53.0.2785.143 (64-bit) on a mac no issue 🙁