Google Drive API provides a way to get the MD5 checksum of uploaded files. This can be used to verify if files uploaded correctly. I’ve created a small Javascript program that uses the Google Drive API available here: Google Drive MD5 Fetcher. You’ll need to authorize access first, then put the name of the file in the search box and it will fetch MD5s from Google. You can right-click to view source and see how it works.
Here’s a basic script I made that uses PHP, cURL, and barcoding.com. It reads UPCs from csv files (or just a list) and sends a request to barcoding.com. Barcoding.com then returns an image with the barcode. Keep in mind barcoding.com is a free service and isn’t designed to be used in the way this script uses it, so please use it carefully.
<?php
$file = 'upcs.csv'; // Path to CSV file
$field = 0; //Column number of the UPC (0 if in the first column, 1 for the 2nd column, etc)
$output = 'C:\\upcs\\'; //Directory to save outputted UPCs to
$csvFile = fopen($file, "r"); //open the csv file for reading
while($data = fgetcsv($csvFile)) { //for each, add upc to array
if(strlen($data[$field]) === 12) { //prevent from adding data that isn't a 12 digit upc
$upcA[] = $data[$field];
}
}
fclose($csvFile);
function saveBarcode($url, $code) {
global $output;
$url = "http://www.barcoding.com".$url;
$ofile = "$output$code.png";
if(@$out = fopen($ofile, "x")) { // prevent problems when the file already exists
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "$url");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($ch, CURLOPT_FILE, $out);
curl_exec($ch);
curl_close($ch);
fclose($out);
}
}
function makeBarcode($code) { //generates barcode image from upc using barcoding.com
$url = "http://www.barcoding.com/upc/buildbarcode.asp?cpaint_function=BuildBarcode&cpaint_argument[]=$code&cpaint_argument[]=9&cpaint_argument[]=5&cpaint_response_type=TEXT";
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "$url");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
$url = curl_exec($ch);
curl_close($ch);
saveBarcode($url, $code);
}
foreach($upcA as $upc) {
makeBarcode($upc);
}
?>