How to read barcode from uploaded file for barcode reader API in PHP using PDF.co Web API

How to read barcode from uploaded file for barcode reader API in PHP: How To Tutorial

Every ByteScout tool contains example PHP source codes that you can find here or in the folder with installed ByteScout product. PDF.co Web API helps with barcode reader API in PHP. PDF.co Web API is the flexible Web API that includes full set of functions from e-signature requests to data extraction, OCR, images recognition, pdf splitting and pdf splitting. Can also generate barcodes and read barcodes from images, scans and pdf.

The SDK samples like this one below explain how to quickly make your application do barcode reader API in PHP with the help of PDF.co Web API. This PHP sample code should be copied and pasted into your project. After doing this just compile your project and click Run. Test PHP sample code examples whether they respond your needs and requirements for the project.

Our website provides free trial version of PDF.co Web API that includes source code samples to help with your PHP project.

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read-barcode.php
      
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Barcode Reader Results</title> </head> <body> <?php // Get submitted form data $apiKey = $_POST["apiKey"]; // The authentication key (API Key). Get your own by registering at https://app.pdf.co/documentation/api $barcodeTypesToFind = $_POST["barcodeTypesToFind"]; $pages = $_POST["pages"]; // 1. RETRIEVE THE PRESIGNED URL TO UPLOAD THE FILE. // * If you already have the direct PDF file link, go to the step 3. // Create URL $url = "https://api.pdf.co/v1/file/upload/get-presigned-url" . "?name=" . $_FILES["file"]["name"] . "&contenttype=application/octet-stream"; // Create request $curl = curl_init(); curl_setopt($curl, CURLOPT_HTTPHEADER, array("x-api-key: " . $apiKey)); curl_setopt($curl, CURLOPT_URL, $url); curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1); // Execute request $result = curl_exec($curl); if (curl_errno($curl) == 0) { $status_code = curl_getinfo($curl, CURLINFO_HTTP_CODE); if ($status_code == 200) { $json = json_decode($result, true); // Get URL to use for the file upload $uploadFileUrl = $json["presignedUrl"]; // Get URL of uploaded file to use with later API calls $uploadedFileUrl = $json["url"]; // 2. UPLOAD THE FILE TO CLOUD. $localFile = $_FILES["file"]["tmp_name"]; $fileHandle = fopen($localFile, "r"); curl_setopt($curl, CURLOPT_URL, $uploadFileUrl); curl_setopt($curl, CURLOPT_HTTPHEADER, array("content-type: application/octet-stream")); curl_setopt($curl, CURLOPT_PUT, true); curl_setopt($curl, CURLOPT_INFILE, $fileHandle); curl_setopt($curl, CURLOPT_INFILESIZE, filesize($localFile)); // Execute request curl_exec($curl); fclose($fileHandle); if (curl_errno($curl) == 0) { $status_code = curl_getinfo($curl, CURLINFO_HTTP_CODE); if ($status_code == 200) { // 3. READ BARCODES FROM UPLOADED IMAGE OR PDF DOCUMENT ReadBarcodes($apiKey, $barcodeTypesToFind, $uploadedFileUrl, $pages); } else { // Display request error echo "<p>Status code: " . $status_code . "</p>"; echo "<p>" . $result . "</p>"; } } else { // Display CURL error echo "Error: " . curl_error($curl); } } else { // Display service reported error echo "<p>Status code: " . $status_code . "</p>"; echo "<p>" . $result . "</p>"; } curl_close($curl); } else { // Display CURL error echo "Error: " . curl_error($curl); } function ReadBarcodes($apiKey, $barcodeTypesToFind, $uploadedFileUrl, $pages) { // Prepare URL for `Barcode Reader` API call $url = "https://api.pdf.co/v1/barcode/read/from/url" . "?types=" . join(",", $barcodeTypesToFind) . "&pages=" . $pages . "&url=" . $uploadedFileUrl; // Create request $curl = curl_init(); curl_setopt($curl, CURLOPT_HTTPHEADER, array("x-api-key: " . $apiKey)); curl_setopt($curl, CURLOPT_URL, $url); curl_setopt($curl, CURLOPT_POST, true); curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1); // Execute request $result = curl_exec($curl); if (curl_errno($curl) == 0) { $status_code = curl_getinfo($curl, CURLINFO_HTTP_CODE); if ($status_code == 200) { $json = json_decode($result, true); if ($json["error"] == false) { // Display decoding results $barcodes = $json["barcodes"]; foreach ($barcodes as $barcode) { echo "<h2>Found barcode:</h2>"; echo "<p>Type: " . $barcode["TypeName"] . "</p>"; echo "<p>Value: " . $barcode["Value"] . "</p>"; echo "<p>Document Page Index: " . $barcode["Page"] . "</p>"; echo "<p>Rectangle: " . $barcode["Rect"] . "</p>"; echo "<p>Confidence: " . $barcode["Confidence"] . "</p>"; echo "<br/>"; } } else { // Display service reported error echo "<p>Error: " . $json["message"] . "</p>"; } } else { // Display request error echo "<p>Status code: " . $status_code . "</p>"; echo "<p>" . $result . "</p>"; } } else { // Display CURL error echo "Error: " . curl_error($curl); } } ?> </body> </html>

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