ByteScout Cloud API Server – Barcode Reader API – PHP – Read Barcode From Uploaded File

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ByteScout Cloud API Server – Barcode Reader API – PHP – Read Barcode From Uploaded File

printable version:
ByteScout-Cloud-API-Server-PHP-Read-Barcode-From-Uploaded-File.pdf

How to read barcode from uploaded file for barcode reader API in PHP and ByteScout Cloud API Server

Step By Step Instructions on how to read barcode from uploaded file for barcode reader API in PHP

Quick guide:Learn how to read barcode from uploaded file in PHP. Barcode reader API in PHP can be applied with ByteScout Cloud API Server. ByteScout Cloud API Server is API server that is ready to use and can be installed and deployed in less than 30 minutes on your own Windows server or server in a cloud. It can save data and files on your local server-based file storage or in Amazon AWS S3 storage. Data is processed solely on the API server and is powered by ByteScout engine, no cloud services or Internet connection is required for data processing..

This simple and easy to understand sample source code in PHP for ByteScout Cloud API Server contains different functions and options you should do calling the API to implement barcode reader API. This sample code in PHP is all you need. Just copy-paste it to the code editor, then add a reference to ByteScout Cloud API Server and you are ready to try it! Writing PHP application mostly includes various stages of the software development so even if the functionality works please check it with your data and the production environment.

Our website provides free trial version of ByteScout Cloud API Server that gives source code samples to assist 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 

// Please NOTE: In this sample we're assuming Cloud Api Server is hosted at "https://localhost". 
// If it's not then please replace this with with your hosting url.

// Get submitted form data
  
$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://localhost/file/upload/get-presigned-url" . 
    "?name=" . $_FILES["file"]["name"] .
    "&contenttype=application/octet-stream";
    
// Create request
$curl = curl_init();

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($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($barcodeTypesToFind, $uploadedFileUrl, $pages) 
{
    // Prepare URL for `Barcode Reader` API call
    $url = "https://localhost/barcode/read/from/url" .
        "?types=" . join(",", $barcodeTypesToFind) .
        "&pages=" . $pages .
        "&url=" . $uploadedFileUrl;
    
    // Create request
    $curl = curl_init();
    
    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>