ByteScout Cloud API Server – PDF To Image API – PHP – Convert PDF To Image From Uploaded File

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ByteScout Cloud API Server – PDF To Image API – PHP – Convert PDF To Image From Uploaded File

printable version:
ByteScout-Cloud-API-Server-PHP-Convert-PDF-To-Image-From-Uploaded-File.pdf

How to convert PDF to image from uploaded file for PDF to image API in PHP and ByteScout Cloud API Server

Step-by-step tutorial:How to convert PDF to image from uploaded file to have PDF to image API in PHP

This page displays the step-by-step instructions and algorithm of how to convert PDF to image from uploaded file and how to apply it in your application. ByteScout Cloud API Server was designed to assist PDF to image API in PHP. 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 PDF to image API. Open your PHP project and simply copy & paste the code and then run your app! This basic programming language sample code for PHP will do the whole work for you in implementing PDF to image API in your app.

ByteScout Cloud API Server – free trial version is available on our website. Also, there are other code samples to help you with your PHP application included into trial version.

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pdf-to-image.php

      <!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>PDF To Image 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
  
$outputFormat = $_POST["outputFormat"];
$pages = $_POST["pages"];


// 1. RETRIEVE THE PRESIGNED URL TO UPLOAD THE FILE.
// * If you already have a 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
        $accessFileUrl = $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($curl))
        {
            // Display request error
            echo "Error: " . curl_error($curl);
        }
        else
        {
            $status_code = curl_getinfo($curl, CURLINFO_HTTP_CODE);
            
            if ($status_code == 200)
            {
                // 3. CONVERT PDF TO IMAGE
                
                RenderPDF($accessFileUrl, $outputFormat, $pages);
            }
            else
            {
                // Display service reported error
                echo "<p>Status code: " . $status_code . "</p>"; 
                echo "<p>" . $result . "</p>"; 
            }
        }
    }
    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 RenderPDF($fileUrl, $outputFormat, $pages) 
{
    $formats = array(0 => "png", 1 => "jpg", 2 => "tiff");
    $format = $formats[$outputFormat];

    // Create URL
    $url = "https://localhost/pdf/convert/to/" . $format .
        "?url=" . urlencode($fileUrl) .
        "&pages=" . urlencode($pages);
        
    // 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 ($json["error"] == false)
            {
                if ($format == "tiff")
                {
                    // The TIFF format is multi-page, so the result is always the single file
                    $resultFileUrl = $json["url"];
                    echo "<p><a href=" . $resultFileUrl . ">" . $resultFileUrl . "</p>"; 
                }
                else
                {
                    // JPEG and PNG formats are single-page, so the results are multiple
                    $resultFiles = $json["urls"];
                    foreach ($resultFiles as &$resultFileUrl) 
                        echo "<p><a href=" . $resultFileUrl . ">" . $resultFileUrl . "</p>"; 
                }
            }
            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);
    }
    
    // Cleanup
    curl_close($curl);
}

?>

</body>
</html>