How to Get PDF Info from Uploaded File for PDF Information API in PHP and PDF.co Web API

Learn How to Get PDF Info from Uploaded File to Have PDF Information API in PHP

Every PDF.co API contains example PHP source codes that you can find here or in the folder with installed ByteScout product. PDF.co Web API was made to help with PDF information 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 merging. Can also generate barcodes and read barcodes from images, scans, and PDFs.

PHP code snippet like this for PDF.co Web API works best when you need to quickly implement PDF information API in your PHP application. Sample code in PHP is all you need. Copy-paste it to your the code editor, then add a reference to PDF.co Web API and you are ready to try it! Enjoy writing a code with ready-to-use sample PHP codes to add PDF information API functions using PDF.co Web API in PHP.

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get-pdf-info.php

      
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>PDF Information 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


// 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. GET INFORMATION ABOUT UPLOADED PDF DOCUMENT
                
                ExtractInfo($apiKey, $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 ExtractInfo($apiKey, $uploadedFileUrl) 
{
    // Create URL
    $url = "https://api.pdf.co/v1/pdf/info";
    
    // Prepare requests params
    $parameters = array();
    $parameters["url"] = $uploadedFileUrl;

    // Create Json payload
    $data = json_encode($parameters);

    // Create request
    $curl = curl_init();
    curl_setopt($curl, CURLOPT_HTTPHEADER, array("x-api-key: " . $apiKey, "Content-type: application/json"));
    curl_setopt($curl, CURLOPT_URL, $url);
    curl_setopt($curl, CURLOPT_POST, true);
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($curl, CURLOPT_POSTFIELDS, $data);

    // 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)
            {
                $documentInfo = $json["info"];

                // Display the document info
                echo "<div><h2>Document Info:</h2><p>";
                foreach ($documentInfo as $key => $value) 
                {
                    echo $key . ' = ' . $value . '<br/>';
                }
                echo "</p></div>";
            }
            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>

How to Get PDF Info using PDF.co Web API in PHP

In this tutorial, I will show you how to get PDF Information with PDF.co Web API using PHP programming language. First I will show you the sample PDF file that we’re going to use for this tutorial. Now prepare the sample HTML and PHP code for your program.

Once you’re done, run the program on your local host. Put your API key on the API key field. Browse and select the sample PDF file, then click the proceed button.

Get Info PHP

Here’s what the result would look like.

Get PDF Info PHP

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