How to PDF create fillable PDF forms for fillable PDF forms in PHP and PDF.co Web API

What is PDF.co Web API? It is the Rest API that provides set of data extraction functions, tools for documents manipulation, splitting and merging of pdf files. Includes built-in OCR, images recognition, can generate and read barcodes from images, scans and pdf.

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fillable-pdf-forms.php

      
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>PDF Create Fillable PDF Forms - Result</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

// Prepare URL for HTML to PDF API call
$url = "https://api.pdf.co/v1/pdf/edit/add";

// Prepare requests params
// See documentation: https://apidocs.pdf.co
$parameters = array();

// Direct URL of source PDF file.
$parameters["url"] = "https://bytescout-com.s3-us-west-2.amazonaws.com/files/demo-files/cloud-api/pdf-edit/sample.pdf";

// Name of resulting file
$parameters["name"] = "newDocument";

// If large input document, process in async mode by passing true
$parameters["async"] = false;

// Annotations Strings
$annotations =   '[{
    "text":"sample prefilled text",
    "x": 10,
    "y": 30,
    "size": 12,
    "pages": "0-",
    "type": "TextField",
    "id": "textfield1"
},
{
    "x": 100,
    "y": 150,
    "size": 12,
    "pages": "0-",
    "type": "Checkbox",
    "id": "checkbox2"
},
{
    "x": 100,
    "y": 170,
    "size": 12,
    "pages": "0-",
    "link": "https://bytescout-com.s3-us-west-2.amazonaws.com/files/demo-files/cloud-api/pdf-edit/logo.png",
    "type": "CheckboxChecked",
    "id":"checkbox3"
}]';// JSON string

// Convert JSON string to Array
$annotationsArray = json_decode($annotations, true);

$parameters["annotations"] = $annotationsArray;

// 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)
        {
            $resultFileUrl = $json["url"];
            
            // Display link to the file with conversion results
            echo "<div><h2>Result:</h2><a href='" . $resultFileUrl . "' target='_blank'>" . $resultFileUrl . "</a></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);
}

// Cleanup
curl_close($curl);

?>

</body>
</html>

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