<?php

// Visit Knowledgebase for adding Text Macros to PDF 
// https://apidocs.pdf.co/kb/Fill%20PDF%20and%20Add%20Text%20or%20Images%20(pdf-edit-add)/macros

$curl = curl_init();

curl_setopt_array($curl, array(
	CURLOPT_URL => 'https://api.pdf.co/v1/pdf/edit/add',
	CURLOPT_RETURNTRANSFER => true,
	CURLOPT_ENCODING => '',
	CURLOPT_MAXREDIRS => 10,
	CURLOPT_TIMEOUT => 0,
	CURLOPT_FOLLOWLOCATION => true,
	CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
	CURLOPT_CUSTOMREQUEST => 'POST',
	CURLOPT_POSTFIELDS =>'{
    "async": false,
    "encrypt": true,
    "inline": true,
    "name": "newDocument",
    "url": "https://bytescout-com.s3-us-west-2.amazonaws.com/files/demo-files/cloud-api/pdf-edit/10pages.pdf",
    "annotations": [
        {
            "text": "##replaceSquareBracketsToCurlyBrackets##Company: [[company_name]][[$$NewLine]][[text]]",
            "x": 50,
            "y": 50,
            "size": 12,
            "pages": "0-"
        },
    ],
    "templateData": "{ \"company_name\": \"ByteScout Inc.\", \"text\": \"Bla Bla Bla\" }" 
}',
	CURLOPT_HTTPHEADER => array(
		'Content-Type: application/json',
		'x-api-key: __YOUR_PDF_CO_API_KEY_HERE__'
	),
));

$response = json_decode(curl_exec($curl));
curl_close($curl);
echo "<h2>Output:</h2><pre>", var_export($response, true), "</pre>";