How to merge any documents asynchronously for PDF merging API in PHP and PDF.co Web API

PDF.co Web API: the Web API with a set of tools for documents manipulation, data conversion, data extraction, splitting and merging of documents. Includes image recognition, built-in OCR, barcode generation and barcode decoders to decode bar codes from scans, pictures and pdf.

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merge-all-docs-async.php

      
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Cloud API asynchronous "PDF Merging 2" job example (allows to avoid timeout errors).</title> </head> <body> <?php // Cloud API asynchronous "PDF Merging" job example. Supports documents, spreadsheets, images as sources. // Allows to avoid timeout errors when processing huge or scanned PDF documents. // The authentication key (API Key). // Get your own by registering at https://app.pdf.co/documentation/api $apiKey = "****************************************"; // Direct URLs of input files to merge. Check another example if you need to upload local files to the cloud. $sourceFiles = array( "https://bytescout-com.s3-us-west-2.amazonaws.com/files/demo-files/cloud-api/pdf-merge/sample1.pdf", "https://bytescout-com.s3-us-west-2.amazonaws.com/files/demo-files/cloud-api/other/Input.xls", "https://bytescout-com.s3-us-west-2.amazonaws.com/files/demo-files/cloud-api/doc-to-pdf/sample.docx", "https://bytescout-com.s3-us-west-2.amazonaws.com/files/demo-files/cloud-api/image-to-pdf/image1.png", "https://bytescout-com.s3-us-west-2.amazonaws.com/files/demo-files/cloud-api/image-to-pdf/image2.jpg" ); // Prepare URL for `Merge PDF` API call. Supports documents, spreadsheets, images as sources. $url = "https://api.pdf.co/v1/pdf/merge2"; // Prepare requests params $parameters = array(); $parameters["name"] = "result.pdf"; $parameters["url"] = join(",", $sourceFiles); $parameters["async"] = true; // (!) Make asynchronous job // 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) { // URL of generated PDF file that will available after the job completion $resultFileUrl = $json["url"]; // Asynchronous job ID $jobId = $json["jobId"]; // Check the job status in a loop do { $status = CheckJobStatus($jobId, $apiKey); // Possible statuses: "working", "failed", "aborted", "success". // Display timestamp and status (for demo purposes) echo "<p>" . date(DATE_RFC2822) . ": " . $status . "</p>"; if ($status == "success") { // Display link to the file with conversion results echo "<div><h2>Conversion Result:</h2><a href='" . $resultFileUrl . "' target='_blank'>" . $resultFileUrl . "</a></div>"; break; } else if ($status == "working") { // Pause for a few seconds sleep(3); } else { echo $status . "<br/>"; break; } } while (true); } 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($curl); function CheckJobStatus($jobId, $apiKey) { $status = null; // Create URL $url = "https://api.pdf.co/v1/job/check"; // Prepare requests params $parameters = array(); $parameters["jobid"] = $jobId; // 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) { $status = $json["status"]; } 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); return $status; } ?> </body> </html>

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