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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Cloud API asynchronous "PDF Merging" job example (allows to avoid timeout errors).</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.
// Cloud API asynchronous "PDF Merging" job example.
// Allows to avoid timeout errors when processing huge or scanned PDF documents.
// Direct URLs of PDF files to merge. Check another example if you need to upload local files to the cloud.
$sourceFiles = array(
"https://bytescout-com.s3.amazonaws.com/files/demo-files/cloud-api/pdf-merge/sample1.pdf",
"https://bytescout-com.s3.amazonaws.com/files/demo-files/cloud-api/pdf-merge/sample2.pdf");
// Prepare URL for `Merge PDF` API call
$url = "https://localhost/pdf/merge" .
"?url=" . join(",", $sourceFiles) .
"&async=true"; // (!) Make asynchronous job
// 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);
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); // 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)
{
$status = null;
// Create URL
$url = "https://localhost/job/check?jobid=" . $jobId;
// 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);
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>
See also:
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See also: