I am using file_get_contents to fetch data from a 3rd party, however the 3rd party is experiencing a DDOS attack at the moment and therefore, most of my sites functionality is lost.
How can I set a redirect to another page if opening the stream fails?
This will help you:
$url = "http://example.com/url";
$response = get_headers($url);
if($response[0] === 'HTTP/1.1 200 OK') {
// Request response is OK
$content = file_get_contents($url);
} else {
// if header response is NOT OK redirect...
header("Location: someUrlGoesHere");
}
Change the default timeout, then redirect on failure.
You can change the default timeout used for file_get_contents like so:
ini_set('default_socket_timeout', 10); // 10 seconds
We need to do this, because the default timeout is 60 seconds - and your visitors won't want to wait that long.
Then you just test if the request went ok, and redirect based on that...
$request = file_get_contents($url);
if( !$request )
header("Location: http://someurl.com/");
exit;
(Remember to exit after a redirect, or sometimes code after that still gets executed).
You can redirect it with header().
<?php
$data = file_get_contents($attackedUrl);
if(!$data)
header("Location: $pageToRedirect");
?>
Simple. Add validation!
First, there's several methods to check if a file exists on a remote server.
Second, if you fetch data using file_get_contents, you can add validation to check if it's the full data you expected (other answers / comments mention checking using empty, or checking for a falsey value. It's up to you how you do this though, as there's no context provided about the type of data received). You can also set a timeout value in case it takes too long to fetch!
And to redirect, you can use PHP's header function, like so:
header('Location: http://my.redirected/page/href');
However, header() will not work if you have already outputted content., so please make sure you check through your script for echo / print lines before running header
https://www.php.net/manual/fr/function.is-file.php
<?php
$url = "../../filename.php";
if (is_file($url))
echo "File Exist!";
//$request = file_get_contents($url);
//print(filesize($url))." ko";
else
echo "File not Exist!";
?>
