PHP can be used to implement Server-Sent Events by using the following steps:
Set the content type of the response to text/event-stream.
Create an infinite loop that sends data to the client at a regular interval.
Use the flush() function to send the data immediately to the client.
Use the sleep() function to delay the response and prevent the server from overwhelming the client with too much data.
Set an "event" field in the data to specify the type of event being sent.
Add a "retry" field in the data to specify the time interval in milliseconds after which the client should re-establish the connection if the connection is lost.
For example, the following PHP code creates an SSE endpoint that sends a random number to the client every second:
header('Content-Type: text/event-stream');
header('Cache-Control: no-cache');
while (true) {
$data = array(
'event' => 'randomNumber',
'data' => rand(1, 100),
'retry' => 1000
);
echo 'data: ' . json_encode($data) . "\n\n";
flush();
sleep(1);
}
The data sent to the client is in JSON format and includes the "event" field to specify the type of data being sent. The "retry" field is set to 1000 milliseconds, indicating that the client should retry connecting to the server after a one-second delay if the connection is lost.
Please start posting anonymously - your entry will be published after you log in or create a new account. This space is reserved only for answers. If you would like to engage in a discussion, please instead post a comment under the question or an answer that you would like to discuss
Asked: 2022-12-27 11:00:00 +0000
Seen: 20 times
Last updated: May 09 '21
How does Laravel 9's Rate Limiter work with job queues?
How to incorporate Knative service and Contour in conjunction with Ingress?
Is it possible to utilize both kustomize and helm?
How can a list be passed to helm using the terraform helm_release provider?
How can excessive inputs to SQLite jdbc db lead to memory congestion?
What are the steps to utilize Keda Scaledobjects to deploy Azure functions on AKS?
How can clipping planes be used to clip troika-three-text in Three.js?
What is the method to extract key-value pairs from an array of objects that require multiple lines?