What is the function in PHP that allows for immediate output display?
To allow for immediate output display in PHP, you can use the `flush()` function. This function sends the output buffer to the browser immediately instead of waiting for the script to finish executing. This can be useful when you want to display content to the user in real-time, such as during a long-running process or when streaming data.
// Start output buffering
ob_start();
// Your code that generates output
echo "Processing...";
// Flush the output buffer
flush();
// More code that generates output
echo "Almost done...";
// End output buffering and send the output to the browser
ob_end_flush();