I'm relatively new to PHP and I recently came across the ob_end_flush() function while reading the documentation. I understand that this function flushes the output buffer and turns off output buffering, but I'm not entirely sure how and when to use it in practice.
I'm working on a project where I'm trying to optimize the load time of my web pages. I've read that using output buffering can help improve performance by allowing me to send the output to the browser all at once, instead of in multiple small chunks.
I've successfully used ob_start() to start output buffering, but I'm not sure when I should use ob_end_flush(). From what I understand, it should be used to flush the buffer and send the output to the browser, but I'm not sure when it's necessary to do so.
I would really appreciate it if someone could explain to me when and how to use ob_end_flush() in PHP. Additionally, if anyone has any tips or best practices for optimizing the output buffering in PHP, I would be grateful to learn them.
Thank you in advance for your help!

I can definitely share my personal experience with using the ob_end_flush() function in PHP.
In my project, I had a scenario where I needed to manipulate and modify a large amount of HTML output before sending it to the browser. Output buffering came in handy here, as it allowed me to capture the entire output and perform the necessary manipulation without directly sending anything to the browser.
Once I was done with the modifications, I used ob_end_flush() to flush the buffer and send the modified output to the browser. This way, the user didn't experience any delays or partial rendering of the content.
The ob_end_flush() function essentially stops output buffering and sends all the captured output to the browser. It's crucial to call this function at the right time to ensure that the entire buffer is sent without any unwanted issues.
One important thing to note is that if ob_start() is called with the parameter `ob_gzhandler` for gzip compression, then ob_end_flush() doesn't have to be explicitly called. It will automatically be called during the script shutdown phase.
In terms of best practices, it's generally recommended to start output buffering early in your code and stop it as late as possible, right before sending the final output to the browser. This way, you can catch any potential errors or warnings and handle them before sending any output.
I hope this helps! If you have any more questions, feel free to ask.