What are some potential issues or limitations when using flush() in PHP, especially in the context of output buffering and browser behavior?

Issue: When using flush() in PHP, especially in the context of output buffering, there may be limitations due to browser behavior. Some browsers may not render the content until the entire response is received, leading to unexpected behavior. To ensure proper rendering, you can use ob_flush() in conjunction with flush() to flush the output buffer and send it to the browser. 

ob_start();

// Your content here

echo "Hello, World!";
ob_flush();
flush();

// More content here

ob_end_flush();

Keywords

flush PHP output buffering browser behavior limitations

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