What are some commonly used output control functions in PHP?
- ob_start(), ob_flush(), ob_end_clean()
- strlen(), file_get_contents(), fopen()
- json_encode(), array_merge(), strtotime()
- All of the above
Some commonly used output control functions in PHP include ob_start(), ob_flush(), and ob_end_clean(). The ob_start() function is used to start output buffering in PHP, capturing the output to a buffer instead of sending it directly to the browser. The ob_flush() function flushes the contents of the output buffer and sends it to the browser. The ob_end_clean() function discards the contents of the output buffer without sending it. These functions provide control over the output generation and manipulation in PHP scripts, allowing you to capture, modify, and control the final output sent to the client.
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