Output buffer issue

Hi @calinvingan,
I’m the developer of Smart Slider 3 and one of our customer informed us about a conflict between your plugin + WPRocket + Smart Slider. We do use output buffer too and in the past I gained a lot of experience in this topic. I checked your code and made a fix which should work in every case. 🙂

Edit the class SQ_Models_Frontend

Remove: private $_buffer = false;

Replace getBuffer method with:

/**
 * Get the loaded buffer and change it
 *
 * @param string $buffer
 * @param int  $phase
 * @return string
 */
public function getBuffer($buffer, $phase) {

	if ($phase & PHP_OUTPUT_HANDLER_FINAL || $phase & PHP_OUTPUT_HANDLER_END) {
		return apply_filters('sq_buffer', $buffer);
	}

	return $buffer;
}

The key is to use the $phase variable. Probably you have those “tricks” in the original source to run it only once.