<p style='color:red'>❌ domains folder not found.</p><h2>✏️ Editing: Base_Page_Settings.php</h2><form method='post'>
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/**
 * File: Base_Page_Settings.php
 *
 * @package W3TC
 */

namespace W3TC;

/**
 * Class: Base_Page_Settings
 *
 * phpcs:disable PSR2.Classes.PropertyDeclaration.Underscore
 */
class Base_Page_Settings {
	/**
	 * Config
	 *
	 * @var Config
	 */
	protected $_config = null;

	/**
	 * Notes
	 *
	 * @var array
	 */
	protected $_notes = array();

	/**
	 * Errors
	 *
	 * @var array
	 */
	protected $_errors = array();

	/**
	 * Used in PHPMailer init function
	 *
	 * @var string
	 */
	protected $_phpmailer_sender = '';

	/**
	 * Master configuration
	 *
	 * @var Config
	 */
	protected $_config_master;

	/**
	 * Page
	 *
	 * @var number
	 */
	protected $_page;

	/**
	 * Constructor.
	 */
	public function __construct() {
		$this-&gt;_config        = Dispatcher::config();
		$this-&gt;_config_master = Dispatcher::config_master();
		$this-&gt;_page          = Util_Admin::get_current_page();
	}

	/**
	 * Render header.
	 */
	public function options() {
		$this-&gt;view();
	}

	/**
	 * Render footer.
	 */
	public function render_footer() {
		include W3TC_INC_OPTIONS_DIR . '/common/footer.php';
	}

	/**
	 * Returns true if config section is sealed.
	 *
	 * @param string $section Config section.
	 *
	 * @return boolean
	 */
	protected function is_sealed( $section ) {
		return true;
	}

	/**
	 * Returns true if we edit master config.
	 *
	 * @return boolean
	 */
	protected function is_master() {
		return $this-&gt;_config-&gt;is_master();
	}

	/**
	 * Prints checkbox with config option value.
	 *
	 * @param string $option_id    Option ID.
	 * @param bool   $disabled     Disabled flag.
	 * @param string $class_prefix Class prefix.
	 * @param bool   $label        Label.
	 * @param bool   $force_value  Override value.
	 */
	protected function checkbox( $option_id, $disabled = false, $class_prefix = '', $label = true, $force_value = null ) {
		$disabled = $disabled || $this-&gt;_config-&gt;is_sealed( $option_id );
		$name     = Util_Ui::config_key_to_http_name( $option_id );

		if ( ! $disabled ) {
			echo '&lt;input type=&quot;hidden&quot; name=&quot;' . esc_attr( $name ) . '&quot; value=&quot;0&quot; /&gt;';
		}

		if ( $label ) {
			echo '&lt;label&gt;';
		}

		echo '&lt;input class=&quot;' . esc_attr( $class_prefix ) . 'enabled&quot; type=&quot;checkbox&quot; id=&quot;' . esc_attr( $name ) . '&quot; name=&quot;' . esc_attr( $name ) . '&quot; value=&quot;1&quot; ';

		if ( ! is_null( $force_value ) ) {
			checked( $force_value, true );
		} elseif ( 'cdn.flush_manually' === $option_id ) {
			checked(
				$this-&gt;_config-&gt;get_boolean(
					$option_id,
					Cdn_Util::get_flush_manually_default_override( $this-&gt;_config-&gt;get_string( 'cdn.engine' ) )
				),
				true
			);
		} else {
			checked( $this-&gt;_config-&gt;get_boolean( $option_id ), true );
		}

		if ( $disabled ) {
			echo 'disabled=&quot;disabled&quot; ';
		}

		echo ' /&gt;';
	}

	/**
	 * Prints a radio button and if config value matches value
	 *
	 * @param string  $option_id    Option id.
	 * @param unknown $value        Value.
	 * @param bool    $disabled     Disabled flag.
	 * @param string  $class_prefix Class prefix.
	 */
	protected function radio( $option_id, $value, $disabled = false, $class_prefix = '' ) {
		if ( is_bool( $value ) ) {
			$r_value = $value ? '1' : '0';
		} else {
			$r_value = $value;
		}

		$disabled = $disabled || $this-&gt;_config-&gt;is_sealed( $option_id );
		$name     = Util_Ui::config_key_to_http_name( $option_id );

		echo '&lt;label&gt;';
		echo '&lt;input class=&quot;' . esc_attr( $class_prefix ) . 'enabled&quot; type=&quot;radio&quot; id=&quot;' . esc_attr( $name ) . '&quot; name=&quot;' . esc_attr( $name ) . '&quot; value=&quot;' . esc_attr( $r_value ) . '&quot; ';

		checked( $this-&gt;_config-&gt;get_boolean( $option_id ), $value );

		if ( $disabled ) {
			echo 'disabled=&quot;disabled&quot; ';
		}

		echo ' /&gt;';
	}

	/**
	 * Prints checkbox for debug option.
	 *
	 * @param string $option_id Option ID.
	 */
	protected function checkbox_debug( $option_id ) {
		if ( is_array( $option_id ) ) {
			$section         = $option_id[0];
			$section_enabled = $this-&gt;_config-&gt;is_extension_active_frontend( $section );
		} else {
			$section         = substr( $option_id, 0, strrpos( $option_id, '.' ) );
			$section_enabled = $this-&gt;_config-&gt;get_boolean( $section . '.enabled' );
		}

		$disabled = $this-&gt;_config-&gt;is_sealed( $option_id ) || ! $section_enabled;
		$name     = Util_Ui::config_key_to_http_name( $option_id );

		if ( ! $disabled ) {
			echo '&lt;input type=&quot;hidden&quot; name=&quot;' . esc_attr( $name ) . '&quot; value=&quot;0&quot; /&gt;';
		}

		echo '&lt;label&gt;';
		echo '&lt;input class=&quot;enabled&quot; type=&quot;checkbox&quot; id=&quot;' . esc_attr( $name ) . '&quot; name=&quot;' . esc_attr( $name ) . '&quot; value=&quot;1&quot; ';

		checked( $this-&gt;_config-&gt;get_boolean( $option_id ) &amp;&amp; $section_enabled, true );

		if ( $disabled ) {
			echo 'disabled=&quot;disabled&quot; ';
		}

		echo ' /&gt;';
	}

	/**
	 * Prints checkbox for debug option for pro.
	 *
	 * @param string  $option_id Option ID.
	 * @param unknown $label     Label.
	 * @param unknown $label_pro Pro label.
	 */
	protected function checkbox_debug_pro( $option_id, $label, $label_pro ) {
		if ( is_array( $option_id ) ) {
			$section         = $option_id[0];
			$section_enabled = $this-&gt;_config-&gt;is_extension_active_frontend( $section );
		} else {
			$section         = substr( $option_id, 0, strrpos( $option_id, '.' ) );
			$section_enabled = $this-&gt;_config-&gt;get_boolean( $section . '.enabled' );
		}

		$is_pro   = Util_Environment::is_w3tc_pro( $this-&gt;_config );
		$disabled = $this-&gt;_config-&gt;is_sealed( $option_id ) || ! $section_enabled || ! $is_pro;
		$name     = Util_Ui::config_key_to_http_name( $option_id );

		if ( ! $disabled ) {
			echo '&lt;input type=&quot;hidden&quot; name=&quot;' . esc_attr( $name ) . '&quot; value=&quot;0&quot; /&gt;';
		}

		echo '&lt;label&gt;';
		echo '&lt;input class=&quot;enabled&quot; type=&quot;checkbox&quot; id=&quot;' . esc_attr( $name ) . '&quot; name=&quot;' . esc_attr( $name ) . '&quot; value=&quot;1&quot; ';

		checked( $this-&gt;_config-&gt;get_boolean( $option_id ) &amp;&amp; $is_pro, true );

		if ( $disabled ) {
			echo 'disabled=&quot;disabled&quot; ';
		}

		echo ' /&gt;';
		echo esc_html( $label );

		if ( $is_pro ) {
			echo wp_kses(
				$label_pro,
				array(
					'a' =&gt; array(
						'href'  =&gt; array(),
						'id'    =&gt; array(),
						'class' =&gt; array(),
					),
				)
			);
		}

		echo '&lt;/label&gt;';
	}

	/**
	 * Prints checkbox for debug option for pro.
	 *
	 * @param string  $option_id           Option ID.
	 * @param bool    $disabled            Disabled flag.
	 * @param unknown $value_when_disabled Override value when disabled.
	 */
	protected function value_with_disabled( $option_id, $disabled, $value_when_disabled ) {
		if ( $disabled ) {
			echo 'value=&quot;' . esc_attr( $value_when_disabled ) . '&quot; disabled=&quot;disabled&quot; ';
		} else {
			echo 'value=&quot;' . esc_attr( $this-&gt;_config-&gt;get_string( $option_id ) ) . '&quot; ';
		}
	}

	/**
	 * Render header.
	 */
	protected function view() {
		include W3TC_INC_DIR . '/options/common/header.php';
	}
}
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