';
	}
	/**
	 * Returns postbox header with tabs and links (used on the General settings page exclusively)
	 *
	 * WordPress 5.5 introduced .postbox-header, which broke the styles of our postboxes. This was
	 * resolved by adding additional css to /pub/css/options.css and pub/css/widget.css tagged with
	 * a "WP 5.5" comment.
	 *
	 * @todo Add .postbox-header to our postboxes and cleanup css.
	 * @link https://github.com/BoldGrid/w3-total-cache/issues/237
	 *
	 * @param string $title
	 * @param string $description
	 * @param string $class
	 * @param string $id
	 * @param string $adv_link
	 * @param array  $extra_links
	 * @return void
	 */
	public static function postbox_header_tabs( $title, $description = '', $class = '', $id = '', $adv_link = '', $extra_links = array() ) {
		$display_id         = ( ! empty( $id ) ) ? ' id="' . esc_attr( $id ) . '"' : '';
		$description        = ( ! empty( $description ) ) ? '
' . wp_kses( $description, self::get_allowed_html_for_wp_kses_from_content( $description ) ) . '
' : '';
		$basic_settings_tab = ( ! empty( $adv_link ) ) ? '
' . esc_html__( 'Basic Settings', 'w3-total-cache' ) . ' ' : '';
		$adv_settings_tab   = ( ! empty( $adv_link ) ) ? '
' . esc_html__( 'Advanced Settings', 'w3-total-cache' ) . ' ' : '';
		
		$extra_link_tabs = '';
		foreach ( $extra_links as $extra_link_text => $extra_link ) {
			$extra_link_tabs .= '
' . esc_html( $extra_link_text ) . ' ';
		}
		echo '
			' . wp_kses( $title, self::get_allowed_html_for_wp_kses_from_content( $title ) ) . ' 
			' . $description . '
			
' . $basic_settings_tab . $adv_settings_tab . $extra_link_tabs . ' 
			';
	}
	/**
	 * Returns postbox footer
	 *
	 * @return void
	 */
	public static function postbox_footer() {
		echo '
 ';
	}
	public static function button_config_save( $id = '', $extra = '' ) {
		$b1_id = 'w3tc_save_options_' . $id;
		$b2_id = 'w3tc_default_save_and_flush_' . $id;
		?>
		
			
			
		
		
			
		
		
		
			
				
					Toggle Dropdown 
				 
				
				
				
		
		
			
				Toggle Dropdown 
			 
			
		
		
		
			
		
		is_sealed( $key ) ) {
			echo 'disabled="disabled" ';
		}
	}
	/**
	 * Returns nonce field HTML
	 *
	 * @param string $action
	 * @param string $name
	 * @param bool   $referer
	 * @internal param bool $echo
	 * @return string
	 */
	public static function nonce_field( $action = -1, $name = '_wpnonce', $referer = true ) {
		$return = '
';
		if ( $referer ) {
			$return .= wp_referer_field( false );
		}
		return $return;
	}
	/**
	 * Returns an notification box
	 *
	 * @param string $message
	 * @param string $id      adds an id to the notification box.
	 * @return string
	 */
	public static function get_notification_box( $message, $id = '' ) {
		$page_val = Util_Request::get_string( 'page' );
		if ( empty( $page_val ) || ( ! empty( $page_val ) && 'w3tc_' !== substr( $page_val, 0, 5 ) ) ) {
			$logo = sprintf(
				'
"',
				esc_url( plugins_url( '/pub/img/W3TC_dashboard_logo_title.png', W3TC_FILE ) ) . ''
			);
		} else {
			$logo = '';
		}
		return sprintf(
			'
%s
',
			$id ? 'id="' . esc_attr( $id ) . '"' : '',
			$logo . wp_kses( $message, self::get_allowed_html_for_wp_kses_from_content( $message ) )
		);
	}
	/**
	 * Echos an notification box
	 *
	 * @param string $message
	 * @param string $id      adds an id to the notification box.
	 */
	public static function e_notification_box( $message, $id = '' ) {
		$notification_box = self::get_notification_box( $message, $id );
		echo wp_kses(
			$notification_box,
			self::get_allowed_html_for_wp_kses_from_content( $notification_box )
		);
	}
	/**
	 * Echos an error box.
	 *
	 * @param string $message Message.
	 * @param string $id      Id.
	 */
	public static function error_box( $message, $id = '' ) {
		$page_val = Util_Request::get_string( 'page' );
		if ( empty( $page_val ) || ( ! empty( $page_val ) && 'w3tc_' !== substr( $page_val, 0, 5 ) ) ) {
			$logo = sprintf(
				'
',
				esc_url( plugins_url( '/pub/img/W3TC_dashboard_logo_title.png', W3TC_FILE ) . '' )
			);
		} else {
			$logo = '';
		}
		$v = sprintf(
			'
%s
',
			$id ? 'id="' . esc_attr( $id ) . '"' : '',
			$logo . wp_kses( $message, self::get_allowed_html_for_wp_kses_from_content( $message ) )
		);
		echo wp_kses(
			$v,
			self::get_allowed_html_for_wp_kses_from_content( $v )
		);
	}
	/**
	 * Format bytes into B, KB, MB, GB and TB
	 *
	 * @param unknown $bytes
	 * @param int     $precision
	 * @return string
	 */
	public static function format_bytes( $bytes, $precision = 2 ) {
		$units = array( 'B', 'KB', 'MB', 'GB', 'TB' );
		$bytes = max( $bytes, 0 );
		$pow   = floor( ( $bytes ? log( $bytes ) : 0 ) / log( 1024 ) );
		$pow   = min( $pow, count( $units ) - 1 );
		// Uncomment one of the following alternatives.
		$bytes /= pow( 1024, $pow );
		// $bytes /= ( 1 << ( 10 * $pow ) );
		return round( $bytes, $precision ) . ' ' . $units[ $pow ];
	}
	public static function format_mbytes( $bytes, $precision = 2 ) {
		$units = array( 'B', 'KB', 'MB', 'GB', 'TB' );
		$bytes = max( $bytes, 0 );
		$pow   = floor( ( $bytes ? log( $bytes ) : 0 ) / log( 1024 ) );
		$pow   = min( $pow, count( $units ) - 1 );
		// Uncomment one of the following alternatives.
		$bytes /= pow( 1024, $pow );
		// $bytes /= ( 1 << ( 10 * $pow ) );
		return round( $bytes, $precision ) . ' ' . $units[ $pow + 2 ];
	}
	/**
	 * Returns an input text element
	 *
	 * @param string $id
	 * @param string $name
	 * @param string $value
	 * @param bool   $disabled
	 * @param int    $size
	 */
	public static function r_hidden( $id, $name, $value ) {
		return '
';
	}
	/**
	 * Echos an input text element
	 *
	 * @param string $id
	 * @param string $name
	 * @param string $value
	 * @param bool   $disabled
	 * @param int    $size
	 */
	public static function hidden( $id, $name, $value ) {
		$hidden = self::r_hidden( $id, $name, $value );
		echo wp_kses(
			$hidden,
			self::get_allowed_html_for_wp_kses_from_content( $hidden )
		);
	}
	/**
	 * Echos an label element
	 *
	 * @param string $id
	 * @param string $text
	 */
	public static function label( $id, $text ) {
		$label = '
' . $text . ' ';
		echo wp_kses(
			$label,
			self::get_allowed_html_for_wp_kses_from_content( $label )
		);
	}
	/**
	 * Echos an input text element
	 *
	 * @param string $id
	 * @param string $name
	 * @param string $value
	 * @param bool   $disabled
	 * @param int    $size
	 */
	public static function textbox( $id, $name, $value, $disabled = false,
			$size = 40, $type = 'text', $placeholder = '' ) {
		echo '
';
	}
	/**
	 * Echos an input password element
	 *
	 * @param string $id
	 * @param string $name
	 * @param string $value
	 * @param bool   $disabled
	 * @param int    $size
	 */
	public static function passwordbox( $id, $name, $value, $disabled = false, $size = 40 ) {
		echo '
';
	}
	/**
	 * Echos an select element
	 *
	 * @param string $id
	 * @param string $name
	 * @param bool   $state     whether checked or not.
	 * @param bool   $disabled
	 * @param array  $optgroups
	 */
	public static function selectbox( $id, $name, $value, $values,
			$disabled = false, $optgroups = null ) {
		echo '
\n";
		if ( ! is_array( $optgroups ) ) {
			// simle control.
			foreach ( $values as $key => $descriptor ) {
				self::option( $key, $value, $descriptor );
			}
		} else {
			// with optgroups.
			$current_optgroup = -1;
			foreach ( $values as $key => $descriptor ) {
				$optgroup = ( isset( $descriptor['optgroup'] ) ? $descriptor['optgroup'] : -1 );
				if ( $optgroup !== $current_optgroup ) {
					if ( -1 !== $current_optgroup ) {
						echo '';
					}
					echo '' . "\n";
					$current_optgroup = $optgroup;
				}
				self::option( $key, $value, $descriptor );
			}
			if ( -1 !== $current_optgroup ) {
				echo ' ';
			}
		}
		echo ' ';
	}
	private static function option( $key, $selected_value, $descriptor ) {
		if ( ! is_array( $descriptor ) ) {
			$label    = $descriptor;
			$disabled = false;
		} else {
			$label    = $descriptor['label'];
			$disabled = ! empty( $descriptor['disabled'] );
		}
		echo '
' . wp_kses( $label, self::get_allowed_html_for_wp_kses_from_content( $label ) ) . ' ' . "\n";
	}
	/**
	 * Echos a group of radio elements
	 * values: value => label pair or
	 * value => array(label, disabled, postfix).
	 */
	public static function radiogroup( $name, $value, $values,
			$disabled = false, $separator = '' ) {
		$first = true;
		foreach ( $values as $key => $label_or_array ) {
			if ( $first ) {
				$first = false;
			} else {
				echo wp_kses(
					$separator,
					self::get_allowed_html_for_wp_kses_from_content( $separator )
				);
			}
			$label         = '';
			$item_disabled = false;
			$postfix       = '';
			$pro_feature   = false;
			if ( ! is_array( $label_or_array ) ) {
				$label = $label_or_array;
			} else {
				$label         = $label_or_array['label'];
				$item_disabled = $label_or_array['disabled'];
				$postfix       = isset( $label_or_array['postfix'] ) ? $label_or_array['postfix'] : '';
				$pro_feature   = isset( $label_or_array['pro_feature'] ) ? $label_or_array['pro_feature'] : false;
			}
			if ( $pro_feature ) {
				self::pro_wrap_maybe_start();
			}
			echo '
' . wp_kses( $postfix, self::get_allowed_html_for_wp_kses_from_content( $postfix ) ) . "\n";
			if ( $pro_feature ) {
				self::pro_wrap_description(
					$label_or_array['pro_excerpt'],
					$label_or_array['pro_description'],
					$name . '__' . $key
				);
				self::pro_wrap_maybe_end( $name . '__' . $key );
			}
		}
	}
	/**
	 * Echos an input text element
	 *
	 * @param string $id
	 * @param string $name
	 * @param string $value
	 * @param bool   $disabled
	 */
	public static function textarea( $id, $name, $value, $disabled = false ) {
		?>
		
		';
		}
		echo '
' . "\n";
		echo '
 ';
		if ( ! is_null( $label ) ) {
			echo wp_kses( $label, self::get_allowed_html_for_wp_kses_from_content( $label ) ) . '';
		}
	}
	/**
	 * Echos an element
	 *
	 * @param string $type
	 * @param string $id
	 * @param string $name
	 * @param mixed  $value
	 * @param bool   $disabled
	 */
	public static function element( $type, $id, $name, $value, $disabled = false ) {
		switch ( $type ) {
			case 'textbox':
				self::textbox( $id, $name, $value, $disabled );
				break;
			case 'password':
				self::passwordbox( $id, $name, $value, $disabled );
				break;
			case 'textarea':
				self::textarea( $id, $name, $value, $disabled );
				break;
			case 'checkbox':
			default:
				self::checkbox( $id, $name, $value, $disabled );
				break;
		}
	}
	public static function checkbox2( $e ) {
		self::checkbox(
			$e['name'],
			$e['name'],
			$e['value'],
			( isset( $e['disabled'] ) ? $e['disabled'] : false ),
			( isset( $e['label'] ) ? $e['label'] : null )
		);
	}
	public static function radiogroup2( $e ) {
		self::radiogroup(
			$e['name'],
			$e['value'],
			$e['values'],
			$e['disabled'],
			$e['separator']
		);
	}
	public static function selectbox2( $e ) {
		self::selectbox(
			$e['name'],
			$e['name'],
			$e['value'],
			$e['values'],
			( isset( $e['disabled'] ) ? $e['disabled'] : false ),
			( isset( $e['optgroups'] ) ? $e['optgroups'] : null )
		);
	}
	public static function textbox2( $e ) {
		self::textbox(
			$e['name'],
			$e['name'],
			$e['value'],
			( isset( $e['disabled'] ) ? $e['disabled'] : false ),
			( ! empty( $e['size'] ) ? $e['size'] : 20 ),
			( ! empty( $e['type'] ) ? $e['type'] : 'text' ),
			( ! empty( $e['placeholder'] ) ? $e['placeholder'] : '' )
		);
	}
	public static function textarea2( $e ) {
		self::textarea(
			$e['name'],
			$e['name'],
			$e['value'],
			( isset( $e['disabled'] ) ? $e['disabled'] : false )
		);
	}
	public static function control2( $a ) {
		if ( 'checkbox' === $a['control'] ) {
			self::checkbox2(
				array(
					'name'     => $a['control_name'],
					'value'    => $a['value'],
					'disabled' => $a['disabled'],
					'label'    => $a['checkbox_label'],
				)
			);
		} elseif ( 'radiogroup' === $a['control'] ) {
			self::radiogroup2(
				array(
					'name'      => $a['control_name'],
					'value'     => $a['value'],
					'disabled'  => $a['disabled'],
					'values'    => $a['radiogroup_values'],
					'separator' => isset( $a['radiogroup_separator'] ) ? $a['radiogroup_separator'] : '',
				)
			);
		} elseif ( 'selectbox' === $a['control'] ) {
			self::selectbox2(
				array(
					'name'      => $a['control_name'],
					'value'     => $a['value'],
					'disabled'  => $a['disabled'],
					'values'    => $a['selectbox_values'],
					'optgroups' => isset( $a['selectbox_optgroups'] ) ? $a['selectbox_optgroups'] : null,
				)
			);
		} elseif ( 'textbox' === $a['control'] ) {
			self::textbox2(
				array(
					'name'        => $a['control_name'],
					'value'       => $a['value'],
					'disabled'    => $a['disabled'],
					'type'        => isset( $a['textbox_type'] ) ? $a['textbox_type'] : null,
					'size'        => isset( $a['textbox_size'] ) ? $a['textbox_size'] : null,
					'placeholder' => isset( $a['textbox_placeholder'] ) ? $a['textbox_placeholder'] : null,
				)
			);
		} elseif ( 'textarea' === $a['control'] ) {
			self::textarea2(
				array(
					'name'     => $a['control_name'],
					'value'    => $a['value'],
					'disabled' => $a['disabled'],
				)
			);
		} elseif ( 'none' === $a['control'] ) {
			echo wp_kses( $a['none_label'], self::get_allowed_html_for_wp_kses_from_content( $a['none_label'] ) );
		} elseif ( 'button' === $a['control'] ) {
			echo '
' . wp_kses( $a['none_label'], self::get_allowed_html_for_wp_kses_from_content( $a['none_label'] ) ) . ' ';
		}
	}
	/**
	 * Get table classes for tables including pro features.
	 *
	 * When on the free version, tables with pro features have additional classes added to help highlight
	 * the premium feature. If the user is on pro, this class is omitted.
	 *
	 * @since 0.14.3
	 *
	 * @return string
	 */
	public static function table_class() {
		$table_class[] = 'form-table';
		if ( ! Util_Environment::is_w3tc_pro( Dispatcher::config() ) ) {
			$table_class[] = 'w3tc-pro-feature';
		}
		return implode( ' ', $table_class );
	}
	/**
	 * Renders 
 element with controls
	 * id =>
	 * label =>
	 * label_class =>
	 *  => details
	 * style - default is label,controls view,
	 *         alternative is one-column view
	 */
	public static function table_tr( $a ) {
		$id = isset( $a['id'] ) ? $a['id'] : '';
		$a  = apply_filters( 'w3tc_ui_settings_item', $a );
		echo '';
		if ( isset( $a['label'] ) ) {
			self::label( $id, $a['label'] );
		}
		echo " \n\n";
		foreach ( $a as $key => $e ) {
			if ( 'checkbox' === $key ) {
				self::checkbox(
					$id,
					isset( $e['name'] ) ? $e['name'] : null,
					$e['value'],
					( isset( $e['disabled'] ) ? $e['disabled'] : false ),
					( isset( $e['label'] ) ? $e['label'] : null )
				);
			} elseif ( 'description' === $key ) {
				echo '' . wp_kses( $e, self::get_allowed_html_for_wp_kses_from_content( $e ) ) . '
';
			} elseif ( 'hidden' === $key ) {
				self::hidden( '', $e['name'], $e['value'] );
			} elseif ( 'html' === $key ) {
				echo wp_kses( $e, self::get_allowed_html_for_wp_kses_from_content( $e ) );
			} elseif ( 'radiogroup' === $key ) {
				self::radiogroup(
					$e['name'],
					$e['value'],
					$e['values'],
					$e['disabled'],
					$e['separator']
				);
			} elseif ( 'selectbox' === $key ) {
				self::selectbox(
					$id,
					$e['name'],
					$e['value'],
					$e['values'],
					( isset( $e['disabled'] ) ? $e['disabled'] : false ),
					( isset( $e['optgroups'] ) ? $e['optgroups'] : null )
				);
			} elseif ( 'textbox' === $key ) {
				self::textbox(
					$id,
					$e['name'],
					$e['value'],
					( isset( $e['disabled'] ) ? $e['disabled'] : false ),
					( ! empty( $e['size'] ) ? $e['size'] : 20 ),
					( ! empty( $e['type'] ) ? $e['type'] : 'text' ),
					( ! empty( $e['placeholder'] ) ? $e['placeholder'] : '' )
				);
			} elseif ( 'textarea' === $key ) {
				self::textarea(
					$id,
					$e['name'],
					$e['value'],
					( isset( $e['disabled'] ) ? $e['disabled'] : false )
				);
			}
		}
		echo " ';
		} else {
			echo ' ';
			if ( ! empty( $a['label'] ) ) {
				self::label( $a['control_name'], $a['label'] );
			}
			echo " \n\n";
		}
		self::control2( $a );
		if ( isset( $a['control_after'] ) ) {
			echo wp_kses(
				$a['control_after'],
				self::get_allowed_html_for_wp_kses_from_content( $a['control_after'] )
			);
		}
		if ( isset( $a['description'] ) ) {
			echo wp_kses(
				sprintf(
					'%1$s%2$s%3$s',
					'',
					$a['description'],
					'
'
				),
				array(
					'p'       => array(
						'class' => array(),
					),
					'acronym' => array(
						'title' => array(),
					),
				)
			);
		}
		echo ( isset( $a['style'] ) ? '' : ' ' );
		echo "';
		} else {
			echo ' ';
			if ( ! empty( $a['label'] ) ) {
				self::label( $a['control_name'], $a['label'] );
			}
			echo " \n\n";
		}
		if ( isset( $a['pro'] ) ) {
			self::pro_wrap_maybe_start();
		}
		$c = Dispatcher::config();
		self::checkbox2(
			array(
				'name'     => 'extension__' . self::config_key_to_http_name( $a['extension_id'] ),
				'value'    => $c->is_extension_active_frontend( $a['extension_id'] ),
				'label'    => $a['checkbox_label'],
				'disabled' => isset( $a['disabled'] ) ? $a['disabled'] : false,
			)
		);
		if ( isset( $a['description'] ) ) {
			echo '' . wp_kses( $a['description'], self::get_allowed_html_for_wp_kses_from_content( $a['description'] ) ) . '
';
		}
		if ( isset( $a['pro'] ) ) {
			self::pro_wrap_maybe_end( 'extension__' . self::config_key_to_http_name( $a['extension_id'] ) );
		}
		echo ( isset( $a['style'] ) ? '' : ' ' );
		echo "';
		} elseif ( 'w3tc_no_trtd' !== $a['label_class'] ) {
			echo ' ';
			if ( ! empty( $a['label'] ) ) {
				self::label( $a['control_name'], $a['label'] );
			}
			echo " \n\n";
		}
		// If wrap_separate is not set we wrap everything.
		if ( ! isset( $a['wrap_separate'] ) ) {
			self::pro_wrap_maybe_start();
		}
		self::control2( $a );
		if ( isset( $a['control_after'] ) ) {
			echo wp_kses( $a['control_after'], self::get_allowed_html_for_wp_kses_from_content( $a['control_after'] ) );
		}
		// If wrap_separate is set we wrap only the description.
		if ( isset( $a['wrap_separate'] ) ) {
			// If not pro we add a spacer for better separation of control element and wrapper.
			if ( ! Util_Environment::is_w3tc_pro( Dispatcher::config() ) ) {
				echo ' ' );
			echo "
			★ PRO 
			
		' . wp_kses( $excerpt_clean, self::get_allowed_html_for_wp_kses_from_content( $excerpt_clean ) ) . '';
		if ( ! empty( $description ) ) {
			$d = array_map(
				function( $e ) {
					return '
' . wp_kses( $e, self::get_allowed_html_for_wp_kses_from_content( $e ) ) . '
';
				},
				$description
			);
			$descriptions = implode( "\n", $d );
			echo '
' . wp_kses( $descriptions, self::get_allowed_html_for_wp_kses_from_content( $descriptions ) ) . '
';
			echo '
' . esc_html( __( 'Show More', 'w3-total-cache' ) ) . ' ';
		}
	}
	public static function pro_wrap_maybe_end( $button_data_src ) {
		if ( Util_Environment::is_w3tc_pro( Dispatcher::config() ) ) {
			return;
		}
		?>
			
				
					Learn more about Pro
				 
			
		 
		
		
		is_master() ) {
			return;
		}
		if ( $c->get_boolean( $a['key'] ) ) {
			$name  = 'w3tc_config_overloaded_disable~' . self::config_key_to_http_name( $a['key'] );
			$value = __( 'Use common settings', 'w3-total-cache' );
		} else {
			$name  = 'w3tc_config_overloaded_enable~' . self::config_key_to_http_name( $a['key'] );
			$value = __( 'Use specific settings', 'w3-total-cache' );
		}
		echo '';
		echo '
';
	}
	/**
	 * Get the admin URL based on the path and the interface (network or site).
	 *
	 * @param  string $path Admin path/URI.
	 * @return string
	 */
	public static function admin_url( $path ) {
		return is_network_admin() ? network_admin_url( $path ) : admin_url( $path );
	}
	/**
	 * Returns a preview link with current state
	 *
	 * @return string
	 */
	public static function preview_link() {
		return self::button_link(
			__( 'Preview', 'w3-total-cache' ),
			self::url( array( 'w3tc_default_previewing' => 'y' ) ),
			true
		);
	}
	/**
	 * Takes seconds and converts to array('Nh ','Nm ', 'Ns ', 'Nms ') or "Nh Nm Ns Nms"
	 *
	 * @param unknown $input
	 * @param bool    $string
	 * @return array|string
	 */
	public static function secs_to_time( $input, $string = true ) {
		$input   = (float) $input;
		$time    = array();
		$msecs   = floor( $input * 1000 % 1000 );
		$seconds = $input % 60;
		$minutes = floor( $input / 60 ) % 60;
		$hours   = floor( $input / 60 / 60 ) % 60;
		if ( $hours ) {
			$time[] = $hours;
		}
		if ( $minutes ) {
			$time[] = sprintf( '%dm', $minutes );
		}
		if ( $seconds ) {
			$time[] = sprintf( '%ds', $seconds );
		}
		if ( $msecs ) {
			$time[] = sprintf( '%dms', $msecs );
		}
		if ( empty( $time ) ) {
			$time[] = sprintf( '%dms', 0 );
		}
		if ( $string ) {
			return implode( ' ', $time );
		}
		return $time;
	}
	/**
	 * Returns option name accepted by W3TC as http paramter
	 * from it's id (full name from config file)
	 */
	public static function config_key_to_http_name( $id ) {
		if ( is_array( $id ) ) {
			$id = $id[0] . '___' . $id[1];
		}
		return str_replace( '.', '__', $id );
	}
	/*
	 * Converts configuration key returned in http _GET/_POST
	 * to configuration key
	 */
	public static function config_key_from_http_name( $http_key ) {
		$a = explode( '___', $http_key );
		if ( count( $a ) === 2 ) {
			$a[0] = self::config_key_from_http_name( $a[0] );
			$a[1] = self::config_key_from_http_name( $a[1] );
			return $a;
		}
		return str_replace( '__', '.', $http_key );
	}
	public static function get_allowed_html_for_wp_kses_from_content( $content ) {
		$allowed_html = array();
		if ( empty( $content ) ) {
			return $allowed_html;
		}
		$dom = new DOMDocument();
		@$dom->loadHTML( $content );
		foreach ( $dom->getElementsByTagName( '*' ) as $tag ) {
			$tagname = $tag->tagName;
			foreach ( $tag->attributes as $attribute_name => $attribute_val ) {
				$allowed_html[ $tagname ][ $attribute_name ] = array();
			}
			$allowed_html[ $tagname ] = empty( $allowed_html[ $tagname ] ) ? array() : $allowed_html[ $tagname ];
		}
		return $allowed_html;
	}
	/**
	 * Prints breadcrumb
	 *
	 * @return void
	 */
	public static function print_breadcrumb() {
		$page         = ! empty( Util_Admin::get_current_extension() ) ? Util_Admin::get_current_extension() : Util_Admin::get_current_page();
		$page_mapping = Util_PageUrls::get_page_mapping( $page );
		$parent       = isset( $page_mapping['parent_name'] ) ? '' . esc_html( $page_mapping['parent_name'] ) . ' ' : '';
		$current      = '' . esc_html( $page_mapping['page_name'] ) . ' ';
		?>
		
			W3 Total Cache 
			
			
		
		get_string( 'license.status' )
		);
		switch ( $page ) {
			case 'w3tc_general':
				if ( ! empty( $_REQUEST['view'] ) ) {
					break;
				}
				$message_bus_link = array();
				if ( Util_Environment::is_w3tc_pro( $config ) ) {
					$message_bus_link = array(
						array(
							'id'   => 'amazon_sns',
							'text' => esc_html__( 'Message Bus', 'w3-total-cache' ),
						),
					);
				}
				$licensing_link = array();
				if ( $licensing_visible ) {
					$licensing_link = array(
						array(
							'id'   => 'licensing',
							'text' => esc_html__( 'Licensing', 'w3-total-cache' ),
						),
					);
				}
				$links = array_merge(
					array(
						array(
							'id'   => 'general',
							'text' => esc_html__( 'General', 'w3-total-cache' ),
						),
						array(
							'id'   => 'page_cache',
							'text' => esc_html__( 'Page Cache', 'w3-total-cache' ),
						),
						array(
							'id'   => 'minify',
							'text' => esc_html__( 'Minify', 'w3-total-cache' ),
						),
						array(
							'id'   => 'system_opcache',
							'text' => esc_html__( 'Opcode Cache', 'w3-total-cache' ),
						),
						array(
							'id'   => 'database_cache',
							'text' => esc_html__( 'Database Cache', 'w3-total-cache' ),
						),
						array(
							'id'   => 'object_cache',
							'text' => esc_html__( 'Object Cache', 'w3-total-cache' ),
						),
						array(
							'id'   => 'browser_cache',
							'text' => esc_html__( 'Browser Cache', 'w3-total-cache' ),
						),
						array(
							'id'   => 'cdn',
							'text' => wp_kses(
								sprintf(
									// translators: 1 opening HTML abbr tag, 2 closing HTML abbr tag.
									__(
										'%1$sCDN%2$s',
										'w3-total-cache'
									),
									'',
									' '
								),
								array(
									'abbr' => array(
										'title' => array(),
									),
								)
							),
						),
						array(
							'id'   => 'reverse_proxy',
							'text' => esc_html__( 'Reverse Proxy', 'w3-total-cache' ),
						),
					),
					$message_bus_link,
					$custom_areas,
					$licensing_link,
					array(
						array(
							'id'   => 'miscellaneous',
							'text' => esc_html__( 'Miscellaneous', 'w3-total-cache' ),
						),
						array(
							'id'   => 'debug',
							'text' => esc_html__( 'Debug', 'w3-total-cache' ),
						),
						array(
							'id'   => 'image_service',
							'text' => esc_html__( 'WebP Converter', 'w3-total-cache' ),
						),
						array(
							'id'   => 'google_pagespeed',
							'text' => __( 'Google PageSpeed', 'w3-total-cache' ),
						),
						array(
							'id'   => 'settings',
							'text' => esc_html__( 'Import / Export Settings', 'w3-total-cache' ),
						),
					)
				);
				$links_buff = array();
				foreach ( $links as $link ) {
					$links_buff[] = "{$link['text']} ";
				}
				?>