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class-wp-optimize-browser-cache.php

<?php

if (!defined('WPO_VERSION')) die('No direct access allowed');

require_once 'class-wp-optimize-htaccess.php';

/**
 * Class WP_Optimize_Browser_Cache
 */
class WP_Optimize_Browser_Cache {

use WP_Optimize_HTTP_Error_Codes_Trait;

private $_htaccess = null;

private $_options = null;

private $_wp_optimize = null;

/**
	 * Browser cache section in htaccess will wrapped with this comment
	 *
	 * @var string
	 */
	private $_htaccess_section_comment = 'WP-Optimize Browser Cache';

/**
	 * WP_Optimize_Browser_Cache constructor.
	 */
	public function __construct() {
		$this->_wp_optimize = WP_Optimize();

$this->_htaccess = new WP_Optimize_Htaccess();

$this->_options = $this->_wp_optimize->get_options();
	}

/**
	 * Returns singleton instance object
	 *
	 * @return WP_Optimize_Browser_Cache Returns `WP_Optimize_Browser_Cache` object
	 */
	public static function instance() {
		static $_instance = null;
		if (null === $_instance) {
			$_instance = new self();
		}
		return $_instance;
	}

/**
	 * Check headers for Cache-Control and Etag. And if they are exist return true.
	 *
	 * @return bool|WP_Error
	 **/
	public function is_enabled() {

static $is_enabled;
		if (isset($is_enabled)) return $is_enabled;

$headers = $this->get_stylesheet_headers();

if (is_wp_error($headers)) return $headers;

if (array_key_exists('cache-control', $headers) && array_key_exists('expires', $headers)) {
			$is_enabled = true;
		} else {
			$is_enabled = false;
		}

if ($this->is_browser_cache_section_exists() && false === $this->_wp_optimize->is_apache_module_loaded(array('mod_expires', 'mod_headers'))) {
			$is_enabled = new WP_Error('Browser cache', __('We successfully updated your .htaccess file.', 'wp-optimize') . ' ' . __('But it seems one of Apache modules - mod_expires or mod_headers is not active.', 'wp-optimize'));
		}

return $is_enabled;
	}

/**
	 * Enable browser cache - add settings into .htaccess.
	 *
	 * @param string $expiry_time
	 */
	public function enable($expiry_time = '1 month') {
		$this->_htaccess->update_commented_section($this->prepare_browser_cache_section($expiry_time), $this->_htaccess_section_comment);
		$this->_htaccess->write_file();
		$this->_options->update_option('enable_browser_cache', true);
	}

/**
	 * Disable cache - remove settings from .htaccess added in enable() function.
	 */
	public function disable() {
		$this->_htaccess->remove_commented_section($this->_htaccess_section_comment);
		$this->_htaccess->write_file();
		$this->_options->update_option('enable_browser_cache', false);
	}

/**
	 * Check if browser cache option is set to true then add section with gzip settings into .htaccess (used when plugin being activated).
	 */
	public function restore() {
		$expire_days = $this->_options->get_option('browser_cache_expire_days', '');
		$expire_hours = $this->_options->get_option('browser_cache_expire_hours', '');

$expiry_time = $this->prepare_interval($expire_days, $expire_hours);

$enabled = ('' == $expiry_time) ? false : true;

if ($enabled && $this->_htaccess->is_writable()) $this->enable($expiry_time);
	}

/**
	 * Check if section with browser cache settings already exists.
	 */
	public function is_browser_cache_section_exists() {
		return $this->_htaccess->is_commented_section_exists($this->_htaccess_section_comment);
	}

/**
	 * Handle for enable_browser_cache command used in WP_Optimize_Commands.
	 *
	 * @param array $params - ['browser_cache_expire' => '1 month 15 days 2 hours' || '' - for disable cache]
	 * @return array
	 */
	public function enable_browser_cache_command_handler($params) {
		$expire_days = isset($params['browser_cache_expire_days']) ? $params['browser_cache_expire_days'] : '';
		$expire_hours = isset($params['browser_cache_expire_hours']) ? $params['browser_cache_expire_hours'] : '';

$current_expire_days = $this->_options->get_option('browser_cache_expire_days', '');
		$current_expire_hours = $this->_options->get_option('browser_cache_expire_hours', '');

$section_updated = false;

$expiry_time = $this->prepare_interval($expire_days, $expire_hours);

$enable = ('' == $expiry_time) ? false : true;

/**
		 * If we don't need to do anything in .htaccess then return message.
		 */
		if ($enable == $this->_htaccess->is_commented_section_exists() && $expire_days == $current_expire_days && $expire_hours == $current_expire_hours) {
			$message = __('Browser static caching settings already exists in the .htaccess file', 'wp-optimize');

return array(
				'success' => true,
				'enabled' => $enable,
				'message' => $message,
			);
		}

if ($this->_htaccess->is_writable()) {
			// update commented section

if ($enable) {
				$this->enable($expiry_time);
			} else {
				$this->disable();
			}

// read updated file.
			$this->_htaccess->read_file();
			// check if section added or removed successfully.
			$section_exists = $this->_htaccess->is_commented_section_exists();
			// set correct $section-updated flag.
			$section_updated = $enable === $section_exists;
		}

if ($section_updated) {
			$enabled = $this->is_enabled();

// save $expire value to options.
			$this->_options->update_option('browser_cache_expire_days', $expire_days);
			$this->_options->update_option('browser_cache_expire_hours', $expire_hours);

if (is_wp_error($enabled)) {
				return array(
					'success' => true,
					'enabled' => $enabled,
					'error_message' => $enabled->get_error_message(),
				);
			} else {
				return array(
					'success' => true,
					'enabled' => $enabled,
					'message' => __('We successfully updated your .htaccess file.', 'wp-optimize'),
				);
			}
		} else {
			$cache_section = $this->prepare_browser_cache_section($expiry_time);

if ($enable) {
				// translators: %s is a file name
				$message = sprintf(__("We can\'t update your %s file.", 'wp-optimize'), $this->_htaccess->get_filename()) . ' ' . __('Please try to add following lines manually:', 'wp-optimize');
				$output = htmlentities($this->_htaccess->get_section_begin_comment() . PHP_EOL .
						  join(PHP_EOL, $this->_htaccess->get_flat_array($cache_section)).
						  PHP_EOL . $this->_htaccess->get_section_end_comment());
			} else {
				// translators: %s is a file name
				$message = sprintf(__("We can\'t update your %s file.", 'wp-optimize'), $this->_htaccess->get_filename()) . ' ' . __('Please try to remove following lines manually:', 'wp-optimize');
				$output = htmlentities($this->_htaccess->get_section_begin_comment() . PHP_EOL .
					' ... ... ... '.
					PHP_EOL . $this->_htaccess->get_section_end_comment());
			}

return array(
				'success' => false,
				'enabled' => $this->is_enabled(),
				'error_message' => $message,
				'output' => $output,
			);
		}
	}

/**
	 * Use $days an $hours values to build correct time interval as a string like '2 days 3 hours' or empty string if date is empty.
	 *
	 * @param int $days
	 * @param int $hours
	 * @return string
	 */
	private function prepare_interval($days, $hours) {

$days = is_numeric($days) ? floor($days) : 0;
		$hours = is_numeric($hours) ? floor($hours) : 0;

if (0 == $days && 0 == $hours) {
			return '';
		}

$parts = array();

// if hours value more than one day then fix it.
		$days += floor($hours / 24);
		$hours = $hours % 24;

$years = floor($days / 365);
		$days = $days % 365;
		$months = floor($days / 30);
		$days = $days % 30;

if ($years > 0) {
			$parts[] = $years . ($years > 1 ? ' years' : ' year');
		}

if ($months > 0) {
			$parts[] = $months . ($months > 1 ? ' months' : ' month');
		}

if ($days > 0) {
			$parts[] = $days . ($days > 1 ? ' days' : ' day');
		}

if ($hours > 0) {
			$parts[] = $hours . ($hours > 1 ? ' hours' : ' hour');
		}

return join(' ', $parts);
	}

/**
	 * Build browser cache section array.
	 *
	 * @param string $expire - value like - 1 day 12 hours 15 minutes
	 * @return array
	 */
	public function prepare_browser_cache_section($expire) {
		return array(
			array(
				'<IfModule mod_expires.c>',
				'ExpiresActive On',
				'ExpiresByType text/css "access '.$expire.'"',
				'ExpiresByType text/html "access '.$expire.'"',
				'ExpiresByType image/gif "access '.$expire.'"',
				'ExpiresByType image/png "access '.$expire.'"',
				'ExpiresByType image/jpg "access '.$expire.'"',
				'ExpiresByType image/jpeg "access '.$expire.'"',
				'ExpiresByType image/webp "access '.$expire.'"',
				'ExpiresByType image/x-icon "access '.$expire.'"',
				'ExpiresByType application/pdf "access '.$expire.'"',
				'ExpiresByType application/javascript "access '.$expire.'"',
				'ExpiresByType text/x-javascript "access '.$expire.'"',
				'ExpiresByType application/x-shockwave-flash "access '.$expire.'"',
				'ExpiresDefault "access '.$expire.'"',
				'</IfModule>',
			),
			'',
			array(
				'<IfModule mod_headers.c>',
				array(
					'<filesMatch "\.(ico|jpe?g|png|gif|webp|swf)$">',
					'Header set Cache-Control "public"',
					'</filesMatch>',
				),
				array(
					'<filesMatch "\.(css)$">',
					'Header set Cache-Control "public"',
					'</filesMatch>',
				),
				array(
					'<filesMatch "\.(js)$">',
					'Header set Cache-Control "private"',
					'</filesMatch>',
				),
				array(
					'<filesMatch "\.(x?html?|php)$">',
					'Header set Cache-Control "private, must-revalidate"',
					'</filesMatch>',
				),
				'</IfModule>',
			),
			'',
			'#Disable ETag',
			'FileETag None',
		);
	}
}

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.	dir	-	moonrcjl/moonrcjl	0755	2025-07-31 11:29:10
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tables	dir	-	moonrcjl/moonrcjl	0755	2025-07-31 11:29:10
backward-compatibility-functions.php	text/x-php	3.23 KB	moonrcjl/moonrcjl	0644	2020-12-18 10:52:22
class-re-smush-it-task.php	text/x-php	5.47 KB	moonrcjl/moonrcjl	0644	2025-02-17 04:50:28
class-updraft-abstract-logger.php	text/x-php	3.43 KB	moonrcjl/moonrcjl	0644	2019-09-24 06:25:36
class-updraft-email-logger.php	text/x-php	4.11 KB	moonrcjl/moonrcjl	0644	2021-11-30 07:57:30
class-updraft-file-logger.php	text/x-php	4.26 KB	moonrcjl/moonrcjl	0644	2025-05-01 02:24:58
class-updraft-log-levels.php	text/x-php	911 B	moonrcjl/moonrcjl	0644	2018-02-20 04:52:16
class-updraft-logger-interface.php	text/x-php	2.78 KB	moonrcjl/moonrcjl	0644	2021-11-30 07:57:30
class-updraft-logger.php	text/x-php	4.84 KB	moonrcjl/moonrcjl	0644	2025-05-01 02:24:58
class-updraft-php-logger.php	text/x-php	2.81 KB	moonrcjl/moonrcjl	0644	2025-05-01 02:24:58
class-updraft-ring-logger.php	text/x-php	4.05 KB	moonrcjl/moonrcjl	0644	2025-02-10 04:14:44
class-updraft-smush-manager-commands.php	text/x-php	28.43 KB	moonrcjl/moonrcjl	0644	2025-07-16 06:37:22
class-updraft-smush-manager.php	text/x-php	57.05 KB	moonrcjl/moonrcjl	0644	2025-07-16 06:37:22
class-updraft-smush-task.php	text/x-php	12.98 KB	moonrcjl/moonrcjl	0644	2025-07-16 06:37:22
class-updraftcentral-wp-optimize-commands.php	text/x-php	1.17 KB	moonrcjl/moonrcjl	0644	2022-06-03 10:20:18
class-wp-optimization.php	text/x-php	12.86 KB	moonrcjl/moonrcjl	0644	2025-07-16 06:37:22
class-wp-optimize-404-detector-cron.php	text/x-php	1.03 KB	moonrcjl/moonrcjl	0644	2024-12-09 05:24:26
class-wp-optimize-404-detector.php	text/x-php	11 KB	moonrcjl/moonrcjl	0644	2025-05-01 02:24:58
class-wp-optimize-admin.php	text/x-php	32.53 KB	moonrcjl/moonrcjl	0644	2025-07-31 05:08:32
class-wp-optimize-browser-cache.php	text/x-php	9.21 KB	moonrcjl/moonrcjl	0644	2025-02-10 04:14:44
class-wp-optimize-commands.php	text/x-php	36.57 KB	moonrcjl/moonrcjl	0644	2025-07-31 05:08:32
class-wp-optimize-database-information.php	text/x-php	16.73 KB	moonrcjl/moonrcjl	0644	2025-05-01 02:24:58
class-wp-optimize-delay-js.php	text/x-php	10.95 KB	moonrcjl/moonrcjl	0644	2025-03-06 04:33:06
class-wp-optimize-gzip-compression.php	text/x-php	10.78 KB	moonrcjl/moonrcjl	0644	2025-02-10 04:14:44
class-wp-optimize-heartbeat.php	text/x-php	3.95 KB	moonrcjl/moonrcjl	0644	2025-05-01 02:24:58
class-wp-optimize-htaccess.php	text/x-php	8.8 KB	moonrcjl/moonrcjl	0644	2025-05-01 02:24:58
class-wp-optimize-http-error-codes-trait.php	text/x-php	8.83 KB	moonrcjl/moonrcjl	0644	2025-03-03 10:03:20
class-wp-optimize-install-or-update-notice.php	text/x-php	3.27 KB	moonrcjl/moonrcjl	0644	2024-04-16 12:42:52
class-wp-optimize-notices.php	text/x-php	15.49 KB	moonrcjl/moonrcjl	0644	2025-07-31 05:08:32
class-wp-optimize-options.php	text/x-php	16.08 KB	moonrcjl/moonrcjl	0644	2025-07-31 05:08:32
class-wp-optimize-performance.php	text/x-php	3.47 KB	moonrcjl/moonrcjl	0644	2024-12-09 05:24:26
class-wp-optimize-preloader.php	text/x-php	17.94 KB	moonrcjl/moonrcjl	0644	2025-07-31 05:08:32
class-wp-optimize-server-information.php	text/x-php	4.83 KB	moonrcjl/moonrcjl	0644	2025-02-17 04:50:28
class-wp-optimize-system-status-report.php	text/x-php	10.93 KB	moonrcjl/moonrcjl	0644	2025-02-10 04:14:44
class-wp-optimize-table-management.php	text/x-php	3.67 KB	moonrcjl/moonrcjl	0644	2025-02-10 04:14:44
class-wp-optimize-transients-cache.php	text/x-php	3.35 KB	moonrcjl/moonrcjl	0644	2020-01-30 04:28:26
class-wp-optimize-updates.php	text/x-php	11.01 KB	moonrcjl/moonrcjl	0644	2025-02-17 04:50:28
class-wp-optimize-utils.php	text/x-php	7.41 KB	moonrcjl/moonrcjl	0644	2025-07-31 05:08:32
class-wp-optimizer.php	text/x-php	20.44 KB	moonrcjl/moonrcjl	0644	2025-02-10 04:14:44
class-wpo-activation.php	text/x-php	2.68 KB	moonrcjl/moonrcjl	0644	2025-05-01 02:24:58
class-wpo-ajax.php	text/x-php	12.13 KB	moonrcjl/moonrcjl	0644	2025-03-03 10:03:20
class-wpo-deactivation.php	text/x-php	533 B	moonrcjl/moonrcjl	0644	2024-03-06 09:29:48
class-wpo-image-utils.php	text/x-php	1.7 KB	moonrcjl/moonrcjl	0644	2025-07-16 06:37:22
class-wpo-page-optimizer.php	text/x-php	1.59 KB	moonrcjl/moonrcjl	0644	2025-06-02 05:15:44
class-wpo-uninstall.php	text/x-php	2.59 KB	moonrcjl/moonrcjl	0644	2025-05-01 02:24:58
updraftcentral.php	text/x-php	1.66 KB	moonrcjl/moonrcjl	0644	2020-12-18 10:52:22

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