| Current Path : /storage/v11800/affypharma/public_html/wp-content/plugins/w3-total-cache/ |
Linux v11800 5.3.0-1023-aws #25~18.04.1-Ubuntu SMP Fri Jun 5 15:19:18 UTC 2020 aarch64
|
| Current File : /storage/v11800/affypharma/public_html/wp-content/plugins/w3-total-cache/Util_Admin.php |
<?php
/**
* File: Util_Admin.php
*
* @package W3TC
*/
namespace W3TC;
/**
* Class: Util_Admin
*/
class Util_Admin {
/**
* Redirects when in WP Admin.
*
* @static
*
* @param array $params Parameters.
* @param bool $check_referrer Check referrer.
* @param string $page Page.
*/
public static function redirect( $params = array(), $check_referrer = false, $page = '' ) {
$url = Util_Request::get_string( 'redirect' );
$page_url = Util_Request::get_string( 'page' );
if ( empty( $url ) ) {
if ( $check_referrer && ! empty( $_SERVER['HTTP_REFERER'] ) ) {
$url = isset( $_SERVER['HTTP_REFERER'] ) ? sanitize_text_field( wp_unslash( $_SERVER['HTTP_REFERER'] ) ) : '';
} else {
$url = 'admin.php';
if ( empty( $page ) ) {
$page = $page_url;
}
$params = array_merge( array( 'page' => $page ), $params );
}
}
Util_Environment::redirect( $url, $params );
}
/**
* Redirect function to current admin page with errors and messages specified.
*
* @static
*
* @param array $params Parameters.
* @param array $errors Errors.
* @param array $notes Notes.
* @param bool $check_referrer Check referrer.
* @return void
*/
public static function redirect_with_custom_messages( $params, $errors = null, $notes = null, $check_referrer = false ) {
if ( empty( $errors ) && self::single_system_item( $notes ) ) {
self::redirect( array_merge( $params, array( 'w3tc_note' => $notes[0] ) ), $check_referrer );
return;
}
if ( self::single_system_item( $errors ) && empty( $notes ) ) {
self::redirect( array_merge( $params, array( 'w3tc_error' => $errors[0] ) ), $check_referrer );
return;
}
$message_id = uniqid();
update_option(
'w3tc_message',
array(
$message_id => array(
'errors' => $errors,
'notes' => $notes,
),
),
'yes'
);
self::redirect( array_merge( $params, array( 'w3tc_message' => $message_id ) ), $check_referrer );
}
/**
* Special redirect with ability to pass custom_message_id based on $data.
* query_string
* actions - which actions to call on render
* errors
* notes
*
* @static
*
* @param array $data Data.
*/
public static function redirect_with_custom_messages2( $data ) {
if ( ! isset( $data['query_string']['page'] ) ) {
$data['query_string']['page'] = Util_Request::get_string( 'page' );
if ( 'w3tc_extensions' === $data['query_string']['page'] ) {
$data['query_string']['extension'] = Util_Request::get_string( 'extension' );
$data['query_string']['action'] = Util_Request::get_string( 'action' );
}
}
$message_id = uniqid();
update_option( 'w3tc_message', array( $message_id => $data ), 'yes' );
$data['query_string']['w3tc_message'] = $message_id;
Util_Environment::redirect( 'admin.php', $data['query_string'] );
}
/**
* Custom message id.
*
* @static
*
* @param array $errors Errors.
* @param array $notes Notes.
*/
public static function custom_message_id( $errors = null, $notes = null ) {
$message_id = uniqid();
update_option(
'w3tc_message',
array(
$message_id => array(
'errors' => $errors,
'notes' => $notes,
),
),
'yes'
);
return 'w3tc_message=' . $message_id;
}
/**
* Checks if contains single message item.
*
* @static
*
* @param array $a Array.
* @return bool
*/
public static function single_system_item( $a ) {
if ( ! is_array( $a ) || count( $a ) !== 1 ) {
return false;
}
$first_key = array_keys( $a );
$first_key = $first_key[0];
$pos = strpos( $a[ $first_key ], ' ' );
if ( false === $pos ) {
return true;
}
return false;
}
/**
* Save config, can't decline save process. (difference from action_save).
*
* Do some actions on config keys update.
*
* Used in several places such as:
*
* 1. common config save
* 2. import settings
*
* @static
*
* @param Config $current_config Current config.
* @param Config $new_config New config.
* @return bool
* @throws \Exception Exception.
*/
public static function config_save( $current_config, $new_config ) {
$master_config = ( $new_config->is_master() ? $new_config : Dispatcher::config_master() );
if ( $master_config->get_integer( 'common.instance_id', 0 ) == 0 ) {
$master_config->set( 'common.instance_id', mt_rand() );
if ( ! $new_config->is_master() ) {
$master_config->save();
}
}
$old_config = new Config();
$browsercache_dependencies = array();
if ( $new_config->get_boolean( 'browsercache.enabled' ) ) {
$browsercache_dependencies = array_merge(
$browsercache_dependencies,
array(
'browsercache.rewrite',
'browsercache.cssjs.replace',
'browsercache.html.replace',
'browsercache.other.replace',
)
);
if ( $new_config->get_boolean( 'browsercache.cssjs.replace' ) ) {
$browsercache_dependencies = array_merge(
$browsercache_dependencies,
array(
'browsercache.cssjs.compression',
'browsercache.cssjs.expires',
'browsercache.cssjs.lifetime',
'browsercache.cssjs.cache.control',
'browsercache.cssjs.cache.policy',
'browsercache.cssjs.etag',
'browsercache.cssjs.w3tc',
)
);
}
if ( $new_config->get_boolean( 'browsercache.html.replace' ) ) {
$browsercache_dependencies = array_merge(
$browsercache_dependencies,
array(
'browsercache.html.compression',
'browsercache.html.expires',
'browsercache.html.lifetime',
'browsercache.html.cache.control',
'browsercache.html.cache.policy',
'browsercache.html.etag',
'browsercache.html.w3tc',
)
);
}
if ( $new_config->get_boolean( 'browsercache.other.replace' ) ) {
$browsercache_dependencies = array_merge(
$browsercache_dependencies,
array(
'browsercache.other.compression',
'browsercache.other.expires',
'browsercache.other.lifetime',
'browsercache.other.cache.control',
'browsercache.other.cache.policy',
'browsercache.other.etag',
'browsercache.other.w3tc',
)
);
}
$old_bc_dependencies_values = array();
$new_bc_dependencies_values = array();
foreach ( $browsercache_dependencies as $key ) {
$old_bc_dependencies_values[] = $old_config->get( $key );
$new_bc_dependencies_values[] = $new_config->get( $key );
}
if ( serialize( $old_bc_dependencies_values ) != serialize( $new_bc_dependencies_values ) ) {
$state_note = Dispatcher::config_state_note();
$state_note->set( 'common.show_note.flush_statics_needed', true );
}
}
/**
* Show need empty page cache notification
*/
$cache_flush = Dispatcher::component( 'CacheFlush' );
if ( $cache_flush->flushable_posts() ) {
$pgcache_dependencies = array_merge(
$browsercache_dependencies,
array(
'pgcache.debug',
'pgcache.cache.query',
'pgcache.cache.home',
'pgcache.cache.feed',
'pgcache.cache.nginx_handle_xml',
'pgcache.cache.ssl',
'pgcache.cache.404',
'pgcache.cache.headers',
'pgcache.compatibility',
'pgcache.remove_charset',
'pgcache.accept.uri',
'pgcache.accept.files',
'pgcache.accept.qs',
'pgcache.late_init',
'pgcache.mirrors.enabled',
'pgcache.reject.front_page',
'pgcache.reject.logged',
'pgcache.reject.logged_roles',
'pgcache.reject.uri',
'pgcache.reject.ua',
'pgcache.reject.cookie',
'pgcache.reject.request_head',
'dbcache.enabled',
'objectcache.enabled',
'minify.enabled',
'mobile.enabled',
'referrer.enabled',
)
);
if ( $new_config->get_boolean( 'pgcache.mirrors.enabled' ) ) {
$pgcache_dependencies = array_merge( $pgcache_dependencies, array( 'pgcache.mirrors.home_urls' ) );
}
if ( $new_config->get_boolean( 'dbcache.enabled' ) ) {
$pgcache_dependencies = array_merge( $pgcache_dependencies, array( 'dbcache.debug' ) );
}
if ( $new_config->getf_boolean( 'objectcache.enabled' ) ) {
$pgcache_dependencies = array_merge( $pgcache_dependencies, array( 'objectcache.debug' ) );
}
if ( $new_config->get_boolean( 'minify.enabled' ) ) {
$pgcache_dependencies = array_merge(
$pgcache_dependencies,
array(
'minify.auto',
'minify.debug',
'minify.rewrite',
'minify.html.enable',
'minify.html.engine',
'minify.html.inline.css',
'minify.html.inline.js',
'minify.html.strip.crlf',
'minify.html.comments.ignore',
'minify.css.enable',
'minify.css.engine',
'minify.css.groups',
'minify.js.enable',
'minify.js.engine',
'minify.js.groups',
'minify.htmltidy.options.clean',
'minify.htmltidy.options.hide-comments',
'minify.htmltidy.options.wrap',
'minify.reject.logged',
'minify.reject.ua',
'minify.reject.uri',
)
);
}
$modules = Dispatcher::component( 'ModuleStatus' );
if ( $modules->is_running( 'cdn' ) ) {
$pgcache_dependencies = array_merge(
$pgcache_dependencies,
array(
'cdn.enabled',
'cdn.debug',
'cdn.engine',
'cdn.uploads.enable',
'cdn.includes.enable',
'cdn.includes.files',
'cdn.theme.enable',
'cdn.theme.files',
'cdn.minify.enable',
'cdn.custom.enable',
'cdn.custom.files',
'cdn.ftp.domain',
'cdn.ftp.ssl',
'cdn.s3.cname',
'cdn.s3.ssl',
'cdn.cf.cname',
'cdn.cf.ssl',
'cdn.cf2.cname',
'cdn.cf2.ssl',
'cdn.rscf.cname',
'cdn.rscf.ssl',
'cdn.azure.cname',
'cdn.azure.ssl',
'cdn.mirror.domain',
'cdn.mirror.ssl',
'cdn.cotendo.domain',
'cdn.cotendo.ssl',
'cdn.edgecast.domain',
'cdn.edgecast.ssl',
'cdn.att.domain',
'cdn.att.ssl',
'cdn.reject.logged_roles',
'cdn.reject.roles',
'cdn.reject.ua',
'cdn.reject.uri',
'cdn.reject.files',
)
);
} elseif ( $old_config->get_boolean( 'cdn.enabled' ) && ! $new_config->get_boolean( 'cdn.enabled' ) ) {
$pgcache_dependencies = array_merge( $pgcache_dependencies, array( 'cdn.enabled' ) );
}
if ( $new_config->get_boolean( 'mobile.enabled' ) ) {
$pgcache_dependencies = array_merge( $pgcache_dependencies, array( 'mobile.rgroups' ) );
}
if ( $new_config->get_boolean( 'referrer.enabled' ) ) {
$pgcache_dependencies = array_merge( $pgcache_dependencies, array( 'referrer.rgroups' ) );
}
if ( $new_config->get_boolean( 'browsercache.enabled' ) && $new_config->get_string( 'pgcache.engine' ) === 'file_generic' ) {
$pgcache_dependencies = array_merge(
$pgcache_dependencies,
array(
'browsercache.html.last_modified',
'browsercache.other.last_modified',
)
);
}
$old_pgcache_dependencies_values = array();
$new_pgcache_dependencies_values = array();
foreach ( $pgcache_dependencies as $pgcache_dependency ) {
$old_pgcache_dependencies_values[] = $old_config->get( $pgcache_dependency );
$new_pgcache_dependencies_values[] = $new_config->get( $pgcache_dependency );
}
if ( serialize( $old_pgcache_dependencies_values ) != serialize( $new_pgcache_dependencies_values ) ) {
$state_note = Dispatcher::config_state_note();
$state_note->set( 'common.show_note.flush_posts_needed', true );
}
}
/**
* Show need empty minify notification
*/
if ( $current_config->get_boolean( 'minify.enabled' ) && $new_config->get_boolean( 'minify.enabled' ) && ( ( $new_config->get_boolean( 'minify.css.enable' ) && ( $new_config->get_boolean( 'minify.auto' ) || count( $new_config->get_array( 'minify.css.groups' ) ) ) ) || ( $new_config->get_boolean( 'minify.js.enable' ) && ( $new_config->get_boolean( 'minify.auto' ) || count( $new_config->get_array( 'minify.js.groups' ) ) ) ) ) ) {
$minify_dependencies = array_merge(
$browsercache_dependencies,
array(
'minify.auto',
'minify.debug',
'minify.options',
'minify.symlinks',
'minify.css.enable',
'minify.js.enable',
)
);
if ( $new_config->get_boolean( 'minify.css.enable' ) && ( $new_config->get_boolean( 'minify.auto' ) || count( $new_config->get_array( 'minify.css.groups' ) ) ) ) {
$minify_dependencies = array_merge(
$minify_dependencies,
array(
'minify.css.engine',
'minify.css.method',
'minify.css.strip.comments',
'minify.css.strip.crlf',
'minify.css.imports',
'minify.css.groups',
'minify.yuicss.path.java',
'minify.yuicss.path.jar',
'minify.yuicss.options.line-break',
'minify.csstidy.options.remove_bslash',
'minify.csstidy.options.compress_colors',
'minify.csstidy.options.compress_font-weight',
'minify.csstidy.options.lowercase_s',
'minify.csstidy.options.optimise_shorthands',
'minify.csstidy.options.remove_last_;',
'minify.csstidy.options.remove_space_before_important',
'minify.csstidy.options.case_properties',
'minify.csstidy.options.sort_properties',
'minify.csstidy.options.sort_selectors',
'minify.csstidy.options.merge_selectors',
'minify.csstidy.options.discard_invalid_selectors',
'minify.csstidy.options.discard_invalid_properties',
'minify.csstidy.options.css_level',
'minify.csstidy.options.preserve_css',
'minify.csstidy.options.timestamp',
'minify.csstidy.options.template',
)
);
}
if ( $new_config->get_boolean( 'minify.js.enable' ) && ( $new_config->get_boolean( 'minify.auto' ) || count( $new_config->get_array( 'minify.js.groups' ) ) ) ) {
$minify_dependencies = array_merge(
$minify_dependencies,
array(
'minify.js.engine',
'minify.js.method',
'minify.js.combine.header',
'minify.js.combine.body',
'minify.js.combine.footer',
'minify.js.strip.comments',
'minify.js.strip.crlf',
'minify.js.groups',
'minify.yuijs.path.java',
'minify.yuijs.path.jar',
'minify.yuijs.options.line-break',
'minify.yuijs.options.nomunge',
'minify.yuijs.options.preserve-semi',
'minify.yuijs.options.disable-optimizations',
'minify.ccjs.path.java',
'minify.ccjs.path.jar',
'minify.ccjs.options.compilation_level',
'minify.ccjs.options.formatting',
)
);
}
$modules = Dispatcher::component( 'ModuleStatus' );
if ( $modules->is_running( 'cdn' ) ) {
$minify_dependencies = array_merge( $minify_dependencies, array( 'cdn.engine', 'cdn.enabled' ) );
} elseif ( $old_config->get_boolean( 'cdn.enabled' ) && ! $new_config->get_boolean( 'cdn.enabled' ) ) {
$minify_dependencies = array_merge( $minify_dependencies, array( 'cdn.enabled' ) );
}
$old_minify_dependencies_values = array();
$new_minify_dependencies_values = array();
foreach ( $minify_dependencies as $minify_dependency ) {
$old_minify_dependencies_values[] = $old_config->get( $minify_dependency );
$new_minify_dependencies_values[] = $new_config->get( $minify_dependency );
}
if ( serialize( $old_minify_dependencies_values ) != serialize( $new_minify_dependencies_values ) ) {
$state_note = Dispatcher::config_state_note();
$state_note->set( 'minify.show_note.need_flush', true );
}
}
if ( $new_config->get_boolean( 'cdn.enabled' ) && ! Cdn_Util::is_engine_mirror( $new_config->get_string( 'cdn.engine' ) ) ) {
/**
* Show notification when CDN enabled
*/
if ( ! $old_config->get_boolean( 'cdn.enabled' ) ) {
$state = Dispatcher::config_state();
$state->set( 'cdn.show_note_cdn_upload', true );
$state->save();
}
/**
* Show notification when Browser Cache settings changes
*/
$cdn_dependencies = array( 'browsercache.enabled' );
if ( $new_config->get_boolean( 'cdn.enabled' ) ) {
$cdn_dependencies = array(
'browsercache.cssjs.compression',
'browsercache.cssjs.expires',
'browsercache.cssjs.lifetime',
'browsercache.cssjs.cache.control',
'browsercache.cssjs.cache.policy',
'browsercache.cssjs.etag',
'browsercache.cssjs.w3tc',
'browsercache.html.compression',
'browsercache.html.expires',
'browsercache.html.lifetime',
'browsercache.html.cache.control',
'browsercache.html.cache.policy',
'browsercache.html.etag',
'browsercache.html.w3tc',
'browsercache.other.compression',
'browsercache.other.expires',
'browsercache.other.lifetime',
'browsercache.other.cache.control',
'browsercache.other.cache.policy',
'browsercache.other.etag',
'browsercache.other.w3tc',
);
}
$old_cdn_dependencies_values = array();
$new_cdn_dependencies_values = array();
foreach ( $cdn_dependencies as $cdn_dependency ) {
$old_cdn_dependencies_values[] = $old_config->get( $cdn_dependency );
$new_cdn_dependencies_values[] = $new_config->get( $cdn_dependency );
}
if ( serialize( $old_cdn_dependencies_values ) !== serialize( $new_cdn_dependencies_values ) ) {
$state = Dispatcher::config_state();
$state->set( 'cdn.show_note_cdn_reupload', true );
$state->save();
}
}
/**
* Show need empty object cache notification
*/
if ( $current_config->getf_boolean( 'objectcache.enabled' ) ) {
$objectcache_dependencies = array(
'objectcache.groups.global',
'objectcache.groups.nonpersistent',
);
$old_objectcache_dependencies_values = array();
$new_objectcache_dependencies_values = array();
foreach ( $objectcache_dependencies as $objectcache_dependency ) {
$old_objectcache_dependencies_values[] = $old_config->get( $objectcache_dependency );
$new_objectcache_dependencies_values[] = $new_config->get( $objectcache_dependency );
}
if ( serialize( $old_objectcache_dependencies_values ) != serialize( $new_objectcache_dependencies_values ) ) {
$state_note = Dispatcher::config_state_note();
$state_note->set( 'objectcache.show_note.flush_needed', true );
}
}
do_action( 'w3tc_saved_options', $new_config );
/**
* Save config
*/
try {
$new_config->save();
} catch ( \Exception $ex ) {
// try to fix environment, it potentially can be fixed silently don't show error here, it will be called again later in admin_notices.
try {
$environment = Dispatcher::component( 'Root_Environment' );
$environment->fix_in_wpadmin( $new_config );
} catch ( \Exception $ex ) { // phpcs:ignore Generic.CodeAnalysis.EmptyStatement.DetectedCatch
// Do nothing.
}
// Retry save process and complain now on failure.
try {
$new_config->save();
} catch ( \Exception $ex ) {
throw new \Exception(
'<strong>Can\'t change configuration</strong>: ' . $ex->getMessage()
);
}
}
$w3_plugin_cdn = Dispatcher::component( 'Cdn_Core_Admin' );
/**
* Empty caches on engine change or cache enable/disable
*/
if ( $old_config->get_string( 'pgcache.engine' ) !=
$new_config->get_string( 'pgcache.engine' ) ||
$old_config->get_string( 'pgcache.enabled' ) !=
$new_config->get_string( 'pgcache.enabled' ) ) {
$pgcacheflush = Dispatcher::component( 'PgCache_Flush' );
$v = $pgcacheflush->flush();
}
if ( $old_config->get_string( 'dbcache.engine' ) != $new_config->get_string( 'dbcache.engine' ) || $old_config->get_string( 'dbcache.enabled' ) != $new_config->get_string( 'dbcache.enabled' ) ) {
w3tc_dbcache_flush();
}
if ( $old_config->get_string( 'objectcache.engine' ) != $new_config->get_string( 'objectcache.engine' ) || $old_config->getf_boolean( 'objectcache.enabled' ) !== $new_config->getf_boolean( 'objectcache.enabled' ) ) {
w3tc_objectcache_flush();
}
if ( $old_config->get_string( 'minify.engine' ) != $new_config->get_string( 'minify.engine' ) || $old_config->get_string( 'minify.enabled' ) != $new_config->get_string( 'minify.enabled' ) ) {
w3tc_minify_flush();
}
/**
* Update CloudFront CNAMEs
*/
if ( $new_config->get_boolean( 'cdn.enabled' ) && in_array( $new_config->get_string( 'cdn.engine' ), array( 'cf', 'cf2' ) ) ) {
if ( $new_config->get_string( 'cdn.engine' ) == 'cf' ) {
$old_cnames = $old_config->get_array( 'cdn.cf.cname' );
$new_cnames = $new_config->get_array( 'cdn.cf.cname' );
} else {
$old_cnames = $old_config->get_array( 'cdn.cf2.cname' );
$new_cnames = $new_config->get_array( 'cdn.cf2.cname' );
}
}
/**
* Refresh config
*/
$current_config->load();
/**
* React to config changes
*/
$environment = Dispatcher::component( 'Root_Environment' );
$environment->fix_on_event( $new_config, 'config_change', $old_config );
/**
* Auto upload browsercache files to CDN
*/
if ( $new_config->get_boolean( 'cdn.enabled' ) && $new_config->get_string( 'cdn.engine' ) == 'ftp' ) {
self::cdn_delete_browsercache( $current_config );
self::cdn_upload_browsercache( $current_config );
}
return true;
}
/**
* Uploads minify files to CDN.
*
* @static
*
* @return void
*/
public static function cdn_upload_minify() {
$w3_plugin_cdn = Dispatcher::component( 'Cdn_Plugin' );
$common = Dispatcher::component( 'Cdn_Core' );
$files = $w3_plugin_cdn->get_files_minify();
$upload = array();
$results = array();
foreach ( $files as $file ) {
$upload[] = $common->build_file_descriptor(
$common->docroot_filename_to_absolute_path( $file ),
$common->uri_to_cdn_uri( $common->docroot_filename_to_uri( $file ) )
);
}
$common->upload( $upload, true, $results );
}
/**
* Uploads Browser Cache .htaccess to FTP.
*
* @static
*
* @param Config $config Config.
* @return void
*/
public static function cdn_upload_browsercache( $config ) {
$common = Dispatcher::component( 'Cdn_Core' );
Dispatcher::component( 'Cdn_Core_Admin' );
$ce = Dispatcher::component( 'Cdn_Environment' );
$rules = $ce->rules_generate_for_ftp( $config );
if ( $config->get_boolean( 'browsercache.enabled' ) ) {
$be = Dispatcher::component( 'BrowserCache_Environment' );
$rules .= $be->rules_cache_generate_for_ftp( $config );
}
$cdn_path = Util_Rule::get_cdn_rules_path();
$tmp_path = W3TC_CACHE_TMP_DIR . '/' . $cdn_path;
if ( @file_put_contents( $tmp_path, $rules ) ) {
$results = array();
$upload = array( $common->build_file_descriptor( $tmp_path, $cdn_path ) );
$common->upload( $upload, true, $results );
}
}
/**
* Deletes Browser Cache .htaccess from FTP.
*
* @static
*
* @return void
*/
public static function cdn_delete_browsercache() {
$common = Dispatcher::component( 'Cdn_Core' );
$cdn_path = Util_Rule::get_cdn_rules_path();
$tmp_path = W3TC_CACHE_TMP_DIR . '/' . $cdn_path;
$results = array();
$delete = array( $common->build_file_descriptor( $tmp_path, $cdn_path ) );
$common->delete( $delete, false, $results );
}
/**
* Returns cookie domain.
*
* @static
*
* @return string
*/
public static function get_cookie_domain() {
$site_url = get_option( 'siteurl' );
$parse_url = @parse_url( $site_url );
if ( $parse_url && ! empty( $parse_url['host'] ) ) {
return $parse_url['host'];
}
return isset( $_SERVER['HTTP_HOST'] ) ? sanitize_text_field( wp_unslash( $_SERVER['HTTP_HOST'] ) ) : '';
}
/**
* Returns current w3tc admin page.
*
* @static
*
* @return string
*/
public static function get_current_page() {
$page = Util_Request::get_string( 'page' );
if ( substr( $page, 0, 5 ) === 'w3tc_' ) {
return $page;
}
return 'w3tc_dashboard';
}
/**
* Returns current w3tc extension id.
*
* @static
*
* @return string
*/
public static function get_current_extension() {
$page = Util_Request::get_string( 'page' );
$extension = Util_Request::get_string( 'extension' );
if ( substr( $page, 0, 5 ) === 'w3tc_' && ! empty( $extension ) ) {
return $extension;
}
return '';
}
/**
* Check if current page is a W3TC admin page.
*
* @static
*
* @return bool
*/
public static function is_w3tc_admin_page() {
$page_val = Util_Request::get_string( 'page' );
if ( ! empty( $page_val ) && 'w3tc_' === substr( $page_val, 0, 5 ) ) {
return true;
}
$action_val = Util_Request::get_string( 'action' );
if ( ! empty( $action_val ) && 'w3tc_' === substr( $action_val, 0, 5 ) ) {
return true;
}
return false;
}
/**
* Returns current WordPress page.
*
* @static
*
* @return string
*/
public static function get_current_wp_page() {
return Util_Request::get_string( 'page' );
}
}