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<?php
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/**
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* @file
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* Provides frequently used functions that get theme info, settings and
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* other data.
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*/
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/**
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* Retrieve a setting for the current theme or for a given theme.
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*
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* AT's stripped down optimized version of theme_get_setting().
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* Why? Because it wayfasterbetter, emphasis on the faster which is really the
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* only valid reason to do something as stupid as this, and it is faster,
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* considerably faster. Doing this wiped 100ms off page generation time.
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*
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* @param $setting_name
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* @param null $theme
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* @see http://api.drupal.org/api/drupal/includes!theme.inc/function/theme_get_setting/7
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*/
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function at_get_setting($setting_name, $theme = NULL) {
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$cache = &drupal_static(__FUNCTION__, array());
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// If no key is given, use the current theme if we can determine it.
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if (!isset($theme)) {
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$theme = !empty($GLOBALS['theme_key']) ? $GLOBALS['theme_key'] : '';
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}
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if (empty($cache[$theme])) {
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// Get the values for the theme-specific settings from the .info files
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if ($theme) {
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$themes = list_themes();
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$theme_object = $themes[$theme];
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// Create a list which includes the current theme and all its base themes.
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if (isset($theme_object->base_themes)) {
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$theme_keys = array_keys($theme_object->base_themes);
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$theme_keys[] = $theme;
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}
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else {
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$theme_keys = array($theme);
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}
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foreach ($theme_keys as $theme_key) {
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if (!empty($themes[$theme_key]->info['settings'])) {
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$cache[$theme] = $themes[$theme_key]->info['settings'];
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}
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}
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// Get the saved theme-specific settings from the database.
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$cache[$theme] = array_merge($cache[$theme], variable_get('theme_' . $theme . '_settings', array()));
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}
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}
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return isset($cache[$theme][$setting_name]) ? $cache[$theme][$setting_name] : NULL;
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}
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/**
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* Return the info file array for a particular theme, usually the active theme.
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* Simple wrapper function for list_themes().
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*
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* @param $theme_name
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*/
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function at_get_info($theme_name) {
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$info = &drupal_static(__FUNCTION__, array());
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if (empty($info)) {
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$lt = list_themes();
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foreach ($lt as $key => $value) {
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if ($theme_name == $key) {
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$info = $lt[$theme_name]->info;
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}
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}
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}
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return $info;
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}
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/**
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* Returns an array keyed by theme name.
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*
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* Return the all the info file data for a particular theme including base
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* themes. Parts of this function are shamelessly ripped from Drupal core's
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* _drupal_theme_initialize().
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*
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* @param $theme_name, usually the active theme.
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*/
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function at_get_info_trail($theme_name) {
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$info_trail = &drupal_static(__FUNCTION__, array());
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if (empty($info_trail)) {
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$lt = list_themes();
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// First check for base themes and get info
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$base_theme = array();
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$ancestor = $theme_name;
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while ($ancestor && isset($lt[$ancestor]->base_theme)) {
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$ancestor = $lt[$ancestor]->base_theme;
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$base_theme[] = $lt[$ancestor];
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}
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foreach ($base_theme as $base) {
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$info_trail[$base->name]['info'] = $base->info;
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}
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// Now the active theme
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$info_trail[$theme_name]['info'] = $lt[$theme_name]->info;
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}
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return $info_trail;
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}
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/**
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* Return lists of CSS files to unset.
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*
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* This returns a very small amount of data (< 10kb), but is very expensive
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* to get which is why its cached in the database. Without caching the theme
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* settings page takes at least 8 seconds to load if the Unset CSS extension
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* is enabled, and thats no fun.
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*
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* @param $theme_name, usually the active theme.
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*/
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function at_get_css_files($theme_name) {
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$styles = &drupal_static(__FUNCTION__, array());
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if (empty($styles)) {
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if ($cache = cache_get('at_get_css_files')) {
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$styles = $cache->data;
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}
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else {
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// Contrib module
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$module_data = system_rebuild_module_data();
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foreach ($module_data as $module => $data) {
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if ($data->status && !empty($data->info['stylesheets'])) {
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foreach ($data->info['stylesheets'] as $media => $content) {
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foreach ($content as $file) {
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$styles[$file] = array(
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'type' => 'contrib',
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'source' => $module,
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);
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}
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}
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}
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}
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// Libraries
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if (module_exists('libraries')) {
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$libraries = libraries_get_libraries();
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$extension = 'css';
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foreach ($libraries as $lib) {
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$files = file_scan_directory($lib, '/\.' . $extension . '$/', array('recurse' => TRUE));
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$libraries[$lib] = $files;
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}
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foreach ($libraries as $lib_key => $library) {
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if (is_array($library) && !empty($library)) {
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foreach ($library as $lib_file) {
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$styles[$lib_file->uri] = array(
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'type' => 'library',
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'source' => $lib_file->uri,
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);
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}
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}
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}
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}
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// Theme info defined files
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$info_data = at_get_info_trail($theme_name);
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foreach ($info_data as $provider => $theme_info) {
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foreach ($theme_info as $this_info => $info) {
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if ($this_info == 'info') {
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// AT Core defined
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if (isset($info['unset_core'])) {
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foreach ($info['unset_core'] as $module_path => $description) {
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$styles[$module_path] = array(
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'type' => 'unset_core',
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'source' => $description,
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);
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}
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}
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// Active theme defined explicit excludes
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if (isset($info['unset_css'])) {
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foreach ($info['unset_css'] as $module_path => $description) {
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$styles[$module_path] = array(
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'type' => 'user_defined',
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'source' => $description,
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);
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}
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}
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// Active theme and ancestors, never show in admin
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foreach ($info['stylesheets'] as $media => $stylesheets) {
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foreach ($stylesheets as $file => $path) {
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$styles[$path] = array(
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'type' => 'theme',
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'source' => $provider,
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);
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}
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}
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}
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}
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}
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cache_set('at_get_css_files', $styles, 'cache');
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}
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}
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return $styles;
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}
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/**
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* Return a device context.
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* Wrapper for mobile_detect_get_object() and
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* browscap_get_browser().
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*/
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function at_get_browser() {
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$browser = &drupal_static(__FUNCTION__, array());
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if (empty($browser)) {
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$browser['is_mobile'] = NULL;
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$browser['is_tablet'] = NULL;
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if (function_exists('mobile_detect_get_object')) {
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$detect = mobile_detect_get_object();
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if ($detect) {
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$browser['is_mobile'] = $detect->isMobile();
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$browser['is_tablet'] = $detect->isTablet();
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}
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}
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else if (function_exists('browscap_get_browser')) {
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$browscap = browscap_get_browser();
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if ($browscap) {
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if (filter_var($browscap['ismobiledevice'], FILTER_VALIDATE_BOOLEAN) == TRUE) {
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$browser['is_mobile'] = TRUE;
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}
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}
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}
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}
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return $browser;
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}
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