getRequestTime(); * * @see https://www.drupal.org/node/2785211 */ define('REQUEST_TIME', (int) $_SERVER['REQUEST_TIME']); /** * Regular expression to match PHP function names. * * @see http://php.net/manual/language.functions.php */ const DRUPAL_PHP_FUNCTION_PATTERN = '[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*'; /** * $config_directories key for active directory. * * @see config_get_config_directory() * * @deprecated in Drupal 8.0.x and will be removed before 9.0.0. Drupal core no * longer creates an active directory. * * @see https://www.drupal.org/node/2501187 */ const CONFIG_ACTIVE_DIRECTORY = 'active'; /** * $config_directories key for sync directory. * * @see config_get_config_directory() */ const CONFIG_SYNC_DIRECTORY = 'sync'; /** * $config_directories key for staging directory. * * @see config_get_config_directory() * @see CONFIG_SYNC_DIRECTORY * * @deprecated in Drupal 8.0.x and will be removed before 9.0.0. The staging * directory was renamed to sync. * * @see https://www.drupal.org/node/2574957 */ const CONFIG_STAGING_DIRECTORY = 'staging'; /** * Defines the root directory of the Drupal installation. * * This strips two levels of directories off the current directory. */ define('DRUPAL_ROOT', dirname(dirname(__DIR__))); /** * Returns the path of a configuration directory. * * Configuration directories are configured using $config_directories in * settings.php. * * @param string $type * The type of config directory to return. Drupal core provides the * CONFIG_SYNC_DIRECTORY constant to access the sync directory. * * @return string * The configuration directory path. * * @throws \Exception */ function config_get_config_directory($type) { global $config_directories; // @todo Remove fallback in Drupal 9. https://www.drupal.org/node/2574943 if ($type == CONFIG_SYNC_DIRECTORY && !isset($config_directories[CONFIG_SYNC_DIRECTORY]) && isset($config_directories[CONFIG_STAGING_DIRECTORY])) { $type = CONFIG_STAGING_DIRECTORY; } if (!empty($config_directories[$type])) { return $config_directories[$type]; } // @todo https://www.drupal.org/node/2696103 Throw a more specific exception. throw new \Exception("The configuration directory type '$type' does not exist"); } /** * Returns and optionally sets the filename for a system resource. * * The filename, whether provided, cached, or retrieved from the database, is * only returned if the file exists. * * This function plays a key role in allowing Drupal's resources (modules * and themes) to be located in different places depending on a site's * configuration. For example, a module 'foo' may legally be located * in any of these three places: * * core/modules/foo/foo.info.yml * modules/foo/foo.info.yml * sites/example.com/modules/foo/foo.info.yml * * Calling drupal_get_filename('module', 'foo') will give you one of * the above, depending on where the module is located. * * @param $type * The type of the item; one of 'core', 'profile', 'module', 'theme', or * 'theme_engine'. * @param $name * The name of the item for which the filename is requested. Ignored for * $type 'core'. * @param $filename * The filename of the item if it is to be set explicitly rather * than by consulting the database. * * @return string * The filename of the requested item or NULL if the item is not found. */ function drupal_get_filename($type, $name, $filename = NULL) { // The location of files will not change during the request, so do not use // drupal_static(). static $files = []; // Type 'core' only exists to simplify application-level logic; it always maps // to the /core directory, whereas $name is ignored. It is only requested via // drupal_get_path(). /core/core.info.yml does not exist, but is required // since drupal_get_path() returns the dirname() of the returned pathname. if ($type === 'core') { return 'core/core.info.yml'; } if ($type === 'module' || $type === 'profile') { $service_id = 'extension.list.' . $type; /** @var \Drupal\Core\Extension\ExtensionList $extension_list */ $extension_list = \Drupal::service($service_id); if (isset($filename)) { // Manually add the info file path of an extension. $extension_list->setPathname($name, $filename); } try { return $extension_list->getPathname($name); } catch (UnknownExtensionException $e) { // Catch the exception. This will result in triggering an error. } } else { if (!isset($files[$type])) { $files[$type] = []; } if (isset($filename)) { $files[$type][$name] = $filename; } elseif (!isset($files[$type][$name])) { // If still unknown, retrieve the file list prepared in state by // \Drupal\Core\Extension\ExtensionList() and // \Drupal\Core\Extension\ThemeHandlerInterface::rebuildThemeData(). if (!isset($files[$type][$name]) && \Drupal::hasService('state')) { $files[$type] += \Drupal::state()->get('system.' . $type . '.files', []); } } if (isset($files[$type][$name])) { return $files[$type][$name]; } } // If the filename is still unknown, create a user-level error message. trigger_error(new FormattableMarkup('The following @type is missing from the file system: @name', ['@type' => $type, '@name' => $name]), E_USER_WARNING); } /** * Returns the path to a system item (module, theme, etc.). * * @param $type * The type of the item; one of 'core', 'profile', 'module', 'theme', or * 'theme_engine'. * @param $name * The name of the item for which the path is requested. Ignored for * $type 'core'. * * @return string * The path to the requested item or an empty string if the item is not found. */ function drupal_get_path($type, $name) { return dirname(drupal_get_filename($type, $name)); } /** * Translates a string to the current language or to a given language. * * In order for strings to be localized, make them available in one of the ways * supported by the @link i18n Localization API. @endlink When possible, use * the \Drupal\Core\StringTranslation\StringTranslationTrait $this->t(). * Otherwise create a new \Drupal\Core\StringTranslation\TranslatableMarkup * object directly. * * See \Drupal\Core\StringTranslation\TranslatableMarkup::__construct() for * important security information and usage guidelines. * * @param string $string * A string containing the English text to translate. * @param array $args * (optional) An associative array of replacements to make after translation. * Based on the first character of the key, the value is escaped and/or * themed. See * \Drupal\Component\Render\FormattableMarkup::placeholderFormat() for * details. * @param array $options * (optional) An associative array of additional options, with the following * elements: * - 'langcode' (defaults to the current language): A language code, to * translate to a language other than what is used to display the page. * - 'context' (defaults to the empty context): The context the source string * belongs to. See the @link i18n Internationalization topic @endlink for * more information about string contexts. * * @return \Drupal\Core\StringTranslation\TranslatableMarkup * An object that, when cast to a string, returns the translated string. * * @see \Drupal\Component\Render\FormattableMarkup::placeholderFormat() * @see \Drupal\Core\StringTranslation\StringTranslationTrait::t() * @see \Drupal\Core\StringTranslation\TranslatableMarkup::__construct() * * @ingroup sanitization */ function t($string, array $args = [], array $options = []) { return new TranslatableMarkup($string, $args, $options); } /** * Formats a string for HTML display by replacing variable placeholders. * * @see \Drupal\Component\Render\FormattableMarkup::placeholderFormat() * @see \Drupal\Component\Render\FormattableMarkup * @see t() * @ingroup sanitization * * @deprecated in Drupal 8.0.0, will be removed before Drupal 9.0.0. * Use \Drupal\Component\Render\FormattableMarkup. * * @see https://www.drupal.org/node/2302363 */ function format_string($string, array $args) { return new FormattableMarkup($string, $args); } /** * Checks whether a string is valid UTF-8. * * All functions designed to filter input should use drupal_validate_utf8 * to ensure they operate on valid UTF-8 strings to prevent bypass of the * filter. * * When text containing an invalid UTF-8 lead byte (0xC0 - 0xFF) is presented * as UTF-8 to Internet Explorer 6, the program may misinterpret subsequent * bytes. When these subsequent bytes are HTML control characters such as * quotes or angle brackets, parts of the text that were deemed safe by filters * end up in locations that are potentially unsafe; An onerror attribute that * is outside of a tag, and thus deemed safe by a filter, can be interpreted * by the browser as if it were inside the tag. * * The function does not return FALSE for strings containing character codes * above U+10FFFF, even though these are prohibited by RFC 3629. * * @param $text * The text to check. * * @return bool * TRUE if the text is valid UTF-8, FALSE if not. * * @see \Drupal\Component\Utility\Unicode::validateUtf8() * * @deprecated in Drupal 8.0.0, will be removed before Drupal 9.0.0. * Use \Drupal\Component\Utility\Unicode::validateUtf8(). * * @see https://www.drupal.org/node/1992584 */ function drupal_validate_utf8($text) { return Unicode::validateUtf8($text); } /** * Logs an exception. * * This is a wrapper logging function which automatically decodes an exception. * * @param $type * The category to which this message belongs. * @param $exception * The exception that is going to be logged. * @param $message * The message to store in the log. If empty, a text that contains all useful * information about the passed-in exception is used. * @param $variables * Array of variables to replace in the message on display or * NULL if message is already translated or not possible to * translate. * @param $severity * The severity of the message, as per RFC 3164. * @param $link * A link to associate with the message. * * @see \Drupal\Core\Utility\Error::decodeException() */ function watchdog_exception($type, Exception $exception, $message = NULL, $variables = [], $severity = RfcLogLevel::ERROR, $link = NULL) { // Use a default value if $message is not set. if (empty($message)) { $message = '%type: @message in %function (line %line of %file).'; } if ($link) { $variables['link'] = $link; } $variables += Error::decodeException($exception); \Drupal::logger($type)->log($severity, $message, $variables); } /** * Sets a message to display to the user. * * Messages are stored in a session variable and displayed in the page template * via the $messages theme variable. * * Example usage: * @code * drupal_set_message(t('An error occurred and processing did not complete.'), 'error'); * @endcode * * @param string|\Drupal\Component\Render\MarkupInterface $message * (optional) The translated message to be displayed to the user. For * consistency with other messages, it should begin with a capital letter and * end with a period. * @param string $type * (optional) The message's type. Defaults to 'status'. These values are * supported: * - 'status' * - 'warning' * - 'error' * @param bool $repeat * (optional) If this is FALSE and the message is already set, then the * message won't be repeated. Defaults to FALSE. * * @return array|null * A multidimensional array with keys corresponding to the set message types. * The indexed array values of each contain the set messages for that type, * and each message is an associative array with the following format: * - safe: Boolean indicating whether the message string has been marked as * safe. Non-safe strings will be escaped automatically. * - message: The message string. * So, the following is an example of the full return array structure: * @code * array( * 'status' => array( * array( * 'safe' => TRUE, * 'message' => 'A safe markup string.', * ), * array( * 'safe' => FALSE, * 'message' => "$arbitrary_user_input to escape.", * ), * ), * ); * @endcode * If there are no messages set, the function returns NULL. * * @see drupal_get_messages() * @see status-messages.html.twig * @see https://www.drupal.org/node/2774931 * * @deprecated in Drupal 8.5.0 and will be removed before Drupal 9.0.0. * Use \Drupal\Core\Messenger\MessengerInterface::addMessage() instead. */ function drupal_set_message($message = NULL, $type = 'status', $repeat = FALSE) { @trigger_error('drupal_set_message() is deprecated in Drupal 8.5.0 and will be removed before Drupal 9.0.0. Use \Drupal\Core\Messenger\MessengerInterface::addMessage() instead. See https://www.drupal.org/node/2774931', E_USER_DEPRECATED); $messenger = \Drupal::messenger(); if (isset($message)) { $messenger->addMessage($message, $type, $repeat); } return $messenger->all(); } /** * Returns all messages that have been set with drupal_set_message(). * * @param string $type * (optional) Limit the messages returned by type. Defaults to NULL, meaning * all types. These values are supported: * - NULL * - 'status' * - 'warning' * - 'error' * @param bool $clear_queue * (optional) If this is TRUE, the queue will be cleared of messages of the * type specified in the $type parameter. Otherwise the queue will be left * intact. Defaults to TRUE. * * @return array * An associative, nested array of messages grouped by message type, with * the top-level keys as the message type. The messages returned are * limited to the type specified in the $type parameter, if any. If there * are no messages of the specified type, an empty array is returned. See * drupal_set_message() for the array structure of individual messages. * * @see drupal_set_message() * @see status-messages.html.twig * @see https://www.drupal.org/node/2774931 * * @deprecated in Drupal 8.5.0 and will be removed before Drupal 9.0.0. * Use \Drupal\Core\Messenger\MessengerInterface::all() or * \Drupal\Core\Messenger\MessengerInterface::messagesByType() instead. */ function drupal_get_messages($type = NULL, $clear_queue = TRUE) { @trigger_error('drupal_get_message() is deprecated in Drupal 8.5.0 and will be removed before Drupal 9.0.0. Use \Drupal\Core\Messenger\MessengerInterface::all() or \Drupal\Core\Messenger\MessengerInterface::messagesByType() instead. See https://www.drupal.org/node/2774931', E_USER_DEPRECATED); $messenger = \Drupal::messenger(); if ($messages = $messenger->all()) { if ($type) { if ($clear_queue) { $messenger->deleteByType($type); } if (isset($messages[$type])) { return [$type => $messages[$type]]; } } else { if ($clear_queue) { $messenger->deleteAll(); } return $messages; } } return []; } /** * Returns the time zone of the current user. * * @return string * The name of the current user's timezone or the name of the default timezone. */ function drupal_get_user_timezone() { $user = \Drupal::currentUser(); $config = \Drupal::config('system.date'); if ($user && $config->get('timezone.user.configurable') && $user->isAuthenticated() && $user->getTimezone()) { return $user->getTimezone(); } else { // Ignore PHP strict notice if time zone has not yet been set in the php.ini // configuration. $config_data_default_timezone = $config->get('timezone.default'); return !empty($config_data_default_timezone) ? $config_data_default_timezone : @date_default_timezone_get(); } } /** * Provides custom PHP error handling. * * @param $error_level * The level of the error raised. * @param $message * The error message. * @param $filename * (optional) The filename that the error was raised in. * @param $line * (optional) The line number the error was raised at. * @param $context * (optional) An array that points to the active symbol table at the point the * error occurred. */ function _drupal_error_handler($error_level, $message, $filename = NULL, $line = NULL, $context = NULL) { require_once __DIR__ . '/errors.inc'; _drupal_error_handler_real($error_level, $message, $filename, $line, $context); } /** * Provides custom PHP exception handling. * * Uncaught exceptions are those not enclosed in a try/catch block. They are * always fatal: the execution of the script will stop as soon as the exception * handler exits. * * @param \Exception|\Throwable $exception * The exception object that was thrown. */ function _drupal_exception_handler($exception) { require_once __DIR__ . '/errors.inc'; try { // Log the message to the watchdog and return an error page to the user. _drupal_log_error(Error::decodeException($exception), TRUE); } // PHP 7 introduces Throwable, which covers both Error and // Exception throwables. catch (\Throwable $error) { _drupal_exception_handler_additional($exception, $error); } // In order to be compatible with PHP 5 we also catch regular Exceptions. catch (\Exception $exception2) { _drupal_exception_handler_additional($exception, $exception2); } } /** * Displays any additional errors caught while handling an exception. * * @param \Exception|\Throwable $exception * The first exception object that was thrown. * @param \Exception|\Throwable $exception2 * The second exception object that was thrown. */ function _drupal_exception_handler_additional($exception, $exception2) { // Another uncaught exception was thrown while handling the first one. // If we are displaying errors, then do so with no possibility of a further // uncaught exception being thrown. if (error_displayable()) { print '

Additional uncaught exception thrown while handling exception.

'; print '

Original

' . Error::renderExceptionSafe($exception) . '

'; print '

Additional

' . Error::renderExceptionSafe($exception2) . '


'; } } /** * Returns the test prefix if this is an internal request from SimpleTest. * * @param string $new_prefix * Internal use only. A new prefix to be stored. * * @return string|false * Either the simpletest prefix (the string "simpletest" followed by any * number of digits) or FALSE if the user agent does not contain a valid * HMAC and timestamp. */ function drupal_valid_test_ua($new_prefix = NULL) { static $test_prefix; if (isset($new_prefix)) { $test_prefix = $new_prefix; } if (isset($test_prefix)) { return $test_prefix; } // Unless the below User-Agent and HMAC validation succeeds, we are not in // a test environment. $test_prefix = FALSE; // A valid Simpletest request will contain a hashed and salted authentication // code. Check if this code is present in a cookie or custom user agent // string. $http_user_agent = isset($_SERVER['HTTP_USER_AGENT']) ? $_SERVER['HTTP_USER_AGENT'] : NULL; $user_agent = isset($_COOKIE['SIMPLETEST_USER_AGENT']) ? $_COOKIE['SIMPLETEST_USER_AGENT'] : $http_user_agent; if (isset($user_agent) && preg_match("/^simple(\w+\d+):(.+):(.+):(.+)$/", $user_agent, $matches)) { list(, $prefix, $time, $salt, $hmac) = $matches; $check_string = $prefix . ':' . $time . ':' . $salt; // Read the hash salt prepared by drupal_generate_test_ua(). // This function is called before settings.php is read and Drupal's error // handlers are set up. While Drupal's error handling may be properly // configured on production sites, the server's PHP error_reporting may not. // Ensure that no information leaks on production sites. $test_db = new TestDatabase($prefix); $key_file = DRUPAL_ROOT . '/' . $test_db->getTestSitePath() . '/.htkey'; if (!is_readable($key_file)) { header($_SERVER['SERVER_PROTOCOL'] . ' 403 Forbidden'); exit; } $private_key = file_get_contents($key_file); // The file properties add more entropy not easily accessible to others. $key = $private_key . filectime(__FILE__) . fileinode(__FILE__); $time_diff = REQUEST_TIME - $time; $test_hmac = Crypt::hmacBase64($check_string, $key); // Since we are making a local request a 600 second time window is allowed, // and the HMAC must match. if ($time_diff >= 0 && $time_diff <= 600 && $hmac === $test_hmac) { $test_prefix = $prefix; } else { header($_SERVER['SERVER_PROTOCOL'] . ' 403 Forbidden (SIMPLETEST_USER_AGENT invalid)'); exit; } } return $test_prefix; } /** * Generates a user agent string with a HMAC and timestamp for simpletest. */ function drupal_generate_test_ua($prefix) { static $key, $last_prefix; if (!isset($key) || $last_prefix != $prefix) { $last_prefix = $prefix; $test_db = new TestDatabase($prefix); $key_file = DRUPAL_ROOT . '/' . $test_db->getTestSitePath() . '/.htkey'; // When issuing an outbound HTTP client request from within an inbound test // request, then the outbound request has to use the same User-Agent header // as the inbound request. A newly generated private key for the same test // prefix would invalidate all subsequent inbound requests. // @see \Drupal\Core\Http\Plugin\SimpletestHttpRequestSubscriber if (DRUPAL_TEST_IN_CHILD_SITE && $parent_prefix = drupal_valid_test_ua()) { if ($parent_prefix != $prefix) { throw new \RuntimeException("Malformed User-Agent: Expected '$parent_prefix' but got '$prefix'."); } // If the file is not readable, a PHP warning is expected in this case. $private_key = file_get_contents($key_file); } else { // Generate and save a new hash salt for a test run. // Consumed by drupal_valid_test_ua() before settings.php is loaded. $private_key = Crypt::randomBytesBase64(55); file_put_contents($key_file, $private_key); } // The file properties add more entropy not easily accessible to others. $key = $private_key . filectime(__FILE__) . fileinode(__FILE__); } // Generate a moderately secure HMAC based on the database credentials. $salt = uniqid('', TRUE); $check_string = $prefix . ':' . time() . ':' . $salt; return 'simple' . $check_string . ':' . Crypt::hmacBase64($check_string, $key); } /** * Enables use of the theme system without requiring database access. * * Loads and initializes the theme system for site installs, updates and when * the site is in maintenance mode. This also applies when the database fails. * * @see _drupal_maintenance_theme() */ function drupal_maintenance_theme() { require_once __DIR__ . '/theme.maintenance.inc'; _drupal_maintenance_theme(); } /** * Returns TRUE if a Drupal installation is currently being attempted. */ function drupal_installation_attempted() { // This cannot rely on the MAINTENANCE_MODE constant, since that would prevent // tests from using the non-interactive installer, in which case Drupal // only happens to be installed within the same request, but subsequently // executed code does not involve the installer at all. // @see install_drupal() return isset($GLOBALS['install_state']) && empty($GLOBALS['install_state']['installation_finished']); } /** * Gets the name of the currently active installation profile. * * When this function is called during Drupal's initial installation process, * the name of the profile that's about to be installed is stored in the global * installation state. At all other times, the "install_profile" setting will be * available in container as a parameter. * * @return string|null * The name of the installation profile or NULL if no installation profile is * currently active. This is the case for example during the first steps of * the installer or during unit tests. * * @deprecated in Drupal 8.3.0, will be removed before Drupal 9.0.0. * Use the install_profile container parameter or \Drupal::installProfile() * instead. If you are accessing the value before it is written to * configuration during the installer use the $install_state global. If you * need to access the value before container is available you can use * BootstrapConfigStorageFactory to load the value directly from * configuration. * * @see https://www.drupal.org/node/2538996 */ function drupal_get_profile() { global $install_state; if (drupal_installation_attempted()) { // If the profile has been selected return it. if (isset($install_state['parameters']['profile'])) { $profile = $install_state['parameters']['profile']; } else { $profile = NULL; } } else { if (\Drupal::hasContainer()) { $profile = \Drupal::installProfile(); } else { $profile = BootstrapConfigStorageFactory::getDatabaseStorage()->read('core.extension')['profile']; } } return $profile; } /** * Registers an additional namespace. * * @param string $name * The namespace component to register; e.g., 'node'. * @param string $path * The relative path to the Drupal component in the filesystem. */ function drupal_classloader_register($name, $path) { $loader = \Drupal::service('class_loader'); $loader->addPsr4('Drupal\\' . $name . '\\', \Drupal::root() . '/' . $path . '/src'); } /** * Provides central static variable storage. * * All functions requiring a static variable to persist or cache data within * a single page request are encouraged to use this function unless it is * absolutely certain that the static variable will not need to be reset during * the page request. By centralizing static variable storage through this * function, other functions can rely on a consistent API for resetting any * other function's static variables. * * Example: * @code * function example_list($field = 'default') { * $examples = &drupal_static(__FUNCTION__); * if (!isset($examples)) { * // If this function is being called for the first time after a reset, * // query the database and execute any other code needed to retrieve * // information. * ... * } * if (!isset($examples[$field])) { * // If this function is being called for the first time for a particular * // index field, then execute code needed to index the information already * // available in $examples by the desired field. * ... * } * // Subsequent invocations of this function for a particular index field * // skip the above two code blocks and quickly return the already indexed * // information. * return $examples[$field]; * } * function examples_admin_overview() { * // When building the content for the overview page, make sure to get * // completely fresh information. * drupal_static_reset('example_list'); * ... * } * @endcode * * In a few cases, a function can have certainty that there is no legitimate * use-case for resetting that function's static variable. This is rare, * because when writing a function, it's hard to forecast all the situations in * which it will be used. A guideline is that if a function's static variable * does not depend on any information outside of the function that might change * during a single page request, then it's ok to use the "static" keyword * instead of the drupal_static() function. * * Example: * @code * function mymodule_log_stream_handle($new_handle = NULL) { * static $handle; * if (isset($new_handle)) { * $handle = $new_handle; * } * return $handle; * } * @endcode * * In a few cases, a function needs a resettable static variable, but the * function is called many times (100+) during a single page request, so * every microsecond of execution time that can be removed from the function * counts. These functions can use a more cumbersome, but faster variant of * calling drupal_static(). It works by storing the reference returned by * drupal_static() in the calling function's own static variable, thereby * removing the need to call drupal_static() for each iteration of the function. * Conceptually, it replaces: * @code * $foo = &drupal_static(__FUNCTION__); * @endcode * with: * @code * // Unfortunately, this does not work. * static $foo = &drupal_static(__FUNCTION__); * @endcode * However, the above line of code does not work, because PHP only allows static * variables to be initialized by literal values, and does not allow static * variables to be assigned to references. * - http://php.net/manual/language.variables.scope.php#language.variables.scope.static * - http://php.net/manual/language.variables.scope.php#language.variables.scope.references * The example below shows the syntax needed to work around both limitations. * For benchmarks and more information, see https://www.drupal.org/node/619666. * * Example: * @code * function example_default_format_type() { * // Use the advanced drupal_static() pattern, since this is called very often. * static $drupal_static_fast; * if (!isset($drupal_static_fast)) { * $drupal_static_fast['format_type'] = &drupal_static(__FUNCTION__); * } * $format_type = &$drupal_static_fast['format_type']; * ... * } * @endcode * * @param $name * Globally unique name for the variable. For a function with only one static, * variable, the function name (e.g. via the PHP magic __FUNCTION__ constant) * is recommended. For a function with multiple static variables add a * distinguishing suffix to the function name for each one. * @param $default_value * Optional default value. * @param $reset * TRUE to reset one or all variables(s). This parameter is only used * internally and should not be passed in; use drupal_static_reset() instead. * (This function's return value should not be used when TRUE is passed in.) * * @return array * Returns a variable by reference. * * @see drupal_static_reset() */ function &drupal_static($name, $default_value = NULL, $reset = FALSE) { static $data = [], $default = []; // First check if dealing with a previously defined static variable. if (isset($data[$name]) || array_key_exists($name, $data)) { // Non-NULL $name and both $data[$name] and $default[$name] statics exist. if ($reset) { // Reset pre-existing static variable to its default value. $data[$name] = $default[$name]; } return $data[$name]; } // Neither $data[$name] nor $default[$name] static variables exist. if (isset($name)) { if ($reset) { // Reset was called before a default is set and yet a variable must be // returned. return $data; } // First call with new non-NULL $name. Initialize a new static variable. $default[$name] = $data[$name] = $default_value; return $data[$name]; } // Reset all: ($name == NULL). This needs to be done one at a time so that // references returned by earlier invocations of drupal_static() also get // reset. foreach ($default as $name => $value) { $data[$name] = $value; } // As the function returns a reference, the return should always be a // variable. return $data; } /** * Resets one or all centrally stored static variable(s). * * @param $name * Name of the static variable to reset. Omit to reset all variables. * Resetting all variables should only be used, for example, for running * unit tests with a clean environment. */ function drupal_static_reset($name = NULL) { drupal_static($name, NULL, TRUE); } /** * Formats text for emphasized display in a placeholder inside a sentence. * * @deprecated in Drupal 8.0.0, will be removed before Drupal 9.0.0. Use * \Drupal\Component\Render\FormattableMarkup or Twig's "placeholder" filter * instead. Note this method should not be used to simply emphasize a string * and therefore has few valid use-cases. Note also, that this method does not * mark the string as safe. * * @see https://www.drupal.org/node/2302363 */ function drupal_placeholder($text) { return '' . Html::escape($text) . ''; } /** * Registers a function for execution on shutdown. * * Wrapper for register_shutdown_function() that catches thrown exceptions to * avoid "Exception thrown without a stack frame in Unknown". * * @param callable $callback * The shutdown function to register. * @param ... * Additional arguments to pass to the shutdown function. * * @return array * Array of shutdown functions to be executed. * * @see register_shutdown_function() * @ingroup php_wrappers */ function &drupal_register_shutdown_function($callback = NULL) { // We cannot use drupal_static() here because the static cache is reset during // batch processing, which breaks batch handling. static $callbacks = []; if (isset($callback)) { // Only register the internal shutdown function once. if (empty($callbacks)) { register_shutdown_function('_drupal_shutdown_function'); } $args = func_get_args(); // Remove $callback from the arguments. unset($args[0]); // Save callback and arguments $callbacks[] = ['callback' => $callback, 'arguments' => $args]; } return $callbacks; } /** * Executes registered shutdown functions. */ function _drupal_shutdown_function() { $callbacks = &drupal_register_shutdown_function(); // Set the CWD to DRUPAL_ROOT as it is not guaranteed to be the same as it // was in the normal context of execution. chdir(DRUPAL_ROOT); try { reset($callbacks); // Do not use foreach() here because it is possible that the callback will // add to the $callbacks array via drupal_register_shutdown_function(). while ($callback = current($callbacks)) { call_user_func_array($callback['callback'], $callback['arguments']); next($callbacks); } } // PHP 7 introduces Throwable, which covers both Error and // Exception throwables. catch (\Throwable $error) { _drupal_shutdown_function_handle_exception($error); } // In order to be compatible with PHP 5 we also catch regular Exceptions. catch (\Exception $exception) { _drupal_shutdown_function_handle_exception($exception); } } /** * Displays and logs any errors that may happen during shutdown. * * @param \Exception|\Throwable $exception * The exception object that was thrown. * * @see _drupal_shutdown_function() */ function _drupal_shutdown_function_handle_exception($exception) { // If using PHP-FPM then fastcgi_finish_request() will have been fired // preventing further output to the browser. if (!function_exists('fastcgi_finish_request')) { // If we are displaying errors, then do so with no possibility of a // further uncaught exception being thrown. require_once __DIR__ . '/errors.inc'; if (error_displayable()) { print '

Uncaught exception thrown in shutdown function.

'; print '

' . Error::renderExceptionSafe($exception) . '


'; } } error_log($exception); }