PHP false类代码示例

 /**
  * Get device features
  * 
  * @return Application_Model_Device
  */
 public function getDevice()
 {
     if ($this->device == null) {
         $this->device = false;
         $devices = Application_Model_DevicesMapper::i()->fetchAll();
         /* @var Application_Model_Device $device */
         foreach ($devices as $device) {
             // if exact do an == comparison
             if ($device->isExact() && $device->getPattern() == $_SERVER['HTTP_USER_AGENT'] || !$device->isExact() && preg_match($device->getPattern(), $_SERVER['HTTP_USER_AGENT']) > 0) {
                 // valid $device found;
                 $this->device = $device;
                 break;
             }
         }
         if ($this->device == false) {
             // load things from default
             $this->device = new Application_Model_Device();
             if (X_VlcShares_Plugins::broker()->isRegistered('wiimc')) {
                 $this->device->setGuiClass($this->options->get('gui', 'X_VlcShares_Plugins_WiimcPlxRenderer'));
             } else {
                 $this->device->setGuiClass($this->options->get('gui', 'X_VlcShares_Plugins_WebkitRenderer'));
             }
             $this->device->setIdProfile($this->options->get('profile', 1))->setLabel("Unknown device");
         }
     }
     return $this->device;
 }

 /**
  * @return bool|\Dingo\Api\Models\ApiKey
  */
 protected function pullApiKey()
 {
     $headers = ['ID', 'Service', 'Name', 'Token'];
     $this->table($headers, $this->user->apiKeys()->get(['id', 'service', 'name', 'token']));
     $key_id = $this->ask('What key are we using?');
     if ($key_id === 'exit') {
         exit;
     }
     if ($key = $this->user->apiKeys()->where('id', $key_id)->first()) {
         return $key;
     }
     $this->error('ApiKey ' . $key_id . ' not found!');
     return false;
 }

 /**
  * Migrate constructor
  *
  * @param string $dirname module directory name that defines the tables to be migrated
  *
  * @throws \InvalidArgumentException
  * @throws \RuntimeException
  */
 public function __construct($dirname)
 {
     $this->helper = Helper::getHelper($dirname);
     if (false === $this->helper) {
         throw new \InvalidArgumentException("Invalid module {$dirname} specified");
     }
     $module = $this->helper->getModule();
     $this->moduleTables = $module->getInfo('tables');
     if (empty($this->moduleTables)) {
         throw new \RuntimeException("No tables established in module");
     }
     $version = $module->getInfo('version');
     $this->tableDefinitionFile = $this->helper->path("sql/{$dirname}_{$version}_migrate.yml");
     $this->tableHandler = new Tables();
 }

 /**
  * Save image information to DB.
  *
  * @param \Magento\Catalog\Model\Product $product
  * @param array $images
  * @return void
  */
 protected function storeImage($product, $images)
 {
     $baseImage = '';
     $i = 1;
     $mediaAttribute = $this->eavConfig->getAttribute('catalog_product', 'media_gallery');
     foreach ($images as $image) {
         if (empty($image)) {
             $this->errors[] = $product->getSku();
             continue;
         }
         if (strpos($image, '_main') !== false) {
             $baseImage = $image;
         }
         $id = $this->galleryResource->insertGallery(['attribute_id' => $mediaAttribute->getAttributeId(), 'entity_id' => $product->getId(), 'value' => $image]);
         $this->galleryResource->insertGalleryValueInStore(['value_id' => $id, 'store_id' => \Magento\Store\Model\Store::DEFAULT_STORE_ID, 'entity_id' => $product->getId(), 'label' => 'Image', 'position' => $i, 'disables' => 0]);
         $this->galleryResource->bindValueToEntity($id, $product->getId());
         $i++;
     }
     if (empty($baseImage)) {
         $baseImage = $images[0];
     }
     if ($baseImage) {
         $imageAttribute = $product->getResource()->getAttribute('image');
         $smallImageAttribute = $product->getResource()->getAttribute('small_image');
         $thumbnailAttribute = $product->getResource()->getAttribute('thumbnail');
         $adapter = $product->getResource()->getConnection();
         foreach ([$imageAttribute, $smallImageAttribute, $thumbnailAttribute] as $attribute) {
             $table = $imageAttribute->getBackend()->getTable();
             /** @var \Magento\Framework\DB\Adapter\AdapterInterface $adapter*/
             $data = [$attribute->getBackend()->getEntityIdField() => $product->getId(), 'attribute_id' => $attribute->getId(), 'value' => $baseImage];
             $adapter->insertOnDuplicate($table, $data, ['value']);
         }
     }
 }

 /**
  * Returns the site with provided global id, or false if there is no such site.
  *
  * @since 1.21
  *
  * @param string $globalId
  * @param string $source
  *
  * @return Site|false
  */
 public function getSite($globalId, $source = 'cache')
 {
     if ($source === 'cache' && $this->sites !== false) {
         return $this->sites->hasSite($globalId) ? $this->sites->getSite($globalId) : false;
     }
     return SitesTable::singleton()->selectRow(null, array('global_key' => $globalId));
 }

 /**
  * Send a mail using this transport
  *
  * @param  \Zend\Mail\Mail $mail
  * @access public
  * @return void
  * @throws \Zend\Mail\Transport\Exception if mail is empty
  */
 public function send(\Zend\Mail\Mail $mail)
 {
     $this->_isMultipart = false;
     $this->_mail = $mail;
     $this->_parts = $mail->getParts();
     $mime = $mail->getMime();
     // Build body content
     $this->_buildBody();
     // Determine number of parts and boundary
     $count = count($this->_parts);
     $boundary = null;
     if ($count < 1) {
         throw new Exception('Empty mail cannot be sent');
     }
     if ($count > 1) {
         // Multipart message; create new MIME object and boundary
         $mime = new Mime\Mime($this->_mail->getMimeBoundary());
         $boundary = $mime->boundary();
     } elseif ($this->_isMultipart) {
         // multipart/alternative -- grab boundary
         $boundary = $this->_parts[0]->boundary;
     }
     // Determine recipients, and prepare headers
     $this->recipients = implode(',', $mail->getRecipients());
     $this->_prepareHeaders($this->_getHeaders($boundary));
     // Create message body
     // This is done so that the same \Zend\Mail\Mail object can be used in
     // multiple transports
     $message = new Mime\Message();
     $message->setParts($this->_parts);
     $message->setMime($mime);
     $this->body = $message->generateMessage($this->EOL);
     // Send to transport!
     $this->_sendMail();
 }

 private static function log($level, $string, $statsLog = false)
 {
     if (php_sapi_name() === 'cli' || defined('STDIN')) {
         // we are being executed from the CLI, nowhere to log
         return;
     }
     if (self::$loggingHandler === null) {
         // Initialize logging
         self::createLoggingHandler();
         if (!empty(self::$earlyLog)) {
             error_log('----------------------------------------------------------------------');
             // output messages which were logged before we properly initialized logging
             foreach (self::$earlyLog as $msg) {
                 self::log($msg['level'], $msg['string'], $msg['statsLog']);
             }
         }
     } elseif (self::$loggingHandler === false) {
         // some error occurred while initializing logging
         if (empty(self::$earlyLog)) {
             // this is the first message
             error_log('--- Log message(s) while initializing logging ------------------------');
         }
         error_log($string);
         self::defer($level, $string, $statsLog);
         return;
     }
     if (self::$captureLog) {
         $ts = microtime(true);
         $msecs = (int) (($ts - (int) $ts) * 1000);
         $ts = GMdate('H:i:s', $ts) . sprintf('.%03d', $msecs) . 'Z';
         self::$capturedLog[] = $ts . ' ' . $string;
     }
     if (self::$logLevel >= $level || $statsLog) {
         if (is_array($string)) {
             $string = implode(",", $string);
         }
         $formats = array('%trackid', '%msg', '%srcip', '%stat');
         $replacements = array(self::$trackid, $string, $_SERVER['REMOTE_ADDR']);
         $stat = '';
         if ($statsLog) {
             $stat = 'STAT ';
         }
         array_push($replacements, $stat);
         if (self::$trackid === self::NO_TRACKID && !self::$shuttingDown) {
             // we have a log without track ID and we are not still shutting down, so defer logging
             self::defer($level, $string, $statsLog);
             return;
         } elseif (self::$trackid === self::NO_TRACKID) {
             // shutting down without a track ID, prettify it
             array_shift($replacements);
             array_unshift($replacements, 'N/A');
         }
         // we either have a track ID or we are shutting down, so just log the message
         $string = str_replace($formats, $replacements, self::$format);
         self::$loggingHandler->log($level, $string);
     }
 }

 /**
  * Checks if current position is valid.
  *
  * @return bool Returns true on success, false otherwise
  */
 public function valid()
 {
     if (is_null($this->current)) {
         return !empty($this->branch);
     }
     if ($this->current instanceof RecursiveLeafInterface) {
         return $this->current->valid();
     }
     return false;
 }

 /**
  * Show the template to the user.
  */
 public function show()
 {
     if ($this->twig !== false) {
         $this->twigDefaultContext();
         echo $this->twig->render($this->twig_template, $this->data);
     } else {
         $filename = $this->findTemplatePath($this->template);
         require $filename;
     }
 }

 /**
  * Purges the cache store, and loader if there is one.
  *
  * @return bool True on success, false otherwise
  */
 public function purge()
 {
     // 1. Purge the persist cache.
     $this->persistcache = array();
     // 2. Purge the store.
     $this->store->purge();
     // 3. Optionally pruge any stacked loaders.
     if ($this->loader) {
         $this->loader->purge();
     }
     return true;
 }

 /**
  * Purges the cache store, and loader if there is one.
  *
  * @return bool True on success, false otherwise
  */
 public function purge()
 {
     // 1. Purge the static acceleration array.
     $this->static_acceleration_purge();
     // 2. Purge the store.
     $this->store->purge();
     // 3. Optionally pruge any stacked loaders.
     if ($this->loader) {
         $this->loader->purge();
     }
     return true;
 }

 /**
  * Send a mail using this transport
  *
  * @param  OpenPGP_Zend_Mail $mail
  * @access public
  * @return void
  * @throws Zend_Mail_Transport_Exception if mail is empty
  */
 public function send(OpenPGP_Zend_Mail $mail)
 {
     $this->_isMultipart = false;
     $this->_mail = $mail;
     $this->_parts = $mail->getParts();
     $mime = $mail->getMime();
     // Build body content
     $this->_buildBody();
     // Determine number of parts and boundary
     $count = count($this->_parts);
     $boundary = null;
     if ($count < 1) {
         throw new Zend_Mail_Transport_Exception('Empty mail cannot be sent');
     }
     if ($count > 1) {
         // Multipart message; create new MIME object and boundary
         $mime = new Zend_Mime($this->_mail->getMimeBoundary());
         $boundary = $mime->boundary();
     } elseif ($this->_isMultipart) {
         // multipart/alternative -- grab boundary
         $boundary = $this->_parts[0]->boundary;
     }
     // Determine recipients, and prepare headers
     $this->recipients = implode(',', $mail->getRecipients());
     $this->_prepareHeaders($this->_getHeaders($boundary));
     // Create message body
     // This is done so that the same OpenPGP_Zend_Mail object can be used in
     // multiple transports
     $message = new Zend_Mime_Message();
     $message->setParts($this->_parts);
     $message->setMime($mime);
     $this->body = $message->generateMessage($this->EOL);
     ////////////////////////////////////////////////////////
     //                                                    //
     // ALPHAFIELDS 2012-11-03: ADDED PGP/MIME ENCRYPTION  //
     // USING lib/openpgp/opepgplib.php                    //
     //                                                    //
     ////////////////////////////////////////////////////////
     // get from globals (set in tiki-setup.php)
     global $openpgplib;
     $pgpmime_msg = $openpgplib->prepareEncryptWithZendMail($this->header, $this->body, $mail->getRecipients());
     $this->header = $pgpmime_msg[0];
     // set pgp/mime headers from result array
     $this->body = $pgpmime_msg[1];
     // set pgp/mime encrypted message body from result array
     ////////////////////////////////////////////////////////
     //                                                    //
     // ALPHAFIELDS 2012-11-03: ..END PGP/MIME ENCRYPTION  //
     //                                                    //
     ////////////////////////////////////////////////////////
     // Send to transport!
     $this->_sendMail();
 }

 /**
  * Handle exception (uncatched).
  *
  * @param \Throwable $exception
  */
 public function handleException($exception)
 {
     if (!$exception instanceof \Exception) {
         $exception = new \Exception("Can't handle exception thrown!");
     }
     // Log
     \Logger::error((string) $exception);
     // Whoops
     if ($this->whoops !== false) {
         $this->whoops->handleException($exception);
     }
 }

 /**
  * @param string $keyword
  * @param int $keywordAdditionalWeight
  */
 public function run($keyword, $keywordAdditionalWeight = 0)
 {
     if ($this->_databaseConnection) {
         $prefix = config('coaster::blog.prefix');
         $blogPosts = $this->_databaseConnection->query("\n                SELECT wp.*, weights.search_weight FROM wp_posts wp RIGHT JOIN\n                    (\n                        SELECT ID, sum(search_weight) as search_weight\n                        FROM (\n                            SELECT ID, 4 AS search_weight FROM {$prefix}posts WHERE post_type = 'post' AND post_status = 'publish' AND post_title like '%" . $keyword . "%'\n                            UNION\n                            SELECT ID, 2 AS search_weight FROM {$prefix}posts WHERE post_type = 'post' AND post_status = 'publish' AND post_content like '%" . $keyword . "%'\n                        ) results\n                        GROUP BY ID\n                    ) weights\n                ON weights.ID = wp.ID;\n                ");
         if ($blogPosts) {
             $defaultSeparator = new Path(false);
             foreach ($blogPosts as $blogPost) {
                 $postData = new \stdClass();
                 $postData->id = 'WP' . $blogPost['ID'];
                 unset($blogPost['ID']);
                 foreach ($blogPost as $field => $value) {
                     $postData->{$field} = $value;
                 }
                 $postData->content = $blogPost['post_content'];
                 $postData->fullName = ucwords(str_replace('/', ' ', config('coaster::blog.url'))) . $defaultSeparator->separator . $blogPost['post_title'];
                 $postData->fullUrl = config('coaster::blog.url') . $blogPost['post_name'];
                 self::_addWeight($postData, $blogPost['search_weight'] + $keywordAdditionalWeight);
             }
         }
     }
 }

 /**
  * Checks if login is required on this site. is_required for public access
  *
  * @since  0.1.0
  *
  * @return boolean Enabled or disabled
  */
 protected function get_required_option_bool()
 {
     $setting = $this->get_option('require');
     if ('enabled' === $setting) {
         return true;
     }
     if ('disabled' === $setting) {
         return false;
     }
     if ($this->network_admin) {
         return (bool) $this->network_admin->get_option('enable_network_wide');
     }
     return false;
 }