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<?php |
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class DatabaseConnect extends mysqli |
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{ |
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// The database connection |
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public function __construct() |
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{ |
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$config = parse_ini_file('config/config.ini.php'); |
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parent::__construct($config['host'], $config['username'], $config['password'], $config['dbname']); |
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} |
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} |
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$db = new DatabaseConnect(); |
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if($db->connect_errno == 1203) // 1203 == ER_TOO_MANY_USER_CONNECTIONS (mysqld_error.h) |
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{ |
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error_log('ER_TOO_MANY_USER_CONNECTIONS'); |
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sleep(1); |
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header('location: '.$_SERVER['PHP_SELF']); |
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} |
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if ($db->connect_errno) |
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{ |
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error_log('Sorry, die Verbindung zu unserem |
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Server ist hops gegangen. Wegen '. $db -> connect_error); |
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echo 'Sorry, die Verbindung zu unserem |
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Server ist hops gegangen. Wegen '. $db -> connect_error; |
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} |
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/* Uncomment if you start first time |
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$query = "CREATE TABLE IF NOT EXISTS `accounts` ( |
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`id` int(11) unsigned NOT NULL auto_increment, |
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`access_token` varchar(55) NOT NULL default '', |
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`refresh_token` varchar(55) NOT NULL default '', |
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`token_type` varchar(55) NOT NULL default 'bearer', |
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`expires_in` INT NOT NULL, |
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`expiration_date` INT NOT NULL, |
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`device_uid` varchar(255) NOT NULL default '', |
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`client_id` varchar(255) NOT NULL default '81e8a76e-1e02-4d17-9ba0-8a7020261b26', |
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`distinct_id` varchar(255) NOT NULL default '', |
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`city` varchar(100) default '', |
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`country` varchar(10) default 'DE', |
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`loc_accuracy` varchar(50) default '0.0', |
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`lat` varchar(255) default '', |
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`lng` varchar(255) default '', |
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`name` varchar(100) default '', |
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`X-Client-Type` varchar(50) NOT NULL default 'android_4.24.2', |
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`User-Agent` varchar(150) NOT NULL default 'Jodel/4.4.9 Dalvik/2.1.0 (Linux; U; Android 5.1.1; )', |
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`X-Api-Version` varchar(10) NOT NULL default '0.2', |
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PRIMARY KEY (`id`) |
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) DEFAULT CHARSET=utf8"; |
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$query2 = "CREATE TABLE IF NOT EXISTS `votes` ( |
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`id` int(11) unsigned NOT NULL auto_increment, |
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`device_uid` varchar(255) NOT NULL, |
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`postId` varchar(255) NOT NULL, |
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`type` varchar(255) NOT NULL, |
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PRIMARY KEY (`id`) |
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) DEFAULT CHARSET=utf8"; |
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$query3 = "CREATE TABLE IF NOT EXISTS `users` ( |
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`id` int(11) unsigned NOT NULL auto_increment, |
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`device_uid` varchar(255) NOT NULL, |
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`rights` varchar(255) NOT NULL, |
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`user_token` varchar(255) NOT NULL, |
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`remaining_votes` INT NOT NULL, |
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PRIMARY KEY (`id`) |
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) DEFAULT CHARSET=utf8"; |
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$queryCitys = "CREATE TABLE IF NOT EXISTS `citys` ( |
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`id` int(11) unsigned NOT NULL auto_increment, |
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`name` varchar(255) NOT NULL, |
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`lat` varchar(255) NOT NULL, |
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`lng` varchar(255) NOT NULL, |
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`country` INT NOT NULL, |
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PRIMARY KEY (`id`) |
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) DEFAULT CHARSET=utf8"; |
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if(!$db->query($query) || !$db->query($query2) || !$db->query($query3) || !$db->query($queryCitys)) |
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{ |
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throw new Exception($db->error($mysqli)); |
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} |
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*/ |
Let’s take a look at an example:
In the above example, the authenticate() method works fine as long as you just pass instances of MyUser. However, if you now also want to pass a different sub-classes of User which does not have a getDisplayName() method, the code will break.
Available Fixes
Change the type-hint for the parameter:
Add an additional type-check:
Add the method to the parent class: