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Ich sehe das immer häufiger, bin mir aber nicht sicher, was getan werden muss, um diese Warnung zu stoppen:
VERALTET: Dynamische Eigenschaften erstellen... VERALTET
Das ist meine Klasse:
class database { public $username = "root"; public $password = "password"; public $port = 3306; public function __construct($params = array()) { foreach ($params as $key => $value) { $this->{$key} = $value; } } }
So instanziiere ich es.
$db = new database(array( 'database' => 'db_name', 'server' => 'database.internal', ));
Das gibt mir zwei Botschaften:
VERALTET: Dynamische Eigenschaftendatenbank erstellen::$database Veraltet
VERALTET: Dynamische Eigenschaftendatenbank erstellen::$server Veraltet
P粉2991740942023-10-21 10:14:38
该警告告诉您您尝试设置的属性未在类顶部列出。
当您运行此命令时:
class database { public $username = "root"; public $password = "pasword"; public $port = 3306; public function __construct($params = array()) { foreach ($params as $key => $value) { $this->{$key} = $value; } } } $db = new database(array( 'database' => 'db_name', 'server' => 'database.internal', ));
大致相当于这样:
class database { public $username = "root"; public $password = "pasword"; public $port = 3306; } $db = new database; $db->database = 'db_name'; $db->server = 'database.internal';
警告是类定义中没有行表明 $db->database
或 $db->server
存在。
目前,它们将动态创建为非类型化公共属性,但将来,您需要显式声明它们:
class database { public $database; public $server; public $username = "root"; public $password = "pasword"; public $port = 3306; public function __construct($params = array()) { foreach ($params as $key => $value) { $this->{$key} = $value; } } } $db = new database(array( 'database' => 'db_name', 'server' => 'database.internal', ));
在一些罕见的情况下,你实际上想说“这个类的属性是我决定在运行时添加的任何属性”;在这种情况下,您可以使用 #[AllowDynamicProperties]
属性,如下所示:
#[AllowDynamicProperties] class objectWithWhateverPropertiesIWant { public function __construct($params = array()) { foreach ($params as $key => $value) { $this->{$key} = $value; } } }
P粉0989790482023-10-21 10:03:08
因此警告来自添加动态类属性的构造函数。如果您不必动态且真实地传递这些字段,那么您似乎确实将简单的事情变得过于复杂,那么请像这样尝试。
class database { public $username = "root"; public $password = "pasword"; public $port = 3306; public $database = 'db_name'; public $server = 'database.internal'; } $db = new database();
您需要动态参数有什么原因吗?您也可以这样做:
class database { public $username = "root"; public $password = "pasword"; public $port = 3306; public $database; public $server; public function __construct($params = array()) { foreach ($params as $key => $value) { $this->{$key} = $value; } } }
如果您提前添加参数,它们就不是动态的,您只是为已经存在的内容分配一个值。
现在应该可以正常工作,不会出现任何警告。
$db = new database(array( 'database' => 'db_name', 'server' => 'database.internal', ));