我不是PHP开发人员，所以我想知道在PHP中使用显式getter/setter的优点和缺点是什么，在纯OOP风格中，带有私有字段(我喜欢的方式):
class MyClass {
private $firstField;
private $secondField;
public function getFirstField() {
return $this->firstField;
}
public function setFirstField($x) {
$this->firstField = $x;
}
public function getSecondField() {
return $this->secondField;
}
public function setSecondField($x) {
$this->secondField = $x;
}
}
或者只是公共字段:
class MyClass {
public $firstField;
public $secondField;
}
如果你喜欢使用__call函数，你可以使用这个方法。它适用于
GET => $this->属性()
SET => $this->属性($value)
getProperty() => $this->
SET => $this->setProperty($value)
kalsdas
public function __call($name, $arguments) {
//Getting and setting with $this->property($optional);
if (property_exists(get_class($this), $name)) {
//Always set the value if a parameter is passed
if (count($arguments) == 1) {
/* set */
$this->$name = $arguments[0];
} else if (count($arguments) > 1) {
throw new \Exception("Setter for $name only accepts one parameter.");
}
//Always return the value (Even on the set)
return $this->$name;
}
//If it doesn't chech if its a normal old type setter ot getter
//Getting and setting with $this->getProperty($optional);
//Getting and setting with $this->setProperty($optional);
$prefix = substr($name, 0, 3);
$property = strtolower($name[3]) . substr($name, 4);
switch ($prefix) {
case 'get':
return $this->$property;
break;
case 'set':
//Always set the value if a parameter is passed
if (count($arguments) != 1) {
throw new \Exception("Setter for $name requires exactly one parameter.");
}
$this->$property = $arguments[0];
//Always return the value (Even on the set)
return $this->$name;
default:
throw new \Exception("Property $name doesn't exist.");
break;
}
}
There are many ways to create sourcecode in a netbeans-convention. This is nice. It makes thinks such easyer === FALSE. Just use the traditionel, specially if you are not sure which one of the properties should be encapsuled and which one not. I know, it is a boi.... pla... code, but for debugging-works and many other thinks it is the better, clear way. Dont spend to much time with thousend of arts how to make simple getters and setters. You cannot implement too some design patterns like the demeter-rule and so on, if you use magics. In specific situation you can use magic_calls or for small, fast and clear solutions. Sure you could make solutions for design-patters in this way too, but why to make you live more difficult.
如果你喜欢使用__call函数，你可以使用这个方法。它适用于
GET => $this->属性()
SET => $this->属性($value)
getProperty() => $this->
SET => $this->setProperty($value)
kalsdas
public function __call($name, $arguments) {
//Getting and setting with $this->property($optional);
if (property_exists(get_class($this), $name)) {
//Always set the value if a parameter is passed
if (count($arguments) == 1) {
/* set */
$this->$name = $arguments[0];
} else if (count($arguments) > 1) {
throw new \Exception("Setter for $name only accepts one parameter.");
}
//Always return the value (Even on the set)
return $this->$name;
}
//If it doesn't chech if its a normal old type setter ot getter
//Getting and setting with $this->getProperty($optional);
//Getting and setting with $this->setProperty($optional);
$prefix = substr($name, 0, 3);
$property = strtolower($name[3]) . substr($name, 4);
switch ($prefix) {
case 'get':
return $this->$property;
break;
case 'set':
//Always set the value if a parameter is passed
if (count($arguments) != 1) {
throw new \Exception("Setter for $name requires exactly one parameter.");
}
$this->$property = $arguments[0];
//Always return the value (Even on the set)
return $this->$name;
default:
throw new \Exception("Property $name doesn't exist.");
break;
}
}
