Question

这样最后一个类在类

中都有所有成员变量/方法

有简单的方法吗？

Answer 1

您应该将这两个类封装在一个包含的类中，并提供相关的接口（例如私有变量的setter / getters

class YourFirstClass {
   public $variable;
   private $_variable2;
   public function setVariable2($a) {
       $this->_variable2 = $a;
   }
}

class YourSecondClass {
   public $variable;
   private $_variable2;
   public function setVariable2($a) {
       $this->_variable2 = $a;
   }
}

class ContaingClass {
   private $_first;
   private $_second;
   public function __construct(YourFirstClass $first, YourSecondClass $second) {
       $this->_first = $first;
       $this->_second = $second;
   }
   public function doSomething($aa) {
       $this->_first->setVariable2($aa);
   }
}

研究（谷歌）：“继承的构成”

脚注：抱歉非创意变量名称..

Answer 2

您是要求在运行时或编程时执行此操作吗？我将假设运行时，在这种情况下使用类inheritance有什么问题？
创建一个继承自要合并的类的新类。

Answer 3

# Merge only properties that are shared between the two classes into this object.
public function conservativeMerge($objectToMerge)
{
    # Makes sure the argument is an object.
    if(!is_object($objectToMerge))
        return FALSE;

    # Used $this to make sure that only known properties in this class are shared.
    # Note: You can only iterate over an object as of 5.3.0 or greater.
    foreach ($this as $property => $value)
    {
        # Makes sure that the mering object has this property.
        if (isset($objectToMerge->$property))
        {
            $objectToMerge->$property = $value;
        }
    }
}


# Merge all $objectToMerge's properties to this object.
public function liberalMerge($objectToMerge)
{
    # Makes sure the argument is an object.
    if(!is_object($objectToMerge))
        return FALSE;

    # Note: You can only iterate over an object as of 5.3.0 or greater.
    foreach ($objectToMerge as $property => $value)
    {
        $objectToMerge->$property = $value;
    }
}

您应该将第一种方法视为array_combine()对象的对应方式。然后考虑第二种方法，就好像它是array_merge()对象的对应位置。

如何在PHP中合并两个类？

3 个答案: