我知道使用通用对象[stdClass（）]并将其转换为数组可以解决此问题，但是我认为Compositor是一个很好的答案。但是我觉得它可以使用一些功能增强功能，并且可能对其他人有用。
特征：
- 指定参考或克隆
- 指定第一个或最后一个条目优先
- 与array_merge语法相似的多个（两个以上）对象合并
- 方法链接：$ obj-> f1（）-> f2（）-> f3（）...
- 动态复合材料：$ obj-> merge（...）/ *在这里工作* / $ obj-> merge（...）
码：
class Compositor {
protected $composite = array();
protected $use_reference;
protected $first_precedence;
/**
* __construct, Constructor
*
* Used to set options.
*
* @param bool $use_reference whether to use a reference (TRUE) or to copy the object (FALSE) [default]
* @param bool $first_precedence whether the first entry takes precedence (TRUE) or last entry takes precedence (FALSE) [default]
*/
public function __construct($use_reference = FALSE, $first_precedence = FALSE) {
// Use a reference
$this->use_reference = $use_reference === TRUE ? TRUE : FALSE;
$this->first_precedence = $first_precedence === TRUE ? TRUE : FALSE;
}
/**
* Merge, used to merge multiple objects stored in an array
*
* This is used to *start* the merge or to merge an array of objects.
* It is not needed to start the merge, but visually is nice.
*
* @param object[]|object $objects array of objects to merge or a single object
* @return object the instance to enable linking
*/
public function & merge() {
$objects = func_get_args();
// Each object
foreach($objects as &$object) $this->with($object);
// Garbage collection
unset($object);
// Return $this instance
return $this;
}
/**
* With, used to merge a singluar object
*
* Used to add an object to the composition
*
* @param object $object an object to merge
* @return object the instance to enable linking
*/
public function & with(&$object) {
// An object
if(is_object($object)) {
// Reference
if($this->use_reference) {
if($this->first_precedence) array_push($this->composite, $object);
else array_unshift($this->composite, $object);
}
// Clone
else {
if($this->first_precedence) array_push($this->composite, clone $object);
else array_unshift($this->composite, clone $object);
}
}
// Return $this instance
return $this;
}
/**
* __get, retrieves the psudo merged object
*
* @param string $name name of the variable in the object
* @return mixed returns a reference to the requested variable
*
*/
public function & __get($name) {
$return = NULL;
foreach($this->composite as &$object) {
if(isset($object->$name)) {
$return =& $object->$name;
break;
}
}
// Garbage collection
unset($object);
return $return;
}
}
用法：
$obj = new Compositor(use_reference, first_precedence);
$obj->merge([object $object [, object $object [, object $...]]]);
$obj->with([object $object]);
例：
$obj1 = new stdClass();
$obj1->a = 'obj1:a';
$obj1->b = 'obj1:b';
$obj1->c = 'obj1:c';
$obj2 = new stdClass();
$obj2->a = 'obj2:a';
$obj2->b = 'obj2:b';
$obj2->d = 'obj2:d';
$obj3 = new Compositor();
$obj3->merge($obj1, $obj2);
$obj1->c = '#obj1:c';
var_dump($obj3->a, $obj3->b, $obj3->c, $obj3->d);
// obj2:a, obj2:b, obj1:c, obj2:d
$obj1->c;
$obj3 = new Compositor(TRUE);
$obj3->merge($obj1)->with($obj2);
$obj1->c = '#obj1:c';
var_dump($obj3->a, $obj3->b, $obj3->c, $obj3->d);
// obj1:a, obj1:b, obj1:c, obj2:d
$obj1->c = 'obj1:c';
$obj3 = new Compositor(FALSE, TRUE);
$obj3->with($obj1)->with($obj2);
$obj1->c = '#obj1:c';
var_dump($obj3->a, $obj3->b, $obj3->c, $obj3->d);
// obj1:a, obj1:b, #obj1:c, obj2:d
$obj1->c = 'obj1:c';