为什么不能在另一个对象中加载一个对象? [英] why cannot load an object inside another?
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问题描述
我只是不明白为什么我不能像这样调用一个对象.
I just don't understand why i can't call an object like this.
<?php
$obj = (object) array (
"happy" => " :) ",
"sad" => " :( "
);
class MyClass
{
function __construct () {}
function something ()
{
echo "Hello World\n";
echo $obj->sad;
}
}
$class = new MyClass();
echo $obj->happy;
$class->something();
输出看起来像
:) Hello World
这不是我所期望的.即
:) Hello World :(
我怎样才能做到这一点??
how can I make this work??
这就是我将要实现的这个例子.将对象从全局作用域传递到模型
This is in what I will implement this example. passing objects from the global scope to a model
推荐答案
<?php
$obj = (object) array (
"happy" => " :) ",
"sad" => " :( "
);
class MyClass
{
function __construct (){
}
function something ()
{
global $obj;
echo "Hello World\n";
echo $obj->sad;
}
}
$class = new MyClass();
echo $obj->happy;
$class->something();
?>
这将是一种方法.obj 不在此范围内,您必须将其设为全局或传递.
That will be a way of doing it. obj is not in scope here, you have to either make it global, or pass it.
将它传递给构造函数并保存实例..as here
Pass it to constructor and save instance..as here
<?php
$obj = (object) array (
"happy" => " :) ",
"sad" => " :( "
);
class MyClass
{ private $obj;
function __construct ($obj) {
$this->obj=$obj;
}
function something ()
{
echo "Hello World\n";
echo $this->obj->sad;
}
}
$class = new MyClass($obj);
echo $obj->happy;
$class->something();
但是您必须从所有函数中以 $this->obj 的形式访问 $obj
But you will have to access $obj as $this->obj from all functions
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