如何在 PHP 中回显自定义对象？
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How to echo a custom object in PHP?
提问by Garet Claborn
Given a particular class with an instance foo, is there any way to have PHP echo foo;in a customized manner?
给定一个具有实例foo的特定类，有没有办法以echo foo;自定义方式拥有 PHP ？
class TheClass {
public $Name;
public $Number;
function MrFunction() { /* bla bla bla */ }
}
$foo = new TheClass();
echo $foo;
As I understand, you cannot overload echoand I realize I could easily have $foo->MrFunction()do the work. However I am wondering if there is a way to code in which
据我了解，您不能超载，echo而且我意识到我可以轻松$foo->MrFunction()完成这项工作。但是我想知道是否有一种方法可以在其中进行编码
echo $fooprints out $foo->Nameand $foo->Number.
echo $foo打印出来$foo->Name和$foo->Number。
We're using PHP Version 5.2.6but upgrading is not an issue.
我们使用的是PHP 5.2.6 版，但升级不是问题。
回答by prodigitalson
class TheClass {
public $Name;
public $Number;
function MrFunction() { /* bla bla bla */ }
public function __toString()
{
return $this->Name . ' '. $this->Number;
}
}
echo $theClassInstance;
回答by Steve Mallory
I think you are looking for print_r($foo), or var_dump($foo).
我认为您正在寻找print_r($foo)， 或var_dump($foo)。
回答by onteria_
Yes, using the __toStringmagic method
是的，使用__toString魔术方法
回答by CVM
What you need is the __toString()magic method. The example in the docs should show what you need.
你需要的是__toString()神奇的方法。文档中的示例应该显示您需要什么。
http://www.php.net/manual/en/language.oop5.magic.php#language.oop5.magic.tostring:
http://www.php.net/manual/en/language.oop5.magic.php#language.oop5.magic.tostring：
