可以在PHP 5.3中使用new作为方法名称吗? [英] Is it possible to use new as a method name in PHP 5.3?

问题描述

我嫉妒Ruby使用"new"作为方法.是否可以通过使用命名空间在PHP 5.3中实现这一目标?

I'm jealous of Ruby with their use of "new" as a method. Is it possible to achieve this in PHP 5.3 with the use of namespaces?

class Foo
{
     public function new()
     {
         echo 'Hello';
     }
}

推荐答案

否.就像在其他地方已经指出的那样，new是保留关键字.尝试将其用作方法名称将导致解析错误:语法错误，意外的T_NEW，期望的是T_STRING".命名空间将无济于事，因为new关键字适用于任何命名空间.解决此问题的唯一方法是借助虚拟方法，例如

No. Like already pointed out elsewhere, new is a reserved keyword. Trying to use it as a method name will result in a Parse error: "syntax error, unexpected T_NEW, expecting T_STRING". Namespaces will not help, because the new keyword applies to any namespace. The only way around this would be by means of a virtual method, e.g.

/**
 * @method String new new($args) returns $args
 */
class Foo
{
     protected function _new($args)
     {
         return $args;
     }
     public function __call($method, $args)
     {
         if($method === 'new') {
             return call_user_func_array(array($this, '_new'), $args);
         } else {
             throw new LogicException('Unknown method');
         }
     }
}
$foo = new Foo;
echo $foo->new('hello'); // return hello
echo $foo->boo();        // throws Exception

但是我不鼓励这样做.所有魔术方法都比直接调用方法慢，并且如果简单规则不存在方法名称new，就可以了.使用同义词.

But I would discourage this. All magic methods are slower than direct invocation of methods and if the simple rule is there may be no method name new, then just be it. Use a synonym.

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