PHP：调用没有类名的静态方法

问题描述：

I have simllar question like here: static-method-invocation, but in PHP. Simply, I want have class like this:

static class ClassName{
   static public function methodName(){
         //blah blah blah
   }
}

and I want to call member method without name od class like this:

require_once(ClassName.php);

methodName();

Is it possible in PHP? Thanks for your answers!

我有类似的问题： static-method-invocation ，但在PHP中。简单地说，我想要这样的类： p>

  static class ClassName {
 static public function methodName（）{
 // blah blah blah 
  } 
} 
  code>  pre> 
  blockquote> 
 
 我想调用没有名称od类的成员方法，如下所示： p> 
 
  
 
  require_once（ClassName.php）; 
 
 
methodName（）; 
  code>  pre> 
  blockquote> 
 
 是否可能 用PHP？ 谢谢你的回答！ p> 
  div>

答

You can not do what you're looking for. The example call you give:

methodName();

Is calling a global function. Even static class functions are global as well, they always need the class-name to be called:

ClassName::methodName();

This calls the global static class function you've created in the include file.

I can only guess what you'd like to achieve, maybe you can benefit from the feature that includes can return values:

static class ClassName{
   static public function methodName(){
         //blah blah blah
   }
}
return 'ClassName';

Including:

$className = require_once(ClassName.php);
$className::methodName();

However this won't work with reguire_once when the file has been loaded earlier.

You can write a wrapper function to require_once files, store their return value into a global context array that keeps these values based on the file-name of the include.

Keep in mind that the java language differs from PHP. The equivalent to the java static function would be the global function in PHP:

function methodName(){
    //blah blah blah
}

Including:

require_once(ClassName.php);
methodName();

That's the PHP equivalent.

答

only way

$ClassName = 'MyClass';
require_once($ClassName.'.php');

$ClassName::methodName();

PHP：调用没有类名的静态方法

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