是否可以使用类的静态私有方法作为回调？

问题描述：

I saw code that contained the following line:

preg_replace_callback($regex, 'TextileParser::replaceAnchor', $text);

where TextileParser::replaceAnchor() is a private static method.

我看到包含以下行的代码： p>

  preg_replace_callback  （$ regex，'TextileParser :: replaceAnchor'，$ text）; 
  code>  pre> 
 
 其中 TextileParser :: replaceAnchor（） code>是私有静态 方法。   p> 
  div>

答

Yes, it is possible.

Just test it yourself:

<?php

class TestCallBack { private static function found_number($num) { return "-".$num[0]."-"; } public function find($Str) { return preg_replace_callback('/[0-9]/', 'TestCallBack::found_number', $Str); } } // Exemple $Tester = new TestCallBack; $Result = $Tester->find("54321"); var_dump($Result);

答

on php's website, there's this example:

http://www.php.net/manual/en/function.preg-replace-callback.php#96899

I'd assume if it's on php.net, then it's good to go.

是否可以使用类的静态私有方法作为回调？

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