是否可以使用类的静态私有方法作为回调？

Question

I saw code that contained the following line:

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

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

Answer 1

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);