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安装wordpress后,提示的源码异常

WBOY
Release: 2016-06-13 12:11:09
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安装wordpress后,提示的源码错误
刚刚把wordpress4.01上传到主机,打开域名,出现这么一句话:
Fatal error: Call to undefined function request_filesystem_credentials() in /data/home/htdocs/wp-admin/includes/class-wp-upgrader-skins.php on line 47
找到源码如下

public function request_filesystem_credentials($error = false) {<br />		$url = $this->options['url'];<br />		$context = $this->options['context'];<br />		if ( !empty($this->options['nonce']) )<br />			$url = wp_nonce_url($url, $this->options['nonce']);<br />		return request_filesystem_credentials($url, '', $error, $context); //Possible to bring inline, Leaving as is for now.<br />	}<br />
Copy after login

提示的就是return这一行的request_filesystem_credentials($url, '', $error, $context)函数未定义,在文件里也没有找到这个函数,不过和它重名参数不同的函数有几个,百度了一下,不是说php不支持重载吗?不懂php,不知道怎么处理,哪位大神懂吗?
------解决思路----------------------
看看 wp-admin/includes/file.php 这个文件在不在

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