leadscloud

<?php
/*
Plugin Name: User only
Plugin URI: http://fairyfish.net/m/post-for-user-only/
Description:通过给 user_only 这个自定义字段设置为 true 来设置当前文章仅限于会员浏览。
Author: Denis
Version: 1.0
Author URI: http://wpjam.com
*/
add_filter('the_content', 'post_user_only');
function post_user_only($text){
    global $post;

    $user_only = get_post_meta($post->ID, 'user_only', true);
    if($user_only){
        global $user_ID;
        if(!$user_ID){
            $redirect = get_permalink($post->ID);
            $text = '该内容仅限于会员浏览，请<a href="'.wp_login_url($redirect).'">登录</a>！';
        }
    }
    return $text;
}
?>

foreach ($allowedSites as $site) {
    if (strpos (strtolower ($url_info['host']), $site) !== false) {
        $isAllowedSite = true;
}
foreach ($allowedSites as $site) {
    if (strpos (strtolower ($url_info['host'] . ‘/’), $site) !== false) {
        $isAllowedSite = true;
}

/**
 *
 * @param [HTML_REMOVED] $property
 * @param [HTML_REMOVED] $default
 * @return [HTML_REMOVED]
 */
function get_request ($property, $default = 0) {
    if (isset ($_GET[$property])) {
        return $_GET[$property];
    } else {
        return $default;
    }
}

**
 *
 * @global array $allowedSites
 * @param string $src
 * @return string
 */
function check_external ($src) {
        global $allowedSites;
        // work out file details
        $fileDetails = pathinfo ($src);
        $filename = ‘external_’ . md5 ($src);  //注意这个地方是文件生成后的文件名
        $local_filepath = DIRECTORY_CACHE . ‘/’ . $filename . ‘.’ . strtolower ($fileDetails['extension']);
        // only do this stuff the file doesn’t already exist
        if (!file_exists ($local_filepath)) {
                if (strpos (strtolower ($src), ‘http://’) !== false || strpos (strtolower ($src), ‘https://’) !== false) {
                        if (!validate_url ($src)) {
                                display_error (‘invalid url’);
                        }
                        $url_info = parse_url ($src);
                        // convert youtube video urls
                        // need to tidy up the code
                        if ($url_info['host'] == ‘www.youtube.com’ || $url_info['host'] == ‘youtube.com’) {
                                parse_str ($url_info['query']);
                                if (isset ($v)) {
                                        $src = ‘http://img.youtube.com/vi/’ . $v . ‘/0.jpg’;
                                        $url_info['host'] = ‘img.youtube.com’;
                                }
                        }
                        // check allowed sites (if required)
                        if (ALLOW_EXTERNAL) {
                                $isAllowedSite = true;
                        } else {
                                $isAllowedSite = false;  //注意这个地方是重点
                                foreach ($allowedSites as $site) {
                                        if (strpos (strtolower ($url_info['host']), $site) !== false) {
                                                $isAllowedSite = true;
                                        }
                                }
                        }
                        // if allowed  //判断正确了就直接写文件了。
                        if ($isAllowedSite) {
                                if (function_exists (‘curl_init’)) {
                                        global $fh;
                                        $fh = fopen ($local_filepath, ‘w’);
                                        $ch = curl_init ($src);
                                        curl_setopt ($ch, CURLOPT_TIMEOUT, CURL_TIMEOUT);
                                        curl_setopt ($ch, CURLOPT_USERAGENT, ‘Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0′);
                                        curl_setopt ($ch, CURLOPT_URL, $src);
                                        curl_setopt ($ch, CURLOPT_RETURNTRANSFER, TRUE);
                                        curl_setopt ($ch, CURLOPT_HEADER, 0);
                                        curl_setopt ($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
                                        curl_setopt ($ch, CURLOPT_FILE, $fh);
                                        curl_setopt ($ch, CURLOPT_WRITEFUNCTION, ‘curl_write’);
                                        // error so die
                                        if (curl_exec ($ch) === FALSE) {
                                                unlink ($local_filepath);
                                                touch ($local_filepath);
                                                display_error (‘error reading file ‘ . $src . ‘ from remote host: ‘ . curl_error ($ch));
                                        }
                                        curl_close ($ch);
                                        fclose ($fh);
                } else {
                                        if (!$img = file_get_contents ($src)) {
                                                display_error (‘remote file for ‘ . $src . ‘ can not be accessed. It is likely that the file’);
                                        }
                                        if (file_put_contents ($local_filepath, $img) == FALSE) {
                                                display_error (‘error writing temporary file’);
                                        }
                                }
                                if (!file_exists ($local_filepath)) {
                                        display_error (‘local file for ‘ . $src . ‘ can not be created’);
                                }
                                $src = $local_filepath;
                        } else {
                                display_error (‘remote host “‘ . $url_info['host'] . ‘” not allowed’);
                        }
                }
    } else {
                $src = $local_filepath;
        }
    return $src;
}