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批量过滤MYSQL数据库内站外链接和图片程序代码
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PHP批量过滤MYSQL数据库内站外链接和图片

Jun 06, 2016 pm 07:43 PM
mysql php picture batch database filter

增加对站点内容外部链接的过滤》。因考虑如果是在前台调用数据时过滤的话,对网页打开速度,服务器能耗都增加许多,所以就采用的是入库时添加。 那么,原来已有的数据怎么办?现在需要对原来的数据也进行此操作,如果是在后台一条条编辑来实现,即使只需要点

增加对站点内容外部链接的过滤》。因考虑如果是在前台调用数据时过滤的话,对网页打开速度,服务器能耗都增加许多,所以就采用的是入库时添加。

那么,原来已有的数据怎么办?现在需要对原来的数据也进行此操作,如果是在后台一条条编辑来实现,即使只需要点一下,工程量也是很大的,那么就需要一个批处理操作。

写一个批处理程序即可,经调试,测试,以下的程序可很好的替换原来数据库里面的外部链接和外部图片

如,站点是http://www.ledaokj.com

一篇文章里有一个链接是 http://www.53sj.net/article-6-1.html

一个图片是 http://www.68idc.cn/help/uploads/allimg/150923/0I201BZ-0.jpg

经过批处理操作后

其代码变成

PHP批量过滤MYSQL数据库内站外链接和图片

 

批量过滤MYSQL数据库内站外链接和图片程序代码

global $config,$db;

$sql = "SELECT `id`,`content` FROM `{$db->prefix}article`";

 

$a_list = $db->query($sql);

 

$domain = $config['url'];

$domain = substr($domain,0,strlen($domain)-1);  //修正当前域名网址

 

foreach($a_list as $a){

$content = content_nofollow($a['content'],$domain);

update_a($a['id'],addslashes($content));

}

exit;

 

function update_a($id,$content){

global $config,$db;

 

$sql = "update `{$db->prefix}article` SET `content`='{$content}' where `id`={$id}";

if($db->execute($sql)){echo $id.'更新成功!
';}

}

 

//外部链接增加nofllow $content 内容 $domain 当前网站域名

function content_nofollow($content,$domain){

 preg_match_all('/href="(.*?)"/',$content,$matches);

 if($matches){

  foreach($matches[1] as $val){

   if( strpos($val,$domain)===false ) $content=str_replace('href="'.$val.'"', 'href="'.$val.'" rel="external nofollow" ',$content);

  }

 }

 preg_match_all('/src="http:(.*?)"/',$content,$matches);

 if($matches){

  foreach($matches[1] as $val){

   if( strpos($val,$domain)===false ) $content=str_replace('src="http:'.$val.'"', 'src="http:'.$val.'" rel="external nofollow" ',$content);

  }

 }

 return $content;

}

 

PHP批量过滤MYSQL数据库内站外链接和图片

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