wordpress 给外部链接加上跳转 代码篇

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//给外部链接加上跳转
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function git_go_url($content){
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    preg_match_all('/<a(.*?)href="(.*?)"(.*?)>/',$content,$matches);
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    if($matches && !is_page('about')){
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        foreach($matches[2] as $val){
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            if(strpos($val,'://')!==false && strpos($val,home_url())===false && !preg_match('/\.(jpg|jepg|png|ico|bmp|gif|tiff)/i',$val)){
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                if(git_get_option('git_pagehtml_b')) {
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                    $content=str_replace("href=\"$val\"", "href=\"".home_url()."/go.html/?url=$val\" ",$content);
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                }else{
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                    $content=str_replace("href=\"$val\"", "href=\"".home_url()."/go/?url=$val\" ",$content);
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                }
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            }
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        }
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    }
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    return $content;
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}