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php正则表达式取得内容所有链接

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PHP中文网Original
2016-05-23 17:09:201468browse

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function get_all_url($code){  

        preg_match_all('/"' ]+)["|']?s*[^>]*>([^>]+)/i',$code,$arr);  

        return array('name'=>$arr[2],'url'=>$arr[1]);  

}

                       

           

2. [代码]方法二    

/**
 * date 2015-07-24
 * edit http://www.aichengxu.com/view/62054
 **/

$site=substr($url,0,strpos($url,"/",8));//站点 

$base=substr($url,0,strrpos($url,"/")+1);//文件所在目录 

$fp = fopen($url, "r" );//打开url 

 

while(!feof($fp))$contents.=fread($fp,1024);// 

$pattern="|href=['"]?([^ '"]+)['" ]|u"; 

 

preg_match_all($pattern,$contents, $regarr, preg_set_order);//匹配所有href= 

for($i=0;$i<count($regarr);$i++){//遍历所有匹配 

if(!eregi("://",$regarr[$i][1]))//是否是相对路径,即是否还有:// 

if(substr($regarr[$i][1],0,1)=="/")//是否是站点的根目录 

   echo "link".($i+1).":".$site.$regarr[$i][1]."
";//根目录 

else 

   echo "link".($i+1).":".$base.$regarr[$i][1]."
";//当前目录 

else 

echo "link".($i+1).":".$regarr[$i][1]."
";//相对路径 

}

fclose($fp);

           

       

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