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Homephp教程php手册php正则链接-取得内容所有链接

php正则链接-取得内容所有链接

Jun 13, 2016 am 11:17 AM
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下面提供二款关于php正则链接方法,他们可以-取得内容所有链接并且保存到一个数组,当然也可以把链接全部替换哦。  

下面提供二款关于php教程正则链接方法,他们可以-取得内容所有链接并且保存到一个数组,当然也可以把链接全部替换哦。

方法一

function get_all_url($code){
        preg_match_all('/"' ]+)["|']?s*[^>]*>([^>]+)/i',$code,$arr);
        return array('name'=>$arr[2],'url'=>$arr[1]);
}+href=["|']?([^>


方法二

$site=substr($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($regarr);$i++){>

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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