php提取字符串中网站url地址的方法_php技巧

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Release: 2016-05-16 20:29:23
Original
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本文实例讲述了php提取字符串中网站url地址的方法。分享给大家供大家参考。具体分析如下:

今天写一个问答系统上线之后发现有很多人发链接了,由于业务部门要我们过滤掉网站地址了,下面我给大家分享一个提取字符串url地址函数,代码如下:

复制代码 代码如下:
$postInfo['answer2'] ='可以的,商业贷款可摊还36%,公积金贷款可摊还16%|||可以先把账户里的余额提取出来用作首付,然后每个月贷款商业贷款可摊还36%,公积金贷款可摊还16%|||可以的,现在甲类公积金是摊还比例http://www.jb51.net 是工资基数的34%|||啊啊啊啊啊啊啊啊是的|||可以摊还,甲类34%
';
 
preg_match_all("/http:[\/]{2}[a-z]+[.]{1}[a-z\d\-]+[.]{1}[a-z\d]*[\/]*[A-Za-z\d]*[\/]*[A-Za-z\d]*/",$postInfo['answer2'],$array2);
 
print_r($array2);
 
if(!emptyempty($array2[0]))
{
 foreach ($array2[0] as $k=>$v){
  $postInfo['answer2'] = str_replace($array2[0][$k],'',$postInfo['answer2'] );
 }
}

 
运行结果为:
复制代码 代码如下:
(
    [0] => Array
        (
            [0] => http://www.jb51.net
        )
)

希望本文所述对大家的PHP程序设计有所帮助。

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