php截取特定段落如何操作
比如用户通过文本框输入一串字符
第一次输入的内容:$w1= http://you.video.sina.com.cn/b/25323843-1272884840.html;
第二次输入的内容:$w2=http://v.youku.com/v_show/id_xmziznja2nje2.html;
第一次得到的结果:$val=25323843;
第二次得到的结果:$val=xmziznja2nje2;
假定上面两个值是用户自己分别输入的，请问程序怎样自动提取它们我所需要的值？能给个范例么？
求大家帮帮忙
分享到：
------解决方案--------------------
//针对视频链接处理
function url_1($str)
{
$ubb_search = array(/http:\/\/(v
------解决方案--------------------
www).youku.com\/v_show\/id_(.+?).html/i,//1
/http:\/\/v.ku6.com\/show\/(.+?).html/i,//2
/http:\/\/www.tudou.com\/programs\/view\/(.+?)\//i,//3
/http:\/\/you.video.sina.com.cn\/b\/(.+?)-(.+?).html/i,//4
/http:\/\/(.+?).joy.cn\/video\/(.+?).htm/i,//5
/http:\/\/www.openv.com\/play\/(.+?).html/i,//6
/http:\/\/video.pomoho.com\/ent\/(.+?)/i,//7
/http:\/\/www.weplay.cn\/c2\/(.+?).html/i,//8
/http:\/\/v.blog.sohu.com\/u\/vw\/(.+?)/i,//9
///http:\/\/vlog.17173.com\/v\/(.+?)\/(.+?)\/(.+?)\/(.+?)/i,//10
/http:\/\/www.letv.com\/ptv\/vplay\/(.+?)/i,//11
/http:\/\/tv.mofile.com\/([^\[\<\r\n]+?)\//i,//12
/http:\/\/www.boosj.com\/(.+?).html/i,//13
/http:\/\/www.bobmy.com\/flvmovie\/view(.+?).html/i,//14
/http:\/\/v.xgo.com.cn\/(.+?)\/(.+?).html/i,//15
/http:\/\/play.hupo.tv\/tv\/(.+?).html/,//16
/http:\/\/www.nnbbaa.com\/player.php\?id=(.+?)/,//16
/http:\/\/mv.2u.com.cn\/detail_(.+?).html/,//18
/http:\/\/vsearch.cctv.com\/plgs_play-(.+?).html/,//19
);
$ubb_replace = array(,//1
);
$str_1 = preg_replace($ubb_search, $ubb_replace, $str);
if($str !=$str_1){
$str='推荐:';}
else{
$str='';
}
return $str;
}

供参考
------解决方案--------------------
$w1= http://you.video.sina.com.cn/b/25323843-1272884840.html;
$w2=http://v.youku.com/v_show/id_xmziznja2nje2.html;
preg_match('/\/(\d+)-/',$w1,$m1);
preg_match('/id_(.+?)\./',$w2,$m2);
echo $m1[1];
echo '
';
echo $m2[1];
25323843
xmziznja2nje2