PHP中对淘宝URL中ID提取

 <?php
 $taobao = 'taobao.com';
 $tmall = 'tmall.com';
 $guojitmall = 'tmall.hk';
 $juhuasuan = 'ju.taobao.com';

 /*
 取宝贝的id

 休闲e族

 */
 function quid($strurl) {
     $strurl = strtolower ( $strurl );
     if (strpos ( $strurl, 'id' ) !== false) {
         $arr = explode ( '?', $strurl );
         $arr = explode ( '&', $arr [1] );
         $NO = 0;
         foreach ( $arr as $k => $v ) {
             if (is_string ( $v )) {
                 //判断是否含有id
                 if (strpos ( $v, 'id' ) !== false) {
                     //处理含有item或者num项 返还id数
                     if (strpos ( $v, 'item' ) !== false || strpos ( $v, 'num' ) !== false) {
                         //echo $v,'<br/>';
                         $i = strrpos ( $v, '=' );
                         $str = substr ( $v, $i + 1 );
                         if (is_numeric ( $str )) {
                             return $NO = $str;
                         }
                     } else {
                         //echo $v,'<br/>';
                         $i = strrpos ( $v, '=' );
                         $str = substr ( $v, $i + 1 );
                         $x = strlen ( $str );
                         if (is_numeric ( $str )) {
                             if ($x ==11) {
                                 $NO = $str;
                             } else if ($NO == 0 || ($x > 9 && $x < 11)) {
                                 $NO = $str;
                             }
                         }
                     }
                 }
             }
         }
         return $NO;
     }
 }
 ?>