相册处理，php中获取一组前缀相同的元素值

        //处理相册start
        $album=M('greenactionalbum');
        $ary1=array();
        foreach ($_POST as $key=>$value){
            if(strpos($key,'picture_')===0){
                array_push($ary1, $value);
            }
        }
        $ary2=array();
        foreach ($_POST as $key=>$value){
            if(strpos($key,'cn_picture_')===0){
                array_push($ary2, $value);
            }
        }
        $ary3=array();
        foreach ($_POST as $key=>$value){
            if(strpos($key,'en_picture_')===0){
                array_push($ary3, $value);
            }
        }
        for($i=0;$i<count($ary1);$i++){
            $data['gaid']=$id;
            $data['titlecn']=$ary2[$i];
            $data['titleen']=$ary3[$i];
            $data['urlsource']=$ary1[$i];
            $data['urlsmall']=$ary1[$i];
            $data['urlmiddle']=$ary1[$i];
            $album->data($data)->add();
        }
        
        //处理相册end