求教用TP做类似淘宝那种多级筛选用if语句控制发现传一两个字段还好控制，传三个字段以上就不好控制了，筛选出来的数据就不对了。有什么好的方法吗？
<br /> //多级筛选<br /> <br /> $name=$_GET[pid];<br /> $brand=$_GET[theme];<br /> $carage=$_GET[price];<br /> echo $carage;<br /> <br /> <br /> if($name="泵车" AND $brand="三一"){<br /> $handmebuyinfo=M("handmebuyinfo");<br /> $map['name']=$name;<br /> $map['brand']=$brand;<br /> //$map['carage']=$carage;<br /> $row=$handmebuyinfo->where($map)->select();<br /> dump($row);<br /> }<br /> <br /> if($name=='' OR $brand=='' OR $carage==''){<br /> $handmebuyinfo=M("handmebuyinfo");<br /> $map['name']=$name;<br /> $map['brand']=$brand;<br /> $map['carage']=$carage;<br /> $map['_logic'] = 'OR';<br /> $row=$handmebuyinfo->where($map)->select();<br /> dump($row);<br /> }<br />
$a = array(<br /> 'a' => 1,<br /> 'b' => '',<br /> 'c' => 0,<br />);<br />print_r(array_diff($a, array('')));<br />print_r(array_diff($a, array('', 0)));Array<br />(<br /> [a] => 1<br /> [c] => 0<br />)<br />Array<br />(<br /> [a] => 1<br />)<br /><br />
