PHP multifunctional search_PHP tutorial

$flag=$_POST['flag']; 

$sosoval=$_POST['keyword']; 

$sosoquery="where 1=1 "; 

if(!emptyempty($sosoval)&&$flag!=='-1'){ 

//$sosoquery.="and (title like '%$sosoval%') or (keyword like '%$sosoval%') or (author like '%$sosoval%')"; 

if($flag=='1'){ 

    $sosoquery.="and (author like '%$sosoval%')"; 

}elseif ($flag=='2'){ 

    $sosoquery.="and (title like '%$sosoval%')"; 

}else{ 

    $sosoquery.="and (keyword like '%$sosoval%')"; 

} 

} $sql="select * from article $sosoquery order by id desc"; 

$rs=$db->query($sql); 

$date=array(); 

while ($row=$db->fetch_array($rs)){ 

    $date[]=$row; 

} 

$tpl->assign('soso',$date); 

$tpl->assign('appname','信息示例'); 

$tpl->display('index/up.tpl'); 

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