亲爱的朋友，我有两个功能，也许我将来会有更多，但关键是，当用户根据同一文本字段上的邮政编码搜索酒店时，我想要这个功能应该调用hotel_by_postelcode（$textvalue），当我根据国家/地区进行搜索时，函数应调用hotel_by_country（$textvalue）。以下是应该显示结果的代码，但它并没有像应该的那样显示结果。
<?php require_once("includes/header.php");?>
<?php require_once("includes/connection.php")?>
<?php
if(isset($_POST['submit'])){
$message ="";
$textvalue = $_POST['search'];
if(empty($allhotels = hotel_by_postel_code($textvalue)) || empty($allhotels = hotel_by_country($textvalue))){
$message = "There is no record in the database";
}
}else{
$allhotels = select_all_hotels();
}
?>
<div class="cBoth"></div>
<div id="sep"></div>
<div id="mainContentSection" class="Calign">
<div id="detaillist">
<div id="searching" class="Calign">
<form action="list2.php" method="POST" id="searchForm">
<fieldset>
<input type="text" name="search" />
<input type="submit" name ="submit" value="Search" /></fieldset>
</form>
</div><!--End of searching-->
<?php
if(isset($message)){
echo"<div id='"listtitle'">";
echo"<h2>".$message."</h2>";
echo"</div>";//End of listtitle div
}else{
echo"<div id='"listtitle'">";
echo"<h2>Property Name</h2> <h2>Location</h2> <h2>Guest Rating</h2><h2>Hotel Rank</h2><h2>Per night</h2>";
echo"</div>";
}
?><!--End of listtitle-->
<div class="cBoth"></div>
<?php
$i=0;
while($hotels_set = mysql_fetch_array($allhotels)){
$room_rate = rateforhotel($hotels_set['hotel_id']);
if(!empty( $hotels_set['hotel_name']) && ($room_rate['hotel_id'] == $hotels_set['hotel_id'] ) ){
if($i % 2 == 0) { echo "<div id='"innerlisteven'">"; }
else
{
echo"<div id='"innerlistodd'">";
}
echo"<h2><a href ='"#'">". $hotels_set['hotel_name'] ."</a></h2>";
echo"<h2>". $hotels_set['country'] ."</h2>";
if(!intval($hotels_set['star'])){
echo"<h2>". $hotels_set['star'] ."</h2>";
}else{
echo"<h2>". $hotels_set['star'] . "<img src='"img/repetimg/star.png'"/></h2>";
}
echo"<h2>". $hotels_set['star'] . "</h2>";
echo"<h2>". $room_rate['rate'] . "</h2>";
echo"</div>";
$i++;
}//end of if()
}//end of hotel while
mysql_close($con);
?>
</div><!--End of details-->
<div id="advertlisting">
<div id="search">search menu</div>
</div><!--End of adverts left-->
</div><!--End of end of maincontent-->
<div class="cBoth"><!-- clear Both--></div>
<?php require_once("includes/footer.php"); ?>
下面的代码是函数本身
function hotel_by_country($country){
global $connection;
$query = "SELECT * FROM Hotels WHERE country ='{$country}'";
$hotel_set = mysql_query($query,$connection);
confirm_query($hotel_set);
return $hotel_set;
}
function hotel_by_postel_code($postal){
global $connection;
$query = "SELECT * FROM Hotels WHERE hotel_postal_code ='{$postal}'";
$hotel_set = mysql_query($query,$connection);
confirm_query($hotel_set);
return $hotel_set;
}
function select_all_hotels(){
global $connection;
$query = "SELECT *
FROM Hotels";
$hotel_set = mysql_query($query,$connection);
confirm_query($hotel_set);
return $hotel_set;
}
您缺少empty函数的右括号)（一个在OR之前，一个在条件末尾）
更改：
if(empty($allhotels = hotel_by_postel_code($textvalue) OR empty($allhotels = hotel_by_country($textvalue))
至：
if(empty($allhotels = hotel_by_postel_code($textvalue)) OR empty($allhotels = hotel_by_country($textvalue))){
接下来，我将把这条线分成几行：
$allhotels1 = hotel_by_postel_code($textvalue);
$allhotels2 = hotel_by_country($textvalue);
echo "allhotels1 = $allhotels1; allhotels1 = $allhotels1'n";//for debug
if(empty($allhotels1) OR empty($allhotels2){...
最后一件事——你确定应该是OR而不是AND吗？
if(is_numermic($textvalue))
hotel_by_postel_code($textvalue)
else
hotel_by_country($textvalue)
我认为你的问题在于这个代码
if(empty($allhotels = hotel_by_postel_code($textvalue)) || empty($allhotels = hotel_by_country($textvalue))){
$message = "There is no record in the database";
}
首先用hotel_by_postel_code($textvalue)填充$allhotels。然后用$allhotels = hotel_by_country($textvalue)覆盖它。
此外，您应该将||替换为&&，因为只有当两个函数都不返回值时才需要消息。
尝试
$allhotels = hotel_by_postel_code($textvalue);
if(empty($allhotels)) {
$allhotels = hotel_by_country($textvalue);
if(empty($allhotels)) {
$message = "There is no record in the database";
}
}
经过多次跟踪和错误，我找到了解决方案，下面是我发现的最好的选择，也许将来有人会遇到同样的问题。需要记住的一点是，IF和Else中的选项可以很容易地移动到单独文件上的函数中。我还添加了一个Html菜单来选择我要搜索的选项类型，在这种情况下，它是过滤器菜单。
<?php
error_reporting(E_ALL);
ini_set('display_errors','1');?>
<?php require_once("includes/header.php");?>
<?php require_once("includes/connection.php")?>
<?php
if(isset($_POST['search']) && $_POST['search']!= "") {
if($_POST['filter'] == "HotelName"){
$search = $_POST['search'];
$sqlquery = "SELECT * FROM Hotels WHERE hotel_name LIKE '%$search%' OR description LIKE '%$search%'";
$allhotels = mysql_query($sqlquery, $connection) or die("Sorry Something wrong".mysql_error());
}else if($_POST['filter'] == "country"){
$search = $_POST['search'];
$sqlquery = "SELECT * FROM Hotels WHERE country LIKE '%$search%' OR hotel_address LIKE '%$search%'";
$allhotels = mysql_query($sqlquery, $connection) or die("Sorry Something wrong".mysql_error());
}else if($_POST['filter'] == "Postal"){
$search = $_POST['search'];
$sqlquery = "SELECT * FROM Hotels WHERE hotel_postal_code LIKE '%$search%'";
$allhotels = mysql_query($sqlquery, $connection) or die("Sorry Something wrong".mysql_error());
}
}
?>
<div class="cBoth"></div>
<div id="sep"></div>
<div id="mainContentSection" class="Calign">
<div id="detaillist">
<div id="searching" class="Calign">
<form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="POST" id="searchForm">
<fieldset>
<input type="text" name="search" />
<select name="filter">
<option value="HotelName">Hotel Name</option>
<option value="country">Country</option>
<option value="Postal">Postal Code</option>
</select>
<input type="submit" name ="submit" value="Search" />
</fieldset>
</form>
</div><!--End of searching-->
<div id="listtitle">
<h2>Property Name</h2> <h2>Location</h2><h2>Hotel Rank</h2><h2>Guest Rating</h2><h2>Per night</h2>
</div><!--End of listtitle-->
<div class="cBoth"></div>
<?php
if(!isset($allhotels)){
$allhotels = select_all_hotels();
}
$i=0;
while($hotels_set = mysql_fetch_array( $allhotels)){
$room_rate = rateforhotel($hotels_set['hotel_id']);
if(!empty( $hotels_set['hotel_name']) && ($room_rate['hotel_id'] == $hotels_set['hotel_id'] ) ){
if($i % 2 == 0) { echo "<div id='"innerlisteven'">"; }
else
{
echo"<div id='"innerlistodd'">";
}
echo"<h2><a href='"desti_list.php?details=" . urlencode($hotels_set["hotel_id"]).
"'">" . $hotels_set['hotel_name'] ."</a></h2>";
echo"<h2>". $hotels_set['country'] ."</h2>";
if(!intval($hotels_set['star'])){
echo"<h2>". $hotels_set['star'] ."</h2>";
}else{
echo"<h2>". $hotels_set['star'] . "<img src='"img/repetimg/star.png'"/></h2>";
}
echo"<h2>". $hotels_set['star'] . "</h2>";
echo"<h2>". $room_rate['rate'] . "</h2>";
echo"</div>";
$i++;
/*
echo"<h3><a href='"desti_list.php?details=" . urlencode($hotels_set["hotel_id"]).
"'">Find Out More</a></span></h3>";
*/
}//end of if()
}//end of hotel while
mysql_close($connection);
?>
</div><!--End of details-->
<div id="advertlisting">
<div id="search">search menu</div>
</div><!--End of adverts left-->
</div><!--End of end of maincontent-->
<div class="cBoth"><!-- clear Both--></div>
<?php require_once("includes/footer.php"); ?>