Question

我正在尝试过滤我的MySQL数据库的搜索结果，我想通过从两个下拉框中选择值来过滤结果，第一个框是Club，第二个框是Division，所以我可以过滤结果分部和俱乐部。

我的问题是，当我在俱乐部区域进行选择时没有任何反应，我可以从分区区域中进行选择，结果将显示所选分区，但是当我选择俱乐部时没有任何反应。

    <?php
include("config.php");
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Club Search</title>
<style>
.style1 {
    text-align: center;
}
</style>
</head>
<body>
<fieldset style="width: 327px"><legend>Filter Results</legend>
<form id="filter" name="filter" method="post" action="search.php" style="width: 316px">
<label for="club">Club</label>
<select name="club">
<option value="">--</option>
<?php
    $sql = "SELECT * FROM ".$SETTINGS["data_table"]." GROUP BY club ORDER BY club";
    $sql_result = mysql_query ($sql, $connection ) or die ('request "Could not execute SQL query" '.$sql);
    while ($row = mysql_fetch_assoc($sql_result)) {
        echo "<option value='".$row["club"]."'".($row["club"]==$_REQUEST["club"] ? " selected" : "").">".$row["club"]."</option>";
    }
?>
</select>

    <label>Division</label>
<select name="division">
<option value="">--</option>
<?php
    $sql = "SELECT * FROM ".$SETTINGS["data_table"]." GROUP BY division ORDER BY division";
    $sql_result = mysql_query ($sql, $connection ) or die ('request "Could not execute SQL query" '.$sql);
    while ($row = mysql_fetch_assoc($sql_result)) {
    echo "<option value='".$row["division"]."'".($row["division"]==$_REQUEST["division"] ? " selected" : "").">".$row["division"]."</option>";
    }
?>
</select>
<input type="submit" name="button" id="button" value="Filter" />

  <a href="search.php"> 
  reset</a>
</form></fieldset>
<br /><br />
<fieldset style="width: 720px"><legend>Search Results</legend>
<br/>
<table width="700" border="1" cellspacing="0" cellpadding="0" align="center">
  <tr>
    <td bgcolor="#CCCCCC" class="style1"><strong>Division</strong></td>
    <td bgcolor="#CCCCCC" class="style1"><strong>Club</strong></td>
    <td bgcolor="#CCCCCC" class="style1"><strong>Last Name</strong></td>
    <td bgcolor="#CCCCCC" class="style1"><strong>First Name</strong></td>
    <td bgcolor="#CCCCCC" class="style1"><strong>ID</strong></td>
  </tr>
<?php
if ($_REQUEST["club"]='') {
    $search_string = " AND (club LIKE '%".mysql_real_escape_string($_REQUEST["club"])."%' OR (division LIKE '%".mysql_real_escape_string($_REQUEST["division"])."%')";  
}
if ($_REQUEST["division"]<>'') {
    $search_division = " AND division='".mysql_real_escape_string($_REQUEST["division"])."'";   
}

if ($_REQUEST["club"]='' and $_REQUEST["division"]='') {
    $sql = "SELECT * FROM ".$SETTINGS["data_table"]." WHERE club = '".mysql_real_escape_string($_REQUEST["club"])."' AND division = '".mysql_real_escape_string($_REQUEST["division"])."'".$search_string.$search_division;
}  else {
    $sql = "SELECT * FROM ".$SETTINGS["data_table"]." WHERE id>0".$search_string.$search_division;
}

$sql_result = mysql_query ($sql, $connection ) or die ('request "Could not execute SQL query" '.$sql);
if (mysql_num_rows($sql_result)>0) {
    while ($row = mysql_fetch_assoc($sql_result)) {
?>
  <tr>
    <td class="style1"><?php echo $row['division']?></td>
    <td class="style1"><?php echo $row['club']?></td>
    <td class="style1"><?php echo $row['last_name']?></td>
    <td class="style1"><?php echo $row['first_name']?></td>
    <td class="style1"><?php echo $row['id']?></td>
  </tr>
<?php
    }
} else {
?>
<tr><td colspan="5">No results found.</td></tr>
<?php   
}
?>
</table>
<br/>
</fieldset>
</body>
</html>

更新：我从这里更改了以下代码：

if ($_REQUEST["club"]='') {
$search_string = " AND (club LIKE '%".mysql_real_escape_string($_REQUEST["club"])."%' OR (division LIKE '%".mysql_real_escape_string($_REQUEST["division"])."%')";

}

到此：

if ($_REQUEST["club"]<>'') {
    $search_club = " AND (club LIKE '%".mysql_real_escape_string($_REQUEST["club"])."%' OR (club LIKE '%".mysql_real_escape_string($_REQUEST["club"])."%')";    
}

现在它将允许我按俱乐部和分区过滤但我仍然不能仅靠俱乐部来做！

Answer 1

改变这个：

if ($_REQUEST["club"]='') {
$search_string = " AND (club LIKE '%".mysql_real_escape_string($_REQUEST["club"])."%' OR (division LIKE '%".mysql_real_escape_string($_REQUEST["division"])."%')";

和此：

$sql = "SELECT * FROM ".$SETTINGS["data_table"]." WHERE id>0".$search_string.$search_division;

对此：

if ($_REQUEST["club"]<>'') {
    $search_club = " AND club='".mysql_real_escape_string($_REQUEST["club"])."'";   
}

而且：

$sql = "SELECT * FROM ".$SETTINGS["data_table"]." WHERE id>0".$search_club.$search_division;

它会起作用！

Answer 2

您在=语句中使用if运算符，您希望使用==比较运算符，如下所示：

if ($_REQUEST["club"] == '') {
    $search_string = " AND (club LIKE '%".mysql_real_escape_string($_REQUEST["club"])."%' OR (division LIKE '%".mysql_real_escape_string($_REQUEST["division"])."%')";  
}
if ($_REQUEST["division"] <> '') {
    $search_division = " AND division='".mysql_real_escape_string($_REQUEST["division"])."'";   
}

if ($_REQUEST["club"] == '' and $_REQUEST["division"] == '') {
    $sql = "SELECT * FROM ".$SETTINGS["data_table"]." WHERE club = '".mysql_real_escape_string($_REQUEST["club"])."' AND division = '".mysql_real_escape_string($_REQUEST["division"])."'".$search_string.$search_division;
}  else {
    $sql = "SELECT * FROM ".$SETTINGS["data_table"]." WHERE id>0".$search_string.$search_division;
}

无法获取要搜索的搜索结果

2 个答案: