创建下拉列表PHP数据库搜索？

Question

所以我想创建一个下拉列表搜索来搜索我的数据库在PHP和我的SQL。到目前为止，我已经能够创建一个简单的文本搜索，它将我输入搜索框时需要的结果带回。但我希望能够从下拉列表中选择一个选项，而不是输入它。我还没有遇到这方面的解决方案，并会感谢任何帮助。

这里是我的search.php代码...

<?php 

mysql_connect ("localhost", "root","") or die (mysql_error()); 
mysql_select_db ("schoolsni"); 


$term = $_POST['term']; 

$sql = mysql_query("SELECT * FROM product WHERE model LIKE '%$term%'"); 

while ($row = mysql_fetch_array($sql)){ 
    echo 'Product ID '.$row['product_id']; 
    echo '<br/> Model: '.$row['model']; 
    echo '<br/> quantity: '.$row['quantity']; 
    echo '<br/><br/>'; 
    } 

?> 

这里是我的html代码...

<div class="UFcol1"> 
    <form action="search.php" method="post"> 
     <select name="term"> 
    <option value="product">product</option> 
    <option value="product1">product 1</option> 
    <option value="product3">product 3</option> 
    <option value="product4">product 4</option> 
    </select> 
     <input type="submit" name="submit" value="Submit" /> 
    </form> 
</div> 

谢谢...

Answer 1

<?php 
$mysqli = new mysqli('host', 'user', 'pass', 'table'); 
if($_POST['submit']){ 
    $value = $mysqli->real_escape_string($_POST['term']); 
    $result = $mysqli->query("SELECT * FROM product WHERE model LIKE %$value%"); 
while($row = $result->fetch_assoc()){ 
    echo $row['field']; 
} 
}else{ 
    $results = $mysqli->query("SELECT DISTINCT procucts.name from products WHERE products.stock = 1"); 
    $options = '<select>'; 
    while($row = $results->fetch_assoc()){ 
    $options .= "<option value='{$row['name']}'>$row['name']</option>"; 
    } 
    $options .= '</select>'; 
?> 

    <div class="UFcol1"> 
    <form action="search.php" method="post"> 
    <?=$options?> 
     <input type="submit" name="submit" value="Submit" /> 
    </form> 
</div> 
<?php } ?> 

这是快速的代码，并且可能不是100％正确我还排除了诸如检查连接是否成功的问题。 php.net有大量的信息和例子。

编辑：添加自我填充选项列表从disticnt数据库值。

Answer 2

你可以使用表本身填充选择框：

$sql = mysql_query('SELECT model FROM product ORDER BY model'); 
$models = array(); 
while ($row = mysql_fetch_array($sql)){ 
    $models[] = $row; 
} 
?> 
<form action="search.php" method="post"> 
    <select name="term"> 
    <?php 
    foreach ($models as $model) { 
    ?> 
    <option value="<?php echo $model['model']?>"><?php echo $model['model']?></option> 
    <?php 
    } 
    ?> 
    </select> 
    <input type="submit" name="submit" value="Submit" /> 
</form> 

要获得通用模型根目录的列表，你可以做这样的事情或许是：

$sql = mysql_query('SELECT model FROM product ORDER BY model'); 
$models = array(); 
while ($row = mysql_fetch_array($sql)){ 
    /* 
    * Break the model name up into parts, assuming each part 
    * is separated by a space. Then just use the first part 
    * to build up an array of common model starts. 
    * 
    * Because we're using the sub-part as a key, we'll only 
    * get a single instance of each one. 
    */ 

    $modelParts = explode(' ', $row['model']); 

    // e.g. $models['product'] = 'product' 

    $models[$modelParts[0]] = $modelParts[0]; 
} 

事实上，您可能可以使用这个以建立一个既有完整型号名称又有部分型号的选择框：

$sql = mysql_query('SELECT model FROM product ORDER BY model'); 
$models = array(); 
while ($row = mysql_fetch_array($sql)){ 
    $modelParts = explode(' ', $row['model']); 
    $models[$modelParts[0]][] = $row['model']; 
} 

// Equivalent to ending up with something like: 
// $models['product'] = array('product 1', 'product 2'); 

然后你就可以通过他们循环，并推出了像这样的列表：

<select name="term"> 
    <?php foreach ($models as $modelRoot => $modelEntries) { ?> 
    <option value="<?php echo $modelRoot?>"><?php echo $modelRoot?></option> 
    <?php foreach ($modelEntries as $model) { ?> 
     <option value="<?php echo $model['model']?>"><?php echo $model['model']?></option> 
    <?php } ?> 
    <?php } ?> 
    </select> 

Answer 3

<?php 

mysql_connect ("localhost", "root","") or die (mysql_error()); 
mysql_select_db ("schoolsni"); 


$term = $_POST['term']; 

$sql = mysql_query("SELECT * FROM product WHERE model LIKE '%$term%'"); 
?> 
<select name='term'> 
<?php 
while ($row = mysql_fetch_array($sql)){ 
?> 
    <option value='<?php echo $row['product_id']?>'><?php echo $row['model'];?></option> 
<?php 

} 
?> 
</select>