【发布时间】：2018-06-29 23:57:57
【问题描述】：
我一直试图让我从 mysql 数据库中选择、排序和返回查询，但它一直返回整个信息表，而不是我试图获取的选定信息。我有 HTML 和 PHP 代码。有人可以帮帮我吗？每当我在 WHERE 字段中的项目上包含“：”时，我都会收到“未定义”错误，例如未定义类别等... 这是代码：
<?php
if(isset($_GET['search'])) {
try {
$dsn = 'mysql:host=localhost;dbname=bajan_glasses';
$db = new PDO($dsn, 'glasses_cms', '8019');
$sql = 'SELECT id, category, style, color, material, size, price, image,
position, caption, visible
FROM eyeglasses
WHERE id LIKE id AND category = category AND style = style AND
color = color
AND material = material AND size = size AND price = price AND
image = image AND position = position
AND caption = caption AND visible = visible
ORDER BY id';
// <!--------------------- when ":" is added to the above , the table
does not display------------->
$stmt = $db->prepare($sql);
$stmt->bindValue(':id', '%' . $_GET['id'] . '%');
// $stmt->bindParam(':id', $_GET['id'], PDO::PARAM_INT);
$stmt->bindParam(':category', $_GET['category'], PDO::PARAM_STR);
$stmt->bindParam(':style', $_GET['style'], PDO::PARAM_STR);
$stmt->bindParam(':color', $_GET['color'], PDO::PARAM_STR);
$stmt->bindParam(':material', $_GET['material'], PDO::PARAM_STR);
$stmt->bindParam(':size', $_GET['size'], PDO::PARAM_INT);
$stmt->bindParam(':price', $_GET['price'], PDO::PARAM_INT);
$stmt->bindParam(':image', $_GET['image'], PDO::PARAM_INT);
$stmt->bindParam(':position', $_GET['position'], PDO::PARAM_INT);
$stmt->bindParam(':caption', $_GET['caption'], PDO::PARAM_STR);
$stmt->bindParam(':visible', $_GET['visible'], PDO::PARAM_INT);
// $stmt->execute('bindParam'); // use://if still getting token error.
$stmt->execute();
if (isset($errorInfo[2])) {
$error = $errorInfo[2];
}
} catch (Exception $e) {
$error = $e->getMessage();
}
}
?>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>PDO: SELECT Loop</title>
<link href="../../styles/styles.css" rel="stylesheet" type="text/css">
</head>
<body>
<form method="get" action="<?php echo $_SERVER['PHP_SELF']; ?>">
<fieldset>
<p>
<label for="id">id </label>
<select name="id" id="id">
<?php
//$material = array('woo' => 'wood');
//$material = array('ace' => 'acetate');
///$material = array('pla' => 'plastic');
//$material = array('ste' => 'steel');
for ($id =0; $id <=1 ; $id++) {
echo "<option>$id</option>";
};
?>
</select>
<label for="category ">category </label>
<select name="category " id="category ">
<option> </option>
<option>men</option>
<option>women</option>
<option>children</option>
</select>
<label for="style ">style </label>
<select name="style " id="style ">
<option selected value="style">style</option>
<option>aviator</option>
<option>rectangular</option>
<option>round</option>
<option>square</option>
<option>vintage</option>
<option>black</option>
</select>
<label for="color ">color </label>
<select name="color " id="color ">
<option></option>
<option>white</option>
<option>blue</option>
<option>green</option>
<option>yellow</option>
<option>brown</option>
<option>black</option>
<option>red</option>
<option>pink</option>
<option>pink</option>
</select>
<label for="material">Material </label>
<select name="material" id="material">
<?php
//$material = array('woo' => 'wood');
//$material = array('ace' => 'acetate');
///$material = array('pla' => 'plastic');
//$material = array('ste' => 'steel');
// for ($material = 'wood'+'steel'; $material <= 'plastic'; $material++)
{
// echo "<option>$material</option>";
// };
?>
<option> </option>
<option>wood</option>
<option>acetate</option>
<option>plastic </option>
<option>steel </option>
</select>
<label for="size">size </label>
<select name="size" id="size">
<?php
$size = array('sma' => 'small');
$size = array('med' => 'medium');
$size = array('lar' => 'large');
for ($size= 'small'; $size<= 'medium'; $size++) {
echo "<option>$size</option>";
};
?>
<option> </option>
<option>small</option>
<option>medium</option>
<option>large</option>
</select>
<label for="price ">price</label>
<select name="price " id="price ">
<option selected value="price"></option>
<option>$199</option>
<option>rectangular</option>
<option>$259</option>
<option>$129</option>
<option>$111</option>
<option>$111</option>
</select>
<label for="style ">image </label>
<select name="image " id="image ">
<option ></option>
</select>
<label for="style ">position</label>
<select name="style " id="style ">
<option selected value="position"></option>
<option>1</option>
<option>2</option>
<option>3</option>
</select>
<label for="style ">caption</label>
<select name="style " id="style ">
<option selected value="style"></option>
<option>Choose from Mens styles...</option>
<option>men glasses</option>
<option>women glasses</option>
<option> children glasses...</option>
</select>
<label for="visible ">visible </label>
<select name="visible " id="visible ">
<option></option>
<option>1</option>
<option>2</option>
<option>3</option>
</select>
<input type="submit" name="search" value="Search">
</p>
</fieldset>
</form>
<?php if (isset($_GET['search'])) {
$row = $stmt->fetch();
if ($row) {
?>
<table>
<tr>
<th>id</th>
<th>category</th>
<th>style</th>
<th>color</th>
<th>material</th>
<th>size</th>
<th>price</th>
<th>image</th>
<th>position</th>
<th>caption</th>
<th>visible</th>
</tr>
<?php /******** foreach ($db->query($sql) as $row) {*********/?>
<?php do { ?>
<tr>
<td><?php echo $row['id'];?></td>
<td><?php echo $row['category'];?></td>
<td><?php echo $row['style'];?></td>
<td><?php echo $row['color'];?></td>
<td><?php echo $row['material'];?></td>
<td><?php echo $row['size'];?></td>
<td><?php echo $row['price'];?></td>
<td><?php echo $row['image'];?></td>
<td><?php echo $row['position'];?></td>
<td><?php echo $row['caption'];?></td>
<td><?php echo $row['visible'];?></td>
</tr>
<?php } while ($row = $stmt->fetch()); ?>
</table>
<?php } else {
echo '<p>No results found.</p>';
}}
} ?>
</body>
</html>
【问题讨论】：
-
请阅读minimal reproducible example并采取行动。包括“最小”部分。