我正在尝试使用以下代码在搜索字段中使用单词来搜索数据库。
出于某种原因,我收到以下错误
警告:PDOStatement::bindValue() [pdostatement.bindvalue]: SQLSTATE[HY093]: 参数号无效:列/参数从 1 开始。
这是功能代码:
// Retrieve search results
function retrieve_search_posts($searchfield){
//test the connection
try{
//connect to the database
$dbh = new PDO("mysql:host=localhost;dbname=mjbox","root", "usbw");
//if there is an error catch it here
} catch( PDOException $e ) {
//display the error
echo $e->getMessage();
}
$where = array();
$words = preg_split('/[\s]+/',$searchfield);
$total_words = count($searchfield);
for($i = 0; $i < count($words); $i++){
$where[] .= "`post_title` LIKE ?";
}
$where_string = implode(" OR ", $where);
$query = "
SELECT p.post_id, post_year, post_desc, post_title, post_date, img_file_name, p.cat_id
FROM mjbox_posts p
JOIN mjbox_images i
ON i.post_id = p.post_id
AND i.cat_id = p.cat_id
AND i.img_is_thumb = 1
AND post_active = 1
WHERE post_title LIKE ?
ORDER BY post_date
DESC";
$stmt = $dbh->prepare($query);
foreach($words AS $index => $word){
$stmt->bindValue($index, $word, PDO::PARAM_STR);
}
$stmt->execute();
$searcharray = $stmt->fetchAll(PDO::FETCH_ASSOC);
return $searcharray;
}
我做错了什么导致输出的错误消息?