我遇到了以前从未见过的警告:
警告:PDOStatement::execute() [pdostatement.execute]: SQLSTATE[HY093]: 无效参数号:混合命名参数和位置参数...
参考下面的 PDO 查询(为了便于阅读,做了简化的功能):
$offset = 0;
$limit = 12;
function retrieve_search_posts($searchfield, $offset, $limit){
$where = array();
$words = preg_split('/[\s]+/',$searchfield);
array_unshift($words, '');
unset($words[0]);
$where_string = implode(" OR ", array_fill(0,count($words), "`post_title` LIKE ?"));
$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 $where_string
ORDER BY post_date
LIMIT :offset, :limit
DESC";
$stmt = $dbh->prepare($query);
foreach($words AS $index => $word){
$stmt->bindValue($index, "%".$word."%", PDO::PARAM_STR);
}
$stmt->bindParam(':offset', $offset, PDO::PARAM_INT);
$stmt->bindParam(':limit', $limit, PDO::PARAM_INT);
$stmt->execute();
$searcharray = $stmt->fetchAll(PDO::FETCH_ASSOC);
return $searcharray;
}
函数和 PDO 查询在查询中不包含偏移量和限制变量的情况下可以正常工作。那么可能导致此警告的原因是什么?
谢谢