我将第一个查询中的任何值保存到数组 $ownco 中 . 使用第二个查询，我尝试获取表的所有行，其中 id 具有与数组 $ownco 中相同的值 .
两个错误：
SQLSTATE [42S22]：未找到列：1054'where子句'中的未知列'Array'：第34行中的数组到字符串转换
$hostname='localhost';
$user='root';
$password='';
$useron = $_COOKIE['username'];
try {
$dbh = new PDO("mysql:host=$hostname;dbname=searchfood",$user,$password);
$dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); // <== add this line
$sql = "SELECT id_post
FROM comments
WHERE username = '$useron'
ORDER BY id DESC"; // oder (longitude between $loo and $lo or latitude between $laa and $la) versuchen
if ($own = $dbh->query($sql)) {// need to add this line in your code
// then after fetchColumn
$ownco = $own->fetchAll();
}
}
catch(PDOException $e)
{
echo $e->getMessage();
}
try {
$dbh = new PDO("mysql:host=$hostname;dbname=searchfood",$user,$password);
$dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); // <== add this line
$sql = "SELECT id, autorid, autor, date, longitude, latitude, title, text, town, time
FROM posts
WHERE id in (" . implode(",",$ownco) . ") // line 34
ORDER BY id DESC"; // oder (longitude between $loo and $lo or latitude between $laa and $la) versuchen
if ($resco = $dbh->query($sql)) {// need to add this line in your code
// then after fetchColumn
$resultcom = $resco->fetchAll();
}
}
catch(PDOException $e)
{
echo $e->getMessage();
}
1 回答
您必须更改提取样式 . 目前您正在使用默认的“FETCH_BOTH”，其结果如下：
如果将fetchAll更改为仅获取列，则应按预期工作 .
结果：
等等