我创建了一个foreach循环来将数据添加到MySQL数据库中,并且在第一行添加到数据库后,我收到错误“mysqli :: query():无法获取mysqli”。
PHP DB连接
$db = new mysqli($db_hostname, $db_username, $db_password, $db_database);
if ($db->connect_error) {
die("Connection failed: " . $db->connect_error);
}
然后我有另一块脚本收集我需要的数据。然后将数据添加到foreach插入循环
PHP FOREACH
foreach($RSS_DOC->channel->item as $RSSitem)
{
$item_id = md5($RSSitem->title);
$fetch_date = date("Y-m-j G:i:s");
$item_title = $RSSitem->title;
$item_date = date("Y-m-j G:i:s", strtotime($RSSitem->pubDate));
$item_url = $RSSitem->link;
echo "Processing item '" , $item_id , "' on " , $fetch_date , "<br/>";
echo $item_title, " - ";
echo $item_date, "<br/>";
echo $item_url, "<br/>";
$sql = "INSERT INTO rssingest (item_id, feed_url, item_title, item_date, item_url, fetch_date)
VALUES ('" . $item_id . "', '" . $feed_url . "', '" . $item_title . "', '" . $item_date . "', '" . $item_url . "', '" . $fetch_date . "')";
if ($db->query($sql) === TRUE) { // <- THIS IS LINE 170
echo "New record created successfully";
} else {
echo "Error: " . $sql . "<br>" . $db->error;
}
$db->close();
}
第一行被添加到数据库中没有问题。第二行和那之后的每一行返回“mysqli :: query():无法在第170行获取mysqli”。
我可能出错的任何想法?
答案 0 :(得分:1)
问题可能是循环内的$db->close()
。尝试在循环后关闭数据库。
foreach($RSS_DOC->channel->item as $RSSitem)
{
$item_id = md5($RSSitem->title);
$fetch_date = date("Y-m-j G:i:s");
$item_title = $RSSitem->title;
$item_date = date("Y-m-j G:i:s", strtotime($RSSitem->pubDate));
$item_url = $RSSitem->link;
echo "Processing item '" , $item_id , "' on " , $fetch_date , "<br/>";
echo $item_title, " - ";
echo $item_date, "<br/>";
echo $item_url, "<br/>";
$sql = "INSERT INTO rssingest (item_id, feed_url, item_title, item_date, item_url, fetch_date)
VALUES ('" . $item_id . "', '" . $feed_url . "', '" . $item_title . "', '" . $item_date . "', '" . $item_url . "', '" . $fetch_date . "')";
if ($db->query($sql) === TRUE) {
echo "New record created successfully";
} else {
echo "Error: " . $sql . "<br>" . $db->error;
}
}
$db->close();