I have a many-to-many MySQL database with three tables entry, tag, and entry_tag.
entry table has id INT AUTO_INCREMENT PRIMARY KEY, title TEXT and entry TEXT columns
tag table has id INT AUTO_INCREMENT PRMARY KEY and tag VARCHAR(15) columns
entry_tag is a mapping tables between entry and tag, and has entry_id INT and tag_id INT, entry_id and tag_id creates PRIMARY KEY.
Now, I would like to INSERT entry.title and entry.entry and related tags tag.tag to the database and respective tables. I would also like to INSERT appropriate mapping information into entry_tag table. Could anyone tell me how can I possible do it? I am using PHP. How can I get the entry.id and tag.id and link them together in the mapping table?
I have:
$sql_query = "INSERT INTO entry SET
title = '$title',
entry = '$entry'";
if (!mysqli_query($link, $sql_query)) {
$error = 'Error adding submitted entry.';
include 'includes/error.html.php';
exit();
}
$sql_query = "INSERT INTO tag SET
tag = '$tag'";
if (!mysqli_query($link, $sql_query)) {
$error = 'Error adding submitted entry.';
include 'includes/error.html.php';
exit();
}
Now, I would like to perform:
$sql_query = "INSERT INTO entry_tag SET
entry_id = '$entry.id',
tag_id = '$tag.id'";
But I stuck on getting the right $entry.id and $tag.id.
使用mysql_insert_id()
捕获最后一个插入的ID
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.