[英]PDO && mysql insert query
I am building a commenting system. 我正在建立一个评论系统。 It works in the same way with MySQL, MySQLi and PDO. 它与MySQL,MySQLi和PDO的工作方式相同。 I have a lot of customers therefore I will have multiple Ids. 我有很多客户,因此我将有多个ID。
In my insert query I am defining a FOREIGN KEY which is the user_id
from the customer's table into the notes
table. 在我的插入查询中,我定义了一个FOREIGN KEY,它是从客户表到notes
表的user_id
。
My question is, after the VALUES
attribute, what should be the first value to identify the specific id for the particular customer I am working on. 我的问题是,在VALUES
属性之后,应该是第一个值来标识我正在处理的特定客户的特定ID。
If I leave the value as VALUES (1,...)
in my database, each comment will always be pointed at user_id (1)
, what can I work on user_id
2
and 3
? 如果我在数据库中将值保留为VALUES (1,...)
,则每个注释将始终指向user_id (1)
,该如何处理user_id
2
和3
?
<?php
// DEFINE QUERY HERE
$query = $dbc->prepare("INSERT INTO `notes`(`user_id`,`entry`, registration_date)
VALUES (1,:entry, NOW())");
//EXCECUTE QUERY
$query->bindValue(':entry', $_POST['entry']);
$query->execute();
echo '<span style="color:red;">Note Added </span>';
$dbc = null;
} else {
echo '<span style="color:red;">Note was not added, insert Admin notes</span>';
}
}
catch(PDOExeption $e){
echo $e->getMessage();
}
?>
Please, remove the value 1 from your statement. 请从您的语句中删除值1。 Instead this, send the current post id and populate this variable dynamically. 相反,发送当前帖子ID并动态填充此变量。 Also set the Id from your user table to auto incrementing. 还将用户表中的ID设置为自动递增。
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