插入存在的列中的表

Suppose I have a very large array of information for a user:

假设我为用户提供了大量信息:

$user=array(
"name"=>"john",
"ip"=>"xx.xx.xx.xx",
"email"=>"john@something.com",
//lots more values
)

Let's also suppose that this information needs to go into more than one table. For instance a username needs to go table users, address needs to go into a details table, etc.

我们还假设这些信息需要进入多个表。例如,用户名需要去表用户,地址需要进入详细信息表等。

Now, I use a certain self-made function to insert into my tables that matches array keys to column names and array values to the values being inputted. Something similar to this:

现在,我使用某个自制函数插入到我的表中,这些函数将数组键与列名和数组值匹配到输入的值。与此类似的东西:

function insert_sql($table, arr $values){
    GLOBAL $dbc;
    $sql="INSERT INTO `$table` (".implode(array_keys($values), ", ").") VALUES (".implode(array_values($values), ", ").")";
    $dbc->prepare($sql)->execute();
    return $dbc->lastInsertId();

}
//I don't actually use this function, just trying to show you what is being accomplished.

The problem is that my function uses all the keys and all the values, so when I just need certain parts of the array put into multiple tables, it doesn't work.

问题是我的函数使用了所有键和所有值,所以当我只需要将数组的某些部分放入多个表时,它就不起作用了。

The question is:

问题是:

How do I make an INSERT statement ignore a column if it doesn't exist? So if I insert name,email,address, into table users, but this table doesn't have an address column, I need it to insert the row with the name and email but simply ignore the fact that the address column is not there.

如果列不存在,如何使INSERT语句忽略该列?因此,如果我将名称,电子邮件,地址插入表用户,但此表没有地址列,我需要它插入带有名称和电子邮件的行,但只是忽略了地址列不存在的事实。

EDIT: The other option is to make an array with the columns of a table and use it to filter the values array. Although I am not really sure how to set this up.

编辑:另一个选项是使用表的列创建一个数组,并使用它来过滤值数组。虽然我不确定如何设置它。

2 个解决方案

#1

Find given table column names:

查找给定的表列名称:

SELECT 
column_name
FROM 
information_schema.columns
WHERE 
table_name =  'tablename'

And then just whitelist your keys in $values array

然后在$ values数组中将密钥列入白名单

Example:

function insert_sql($table, array $values){
        global $connection;
        $query = "SELECT column_name FROM information_schema.columns WHERE table_name =  :tablename";
        /* @var $stmt PDOStatement */
        $stmt  = $connection->prepare($query);
        $stmt->execute(array(
            'tablename' => $table
        ));
        $columns = array_flip($stmt->fetchAll(PDO::FETCH_COLUMN, 0));
        $values  = array_intersect_key($values, $columns);
        var_dump($values);
    }

#2

How do I make an INSERT statement ignore a column if it doesn't exist? So if I insert name,email,address, into table users, but this table doesn't have an address column, I need it to insert the row with the name and email but simply ignore the fact that the address column is not there.

如果列不存在,如何使INSERT语句忽略该列?因此,如果我将名称,电子邮件,地址插入表用户,但此表没有地址列,我需要它插入带有名称和电子邮件的行,但只是忽略了地址列不存在的事实。

You can't

Instead you should map your data to the appropriate tables with separate inserts.

相反,您应该将数据映射到具有单独插入的相应表。

#1