PHP 将值插入两个 table 并将这些 table 中的键插入 link table

Question

我是 PHP 的新手，我有兴趣在名为 sub_credits 的 link table 中添加来自两个 table 的主键 ID （插入 submit_id 和 credits_id）作为在 table 中插入值后的外键。任何帮助都会很棒！这是我的代码：

                    //write the data to the database
                    $query1 = "INSERT INTO submissions (user_id, date, " . 
                             "submission_type, title, zipfile, " . 
                             "copyright, review)" . 
                             "VALUES ('" . $_SESSION['user_id']. "', NOW(), " . 
                             "'$submission_type', '$title', " . 
                             "'$zipfile', '$copyright', '$review' )";
                    $query2 = "INSERT INTO credits (credits) VALUES ('$credits')";
                    mysqli_query($dbc, $query1)
                            or die ('Data not inserted.');
                    mysqli_query($dbc, $query2)
                            or die ('Data not inserted.');

Answer 1

您可以使用 mysql_insert_id();

获取 ID

$query1 = "INSERT INTO submissions (user_id, date, " . 
                         "submission_type, title, zipfile, " . 
                         "copyright, review)" . 
                         "VALUES ('" . $_SESSION['user_id']. "', NOW(), " . 
                         "'$submission_type', '$title', " . 
                         "'$zipfile', '$copyright', '$review' )";
mysqli_query($dbc, $query1) or die ('Data not inserted.');
$id1 = mysql_insert_id();

$query2 = "INSERT INTO credits (credits) VALUES ('$credits')";

mysqli_query($dbc, $query2) or die ('Data not inserted.');
$id2 = mysql_insert_id();

您可以使用 $id1 和 $id2 使用新的插入查询插入到新的 table。

$query3 = "INSERT INTO new_table(submissions_id,credits_id) VALUES ('$id1','$id2')";
mysqli_query($dbc, $query3) or die ('Data not inserted.');

其中 submissions_id,credits_id 是新 table

的外键

PHP 将值插入两个 table 并将这些 table 中的键插入 link table

PHP Insert values into two tables and insert keys from those tables into link table

php

mysql

mysqli

foreign-keys

insert-into