Webフォームからデータを受け取り、バリデーションと型変換も済ませました。いよいよ、そのデータを、INSERT文でデータベースに保存する、Webアプリケーションの心臓部とも言える処理です。 これまでの知識を総動員し、①バリデーション → ②型キャスト ...

Moving information from an HTML form into a database is a two-step design process. First, create an entry HTML form capable of passing information to a secondary file. Next, create a Hypertext ...

I have an application that reads an image file and puts it into a MEDIUMBLOB. Or at least that's what it's supposed to do. What it actually does is nothing. I can do the database insert, which gives ...

PHPのフォームから、$_POSTで受け取ったデータは、たとえユーザーが123と数字を入力したとしても、全て**string（文字列）型として扱われます。一方、データベースのテーブルでは、idやratingといったカラムはINT（整数）型**で定義されています。この「型の不 ...

How to quickly back up and restore a database with phpMyAdmin Your email has been sent If a web-based GUI is better suited to your admin skills, Jack Wallen wants to show you how to back up and ...

Grafana needs data to be useful. Phil Hajjar walks you through the process of using a MySQL database as a source for data visualization in Grafana. Grafana is one of the most widely-used interactive ...

Community driven content discussing all aspects of software development from DevOps to design patterns. If you plan to do database development with Java and MySQL, the first thing you’ll need to do is ...

Search engines are integral features to any well designed website, but how well does your search engine work? Most simple search engines work by querying one column of a database for the search terms.