Implementing CRUD (Create, Read, Update, Delete) in PHP with databases

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Web application development is a complex task that involves handling data efficiently and reliably. One of the fundamental concepts in application development is CRUD, which consists of the basic operations of Creating, Reading, Updating and Deleting data in a database.

In this article, we will explore how to loan database CRUD in PHP , a programming language widely used in web development, along with databases to manage data effectively.

Table of contents

PHP: Create.
PHP: Read.
PHP: Update.
PHP: Delete.
Publication summary.
PHP: Create.
The create operation in CRUD refers to the ability to add new data to a database. In PHP, this can be achieved by using a combination of HTML and PHP to create a data entry form and process that information to insert it into the database .

First, we need to design an HTML form with fields corresponding to the data we want to capture. Then, using PHP, we can get the values ​​entered into the form and run a SQL query to insert that data into the database.

PHP: Read.
The read operation in CRUD involves retrieving data stored in a database and displaying it on a user interface. In PHP, we can use SQL SELECT queries to retrieve the desired data from the database.

We can then process the query results and display them in the user interface using HTML and PHP. This allows us to display database-specific information to users of our web application.

PHP: Update.
The update operation in CRUD is used to modify existing data in the database. In PHP, we can use a form similar to the one used in the create operation to display the current data and allow the user to make modifications.

Upon submission of the form, we can process the updated data using PHP and run an SQL UPDATE query to apply the changes to the database. This gives us the ability to keep the data up to date and reflect changes made by users.

PHP: Delete.
The delete operation in CRUD is used to remove data from the database. In PHP, we can use a link or a button that, when activated by the user, executes a SQL DELETE query to remove the corresponding data from the database.

It is important to be careful when implementing this functionality and consider the security of the application, as data deletion can be irreversible and potentially cause problems if not managed properly.

Publication summary.
Implementing CRUD in PHP together with databases gives us a powerful tool to manage data in web applications. By combining HTML and PHP, we can create input forms, display data, update records and delete information efficiently and safely.