Php pdo
![php pdo php pdo](http://thephpconcept.com/wp-content/uploads/2020/11/crud11-810x633.png)
To verify, simply open the terminal on Linux and Mac OS X, or the command prompt on Windows, and type the following command: If you are using PHP 5.5.X and above, chances are that your installation already includes PDO. Don’t worry about setting it up you may already have it on your system! Verifying the Existence of PDO I hope the reasons above have convinced you to start integrating PDO into your application.
PHP PDO UPGRADE
This is a great time to just upgrade straight to PDO because of how much it helps you in writing maintainable, portable code with much less effort.
![php pdo php pdo](https://image.slidesharecdn.com/phppdomyslcheatsheet-170516152901/95/php-pdo-mysl-cheat-sheet-1-638.jpg)
That means if you’re going to use PHP 7, you need to change all those functions to mysqli_* instead of mysql_*. Yes, the mysql extension is finally removed from PHP 7.
![php pdo php pdo](https://parzibyte.me/blog/wp-content/uploads/2019/10/MySQL-and-PHP-connection-using-PDO.png)
The mysql extension is no longer supported! If you would like to have this feature, but don’t want to learn an ORM, or don’t want to integrate it into an already existing application, PDO will allow you to fetch the data in your table into an object. People who have used ORMs like Doctrine know the value of being able to represent data in your tables with objects. Your application will be much safer against SQL injection.You don’t have to know, at runtime, how many placeholders you will have.Parameter binding is a feature that allows you to replace placeholders in your query with the value of a variable. Just a few parameters in the main configuration file would need changing, and you’d be done. If you were using PDO, it would be very simple. You have to do a lot of messy replaces, like converting mysql_connect or mysqli_connect to pg_connect, not to mention all the other functions you used for running queries and fetching results. All of a sudden, someone up the chain decides that you must migrate your application to use Postgres. Imagine that you have written a killer application using MySQL at your current workplace. As you will see in the rest of this article, writing object-oriented code with PDO is much simpler than you may think. Using PDO is the first step in making the database layer of your application object-oriented and reusable. This means the more you get to use objects, the better you can test your code, write reusable components, and, usually, increase your salary. In case of PHP, better PHP means object-oriented PHP. Usually, when this happens in a dynamic language, the language increases its strictness in order to allow programmers to write enterprise applications with peace of mind. Let’s face it: PHP is rapidly growing, and it is moving toward becoming a better programming language. We’ve written about this to some degree before, but let’s go through why we think it’s worth it to upgrade. The very valid question people ask when confronted by a new technology is simply, why should they upgrade? What does this new technology give them that is worth the effort of going through their entire application and converting everything to this new library, extension, or whatever? As the name implies, this extension gives you the ability to interact with your database through objects.