Avoid sql injection in PHP with PDO class
If we develop complex web applications, or at least with a constant use of database queries, we must be concerned about the security of our information, and therefore ensure the…
How to connect php with mysql
Reading databases is easy, you must have at least basic notions of SQL to start extracting the information stored in your tables. The execution of queries with PDO always follows…
#1 PHP Variables Creation and USE
In this first class of the series of the course to learn php I will try to explain the operation and usefulness of the use of variables in programming and…
Simplify PDO connection to Mysql with a PHP class
In this tutorial I am going to encapsulate the functionality of the PDO class in a php class of my own. Why am I doing this? Well, to make my…
Redirect domain without WWW with htaccess
There is a common problem that arises when we acquire our domains: duplicate content is easy to appear and it is a problem if we want to position ourselves properly…
#2 Arithmetic operations with PHP variables
With this second part of the php course, I am going to explain the main arithmetic operations available from php. In this tutorial I will use, for greater clarity, basic…
What is and how does a 404 error page work?
It is important to anticipate all possible mistakes that will arise when browsing our websites over time: broken links, programming errors, failure to connect to the database... To correct most…
#3 Control structures, what they are and types
In the third installment of the php course I am going to address the control structures, I will answer the questions: What are they? How are they used? What types…
How to combine PHP and HTML
For those who are not clear about it, or who want to see the different ways that exist, we are going to see with this tutorial how to combine php…
#3.1 IF and ELSE PHP with examples
The conditionals they are the most basic form of control structures. They are a simple but powerful tool that will bring us closer to the realization of complex scripts. In…
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