This article explains how to check the type of a variable in the Python programming language. What are Types? The type of a variable determines what it can or can’t do. It determines what value the variable may take and what can be done with that value. Using the type() Function… Read More »Checking Type in Python [Guide]
This tutorial covers limiting the number of results from a MySQL database query using the LIMIT clause and skipping results using the OFFSET clause. This is especially useful when wanting to paginate results in web applications – spreading them out over several pages by retrieving a subset of the database results.… Read More »The MySQL LIMIT and OFFSET Clauses [with Examples]
There are two things called CASE in MySQL (and, by extension, the compatible MariaDB). The CASE Operator, for use in queries. The CASE Statement, for use in stored programs and procedures. Both have similar syntax and the same purpose. Both MySQL CASE Operator and Statement provide… Read More »MySQL CASE Statement and CASE Operator – Difference and Examples
This tutorial explains how to use several methods for displaying errors in a PHP application for debugging purposes. Be Careful There are security considerations when displaying errors in any application. Be careful when and where errors are displayed – especially when building products for the… Read More »Showing Errors in PHP [Tutorial]
This article will explain how to add (or subtract) days, minutes, hours, seconds (etc.) to a JavaScript date. Why would you want to do this? Perhaps you want to tell a user that their assignment is due in a week and provide the date, or… Read More »Add Days (or Minutes, or Hours) to Javascript Date [or Subtract]
There is a lot of weird-sounding language around databases. Most of it centers on the names of the popular database software which is available. It can make it tough to choose. Each strangely named database solution offers features making it suitable for different tasks. This… Read More »MySQL vs MariaDB vs MongoDB vs PostgreSQL vs SQLite vs MS SQL – Which to Choose?
PHP frameworks speed up the development of complex applications greatly. This article features 6 of the most popular frameworks to consider in 2021. These frameworks provide varying scaffolding levels to get you started, from database operations, object handling, user authentication, and page templating. So you… Read More »6 Best PHP Frameworks to Consider in 2021
This tutorial explains how to use the shell_exec function in PHP in order to execute code via the shell and return the output as a string. PHP is a versatile programming language for building server-side web applications, but sometimes you need to execute code from another… Read More »PHP shell_exec Function: How to Use It [With Examples]
The JavaScript eval() function executes a string as JavaScript. This is a massive security risk as, if used in production, it can allow third parties to execute their own code in your app. eval() Syntax eval(string) Note that: string is a string that contains JavaScript Code eval() will return… Read More »Javascript eval() Function (and Why to NEVER Use It)
As you build more complex Python apps, you will probably want to start splitting your code into separate files. What Is the __main__ Function? Importing and executing code from another file is common in even small scripts and apps built with Python. As your library… Read More »Python Main Function & Method: What Is It and How Is It Used?
