PDO is a PHP extension that provides a uniform way to access various databases (MySQL, PostgreSQL, etc.). PDO supports three different error modes. Error mode defines how PDO should behave...
Monthly Archives: November 2020
In versions prior to PHP 8.0, in order to check if a string contains a given substring, we can use the strpos function. This function returns the position of the...
Since PHP 5.5, we can use the special ::class constant which allows getting a fully qualified name (FQN) of the class by using ClassName::class syntax.
Let's say we have a...
SHA-512 is a cryptographic hash function that accepts a string of any length and returns a 512-bit fixed-length digest value, commonly represented as a sequence of 128 hexadecimal digits. SHA-512...
Environment variable is a named value on a computer that can be used to affect running processes. Programming languages provides methods to get a list of all the environment variables...
A leap year is a year that contains an additional day (February 29). A leap year has 366 days instead of the 365 days. It occurs every four years. Programming...
Node.js is an open-source runtime environment that allows to run JavaScript code on the server without a browser. It is based on Chrome's V8 JavaScript engine. Node.js is commonly used...
MQTT clients can publish messages to a MQTT broker, and other clients can subscribe to message topics which they want to receive. However, there might be a case where we...
Git is an open-source version control system that is used track a file changes. Git is commonly used by developers during software development.
This tutorial shows how to install Git...
Java is a programming language that is used in various applications and systems. OpenJDK and Oracle JDK are two implementations of the Java based on same specification. The main difference...