Check if String Starts or Ends with Substring in PHP 8.0
Checking whether a string starts or ends with a given substring are very common tasks. In versions prior to PHP 8.0, this functionality can be implemented using various string functions…
Omit Variable in Catch Block using PHP 8.0
In versions prior to PHP 8.0, in order to catch an exception we need to store it in a variable. However there can be situations when variable is not used.…
Default PDO Error Mode in PHP 8.0
PDO is a PHP extension that provides uniform way to access various databases (MySQL, PostgreSQL, etc.). PDO supports three different error modes. Error mode defines how PDO should behave on…
Check if String Contains Substring using str_contains in PHP 8.0
In versions prior to PHP 8.0, in order to check if a string contains a given substring we can use strpos function. This function returns the position of the first…
Using ::class on objects in PHP 8.0
Since PHP 5.5, we can use the special ::class constant which allows to get a fully qualified name (FQN) of the class by using ClassName::class syntax. Let's say we have…
Generate SHA-512 Hash
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…
Get List of All Environment Variables
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.…
Check if Given Year is Leap Year
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…
Install Node.js 14 and npm on Raspberry Pi
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…
Save MQTT Data to SQLite Database using Python
MQTT clients can publish messages to a MQTT broker and other clients can subscribe to message topics which they want to receive. Hovewer there might be a cases where we…