What is PHP, Python and Javascript and how to write a "Hello World" code with each language?

Summary 1 - How to write HELLO WORLD code in PHP, Python and JavaScript? 2 - What is PHP language? 3 - What is Python language? 4 - What is JavaScript language? Introduction When it comes to web development, there are a wide variety of programming languages available, each with their own strengths and weaknesses. Three of the most popular programming languages for web development are PHP, Python, and JavaScript. PHP is a server-side scripting language that was originally designed for web development but has since been used for a wide variety of other applications as well. It is known for its ease of use and its ability to handle large volumes of traffic. Python, on the other hand, is a general-purpose programming language that is often used for web development, data analysis, machine learning, and other applications. It is known for its simplicity and ease of use, as well as its versatility and wide range of libraries and frameworks. JavaScript, meanwhile, is a clie...