Singly quoted strings are treated almost literally, whereas doubly quoted strings replace variables with their values as well as

A string is a data type used to represent text. It is a set of characters that can also

Variable scope is known as its boundary within which it can be visible or accessed from code. In other

There is no need to write a dollar sign ($) before a constant, where as in variable one has

To define a constant you have to use define() function and to retrieve the value of a constant, you have to

Built-in datatypes in PHP: Integer - whole numbers String - alphanumeric text Float - decimal point numbers(also called double) Boolean - represents logical

Both, PHP is compiled down to an intermediate bytecode that is then interpreted by the runtime engine. PHP compiler is

Composer is an application-level package manager for the PHP applications that provides a standard system for managing dependencies of

In PHP, variable names are case-sensitive but function names are not case sensitive. If we define function name in

PHP or Hypertext Pre-processor is a general purpose programming language written in C and used by developers to create