Interview Questions on PHP

PHP data types are used to hold different types of data or values. There are 8 primitive data types which are further categorized in 3 types: Scalar types Compound types Special types In PHP, there are several data types that can be used to store different types of values. Here’s a list of the common … Read more

PHP magic constants are predefined constants, which change based on their use. They start with a double underscore (__) and end with a double underscore (__). In PHP, magic constants are special predefined constants that change based on their usage context. These constants are prefixed and suffixed with double underscores. Here are some examples of … Read more

PHP constants are name or identifier that can’t be changed during execution of the script. PHP constants are defined in two ways: Using define() function Using const() function In PHP, there are two primary ways to define constants: Using the define() function: This function allows you to define a constant with a specified name and … Read more

$message stores variable data while $$message is used to store variable of variables. $message stores fixed data whereas the data stored in $$message may be changed dynamically. In PHP, the difference between $message and $$message lies in the way variables are referenced. $message: This is a regular variable. It holds the value assigned to it … Read more

A PHP variable is the name of the memory location that holds data. It is temporary storage. Syntax: $variableName=value; In PHP, variables are declared using the following syntax: phpCopy code $variableName = value; Here’s a breakdown of this syntax: $ sign: It is used to declare variables in PHP. It precedes the name of the … Read more