Define Variable

Question 1

What is a variable in PHP?

Answer 1

A variable in PHP is a container for storing data values

Variables are represented by a dollar sign followed by the name of the variable.

Question 2

How is a variable represented in PHP?

Answer 2

Variables are represented by a dollar sign followed by the name of the variable

Example: $username = “admin”.

Question 3

What does the scope of a variable refer to?

Answer 3

The context within which it is defined and accessible.

Question 4

What is Local Scope?

Answer 4

Variables defined within a function are local to that function and cannot be accessed outside of it

Example: function myFunction() { $localVar = “I am local”; }

Question 5

What is Global Scope?

Answer 5

Variables defined outside of any function are global and can be accessed anywhere in the script

Example: $globalVar = “I am global”;

Question 6

Fill in the blank: A _______ variable retains its value even after the function has finished executing.

Answer 6

static

Question 7

What is the behavior of a static variable in PHP?

Answer 7

A static variable retains its value even after the function has finished executing

Example: function myFunction() { static $count = 0; $count++; echo $count; }

Question 8

True or False: A local variable can be accessed outside its defining function.

Answer 8

False

Question 9

True or False: A global variable can be accessed anywhere in the script.

Answer 9

True