CONSTANTS

Question 0

How do you create a constant in php ?

Answer 0

Use define method. E.g. define( CONSTANT_NAME, “value”)

Question 1

Can Php constants be undefined or changed?

Answer 1

They cannot be undefined or changed.

Question 2

How do you call a constant in php?

Answer 2

By simply referring to the constant name.

Question 3

What is the difference between functions constant() and get_defined_constants() in php?

Answer 3

constant() function is used to read the constants blue if you wish to obtain the name dynamically.
get_defined_constants() gets a list of all defined name constants