Which of following variables can be assigned a value to it?
i. $3hello
ii. $_hello
iii. $this
iv. $This
A)All of the above
B)Only ii)
C)ii), iii) and iv)
D)ii) and iv)

Question

Quizplus · Accepted Answer

In most programming languages, variable names cannot start with a number, so $3hello is invalid. The variable $_hello is valid as it starts with an underscore. $this is often a reserved keyword in object-oriented programming languages like PHP, so it cannot be used as a variable name. $This is valid as it starts with a letter and is not a reserved keyword.

Which of Following Variables Can Be Assigned a Value to It