Beginner
PHP
Q8 / 100
What does isset() do?
Correct! Well done.
Incorrect.
The correct answer is B) Checks if a variable is set and is not null
B
Correct Answer
Checks if a variable is set and is not null
Explanation
isset($var) returns true if $var is declared and not null. It returns false for null values and undefined variables.
Progress
8/100