Which of the following language constructs is used to check if a form variable has not been sent or does not contain data?
Reveal answer
Fill a bubble to check yourself
Keep practicing — related questions
- Which of the following methods determines whether a certain variable has been already declared by PHP?
- Which of the following variables is not a predefined variable?
- Which of the following is/are correct?
- 6. Which of the following variables is not a predefined variable?
- which one of the below is not a null handling function
- Which one of the following syntactic constructs is not a simple expression?
- Which of the following HTTP method should be used to accept form data?
- Do Form Post and Post Back differ from each other?