Which function is used to verify whether a variable contains a value?
A. header()
B. footer()
C. inset()
D. isset()
Answer: Option D
Solution(By Examveda Team)
The isset() function determines whether a variable has been assigned a value. Its prototype follows: boolean isset(mixed var [,mixed var [,…]]).Related Questions on HTML Forms Handling
Which two predefined variables are used to retrieve information from forms?
A. $GET & $POST
B. $_GET & $_POST
C. $__GET & $__POST
D. GET & POST
A. basic sql injection
B. advanced sql injection
C. cross-site scripting
D. scripting
When you use the $_GET variable to collect data, the data is visible to.
A. none
B. only you
C. everyone
D. selected few
When you use the $_POST variable to collect data, the data is visible to.
A. none
B. only you
C. everyone
D. selected few
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