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Functions in PHP - Objective Questions with Answers

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PHP Programming Language Interview Questions with Answers for Web Developer, Software Engineer Jobs
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(6) In PHP which language construct is used to output one or more strings?
[A] print
[B] output
[C] echo
[D] show

Comment

Answer: Option [C]
(7) In PHP which language construct is used to output only one strings?
[A] echo
[B] display
[C] print
[D] output

Comment

Answer: Option [C]

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(8) Which function is used to determine whether a variable is empty or not?
[A] check()
[B] empty()
[C] determine()
[D] fill()

Comment

Answer: Option [B]
(9) Which function is used to determine whether a variable is set or not?
[A] unset()
[B] isset()
[C] set()
[D] none of these above

Comment

Answer: Option [B]
(10) What are the differences between include() and require()?
I. require generates a fatal error and stops the script
II. include produces a warning and continues the script
III. require produces warning and continues the script
IV. include generates a fatal error and stops the script
[A] Both (I) and (II) correct
[B] Both (II) and (III) correct
[C] Both (I) and (III) correct
[D] None of these above

Comment

Answer: Option [A]

During execution of a program when it failures require generates a fatal error and stop the script. In case of include() it produces a warning and continues the script.

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