Functions in PHP - Objective Questions with Answers

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Questions
6 In PHP which language construct is used to output one or more strings?
A print
B output
C echo
D show

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

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()

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

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

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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