Php programming language MCQ : Function and String : Link1

Php programming language MCQ : Function and String : Link1

Function and String MCQ

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Q.1. Which of the following are valid function names?
i) function()
ii) abc()
iii) .function()
iv) $function()

A. Only i)                                                              B. Only ii)
C. i) and ii)                                                        D. iii) and iv)

Q.2. What will be the output of the following PHP code?

<?php \\ \:\:\:\:function\:\:\: x() \\ \{ \\ function \:\:\: y() \\ \{ \\ echo\:\: ' I\:\: am\:\: x\:'; \\ \} \\ echo \:\:'I \:\:am\:\: y\:';\\ \:\:\: \} \\ x();\\ x();\\ ?>













A. I am x                                             B. I am yI am x
C. Error                                           D. I am x Error

Q.3. How to define a function in PHP?

A. function {function body}
B. functionName(parameters) {function body}
C. function functionName(parameters) {function body}
D. data type functionName(parameters) {function body}

Q.4. What will be the output of the following PHP code?

<?php \\ \:\:\:\:function\:\:\: x() \\ \{ \\ function \:\:\: y() \\ \{ \\ echo\:\: ' I\:\: am\:\: x\:'; \\ \} \\ echo \:\:'I \:\:am\:\: y\:';\\ \:\:\: \} \\ y();\\ x();\\ ?>












A. I am x                                      B. I am yI am x
C. Error                                       D. I am x Error

Q.5. What will be the output of the following PHP code?

<?php \\ \:\:\:\:$option2 = "\:bye\:" \\ function \:\:foo() \\ \{ \\ function \:\: foo($option1) \\ \{ \\ echo\:\:$option1; \\ echo\:\:$option2; \\ \} \\ foo("hello");\\ ?>












A.hellobye                                              B. hello
C. Error                                               D. hellobyebye

Q.6. How many types of functions are available in php?

A. 5                                                              B. 3
C. 2                                                                               D. 4

Q.7. Which of the following is not a built-in function in php ?

A. fopen()                                                                          B. print_r()
C. gettype()                                                                       D. fclosed()

Q.8. Why should we use functions?

A. Reusability
B. Easier error detection
C. Easily maintained
D. All of the above

Q.9. A function name always begins with the keyword -------

A. fun                                                  B. def
C. function                                                  D. None of the above

Q.10. A function name cannot start with a -----.

A. alphabet                                                                                B. underscore
C. number                                                                             D. Both C and B