Functions in PHP MCQ - Quiz

Q: Which one of the following function is capable of reading a specific number of characters form a file?

A. fgets()
B. fget()
C. fileget()
D. filegets()

Correct Option: A
Explanation: Its prototype is string fgets(resource handle [, int length]). If the optional length parameter is omitted, 1024 character is assumed.

Q: Which of the following are valid function names?
i) function()

ii) €()

iii) .function()

iv) $function()

A. Only (ii)
B. None of the mentioned.
C. All of the mentioned.
D. (iii) and (iv)

Correct Option: A
Explanation: Except a) others are invalid names. According to the specified regular expression ([a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*), a function name like this one is valid.

Q: Which one of the following function outputs the contents of a string variable to the specified resource?

A. filewrite()
B. fwrite()
C. filewrites()
D. fwrites()

Correct Option: B
Explanation: fwrite()

Q: Which one of the following PHP functions can be used to find files?

A. glob()
B. file()
C. fold()
D. get_file()

Correct Option: A
Explanation: glob()

Q: What will be the output of the following PHP code?

< ?php 
    function calc($price, $tax="")
    {
        $total = $price + ($price * $tax);
        echo "$total"; 
    }
    calc(42);	
?>

A. Error
B. 0
C. 42
D. 84

Correct Option: C
Explanation: You can designate certain arguments as optional by placing them at the end of the list and assigning them a default value of nothing.

Q: Which one of the following PHP function is used to determine a file

A. fileltime()
B. filectime()
C. fileatime()
D. filetime()

Correct Option: C
Explanation: The fileatime() function returns a file’s last access time in Unix timestamp format or FALSE on error.

Q: Which one of the following function reads a directory into an Array?

A. scandir()
B. readdir()
C. scandirectory()
D. readdirectory()

Correct Option: A
Explanation: It returns an array consisting of files and directories found in directory or returns FALSE on error.

Q: What will be the output of the following PHP code?

< ?php 
    $str = "Hello World"
    echo wordwrap($str,5,"
\n");    
?>

A. Hello World
B. Hello
World
C.
Hell

o wo

rld
D. World

Correct Option: B
Explanation: Hello
World

Q: What will be the output of the following PHP code?

< ?php 
    echo ord ("hi");
?>

A. 106
B. 103
C. 104
D. 209

Correct Option: C
Explanation: The ord() function returns the ASCII value of the first character of a string. The ASCII value of h is 104, thus 104 was displayed.

Q: What will be the output of the following PHP code?

< ?php 
    echo ucwords("i love my country");
?>

A. I love my country
B. i love my Country
C. I love my Country
D. I Love My Country

Correct Option: D
Explanation: The ucwords() function converts the first character of each word in a string to uppercase.

Functions in PHP MCQ - Quiz

Which one of the following function is capable of reading a specific number of characters form a file?

Which of the following are valid function names?
i) function()

ii) €()

iii) .function()

iv) $function()

Which one of the following function outputs the contents of a string variable to the specified resource?

Which one of the following PHP functions can be used to find files?

What will be the output of the following PHP code?
< ?php function calc($price, $tax="") { $total = $price + ($price * $tax); echo "$total"; } calc(42); ?>

Which one of the following PHP function is used to determine a file

Which one of the following function reads a directory into an Array?

What will be the output of the following PHP code?
< ?php $str = "Hello World" echo wordwrap($str,5," \n"); ?>

What will be the output of the following PHP code?
< ?php echo ord ("hi"); ?>

What will be the output of the following PHP code?
< ?php echo ucwords("i love my country"); ?>

Functions in PHP MCQ - Quiz

Which one of the following function is capable of reading a specific number of characters form a file?

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

Which one of the following function outputs the contents of a string variable to the specified resource?

Which one of the following PHP functions can be used to find files?

What will be the output of the following PHP code? < ?php function calc($price, $tax="") { $total = $price + ($price * $tax); echo "$total"; } calc(42); ?>

Which one of the following PHP function is used to determine a file

Which one of the following function reads a directory into an Array?

What will be the output of the following PHP code? < ?php $str = "Hello World" echo wordwrap($str,5," \n"); ?>

What will be the output of the following PHP code? < ?php echo ord ("hi"); ?>

What will be the output of the following PHP code? < ?php echo ucwords("i love my country"); ?>

Which of the following are valid function names?
i) function()

ii) €()

iii) .function()

iv) $function()

What will be the output of the following PHP code?
< ?php function calc($price, $tax="") { $total = $price + ($price * $tax); echo "$total"; } calc(42); ?>

What will be the output of the following PHP code?
< ?php $str = "Hello World" echo wordwrap($str,5," \n"); ?>

What will be the output of the following PHP code?
< ?php echo ord ("hi"); ?>

What will be the output of the following PHP code?
< ?php echo ucwords("i love my country"); ?>