PHP FUNCTIONS QUIZ

. . . . . converts the keys of an array into values and the values into keys.

array_trans()

array_flips()

array_transpose()

array_flip()

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following PHP functions can be used for generating unique id’s?

uniqueid()

md5()

id()

mdid()

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It is always necessary to use parentheses with the print function.

True

False

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What will be the output of the following PHP code ? $x = 75; $y = 25; function addition() { $GLOBALS['z'] = $GLOBALS['x'] + $GLOBALS['y']; } addition(); echo $z;

error

25

75

100

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What will be the output of the following PHP code ? function mine($num) { $num = 2 + $num; echo $num; } mine(3);

$num

None of the mentioned

3

5

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What will be the output of the following PHP code? function a() { function b() { echo 'I am b'; } echo 'I am a'; } b(); a();

I am a Error

Error

I am bI am a

I am b

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strlen() returns the length of the string on success and . . . . if the string is empty.

NULL

0

-1

Garbage value

TRUE ANSWER : ?
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The arguments in a function are evaluated from .....

sometimes left to right and sometimes right to left

left to right

right to left

Always right to left

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What will be the output of the following PHP code ? function start($string) { if ($string < 45) return 20; else return 40; } $t = start(90); if ($t < 20) { echo "Have a good day!"; } else { echo "Have a good night!";}

Have a good day!

ERROR

Have a good night!

None of the mentioned

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What will be the output of the following PHP code? function sum($num1, $num2) { $total = $num1 + $num2; echo "cos($total)"; } sum(5,-5);

1

0

-0.5

0.5

TRUE ANSWER : ?
YOUR ANSWER : ?

. . . . . converts the keys of an array into values and the values into keys.

Which of the following PHP functions can be used for generating unique id’s?

It is always necessary to use parentheses with the print function.

What will be the output of the following PHP code ?<br/>$x = 75;<br/>$y = 25;<br/>function addition()<br/>{<br/>$GLOBALS['z'] = $GLOBALS['x'] + $GLOBALS['y'];<br/>}<br/>addition();<br/>echo $z;

What will be the output of the following PHP code ?<br/>function mine($num)<br/>{<br/>$num = 2 + $num;<br/>echo $num;<br/>}<br/>mine(3);

What will be the output of the following PHP code?<br/>function a() {<br/>function b() {<br/>echo 'I am b';<br/>}<br/>echo 'I am a';<br/>}<br/>b();<br/>a();

strlen() returns the length of the string on success and . . . . if the string is empty.

The arguments in a function are evaluated from .....

What will be the output of the following PHP code ?<br/>function start($string)<br/>{<br/>if ($string < 45)<br/>return 20;<br/>else<br/>return 40;<br/>}<br/>$t = start(90);<br/>if ($t < 20)<br/>{<br/>echo "Have a good day!";<br/>}<br/>else<br/>{<br/>echo "Have a good night!";}

What will be the output of the following PHP code?<br/>function sum($num1, $num2) {<br/>$total = $num1 + $num2;<br/>echo "cos($total)";<br/>}<br/>sum(5,-5);