Saturday, July 11, 2009

With DOM (document object model), we can add or remove a node in xml with DOM. DOM comes up with many powerful features. Let see the question now for preparation of ZEND certification test. The bold options are the answers. You can give your opinion about the answers.
Question: What should go in the missing line ????? below to produce the output shown?

$array_one = array(1,2,3,4,5);
$array_two = array('A', 'B', 'C', 'D', 'E');

???????

print_r($array_three);

Result:

Array
(
[5] => A
[4] => B
[3] => C
[2] => D
[1] => E
)

a. $array_three = array_merge(array_reverse($array_one), $array_two);
b. $array_three = array_combine($array_one, $array_two);
c. $array_three = array_combine(array_reverse($array_one), $array_two);
This is the right answer.The array_combine function takes 2 arguments. One is keys and other is values. If the length of the arrays are not match or the array is empty , then E_WARNING is thrown.

d. $array_three = array_merge(array_reverse($array_one), $array_two);
e. $array_three = array_combine($array_one, $array_two);




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3 comments:

aflavio said...

You are wrong:

The write answer is:

d. $array_three = array_merge(array_reverse($array_one), $array_two);

aflavio said...

sorry me falt.

the right answer is C!


$array_three = array_combine(array_reverse($array_one), $array_two);

tahsin said...

yah, u r right.thanks.