PHP security Questions creation ? { Random Arrays }

Hello,
I have no idea how to pick a random key from an array with it's value

I want to create a very simple security system to prevent spam by asking users simple questions such as "Fire is Hot or Cold" might Be hard but hey life is not fair

Anyway i am really stuck at how to do this I've used array_rand and managed to get a random question out of my array :

<?php 
$questions_array = array('Fire is hot or cold' => 'hot', 'The moon is red or white' => 'white',....ETC); 
$rand_question = array_rand($questions_array);
?>

Code (markup):

But I am unable to get the answer along with the random question, Any Suggestions ?

Thanks in advance,
Kind Regards,
Issa Shamoun

 

maby try this;

$random_array_key = array_rand($your_array);
$random_array_value = $your_array[$random_array_key];

Code (markup):

 

<?php 

$questions_array = array('Fire is hot or cold' => 'hot', 'The moon is red or white' => 'white');

$random_array_key = array_rand($questions_array);
$random_array_value = $questions_array[$random_array_key];

echo $random_array_key. ' => ' . $random_array_value;

?>

PHP:

Just putting what EricBruggema put but making it output for you.

 

Thank you ! got it working perfectly !!