Echo value of array

Question

I searched, but the other threads don't answer my question, or I am just too stupid to see it.

$Questions = array(
1 => array(
    'Question' => 'Second question',
    'Answers' => array(
        'A' => 'First answer of Second question',
        'B' => 'Second answer Second question',
        'C' => 'Third answer Second question'
    ),
    'CorrectAnswer' => 'C'
)
);

How do I echo the value of 'CorrectAnswer'? Actually, I mean the value of 'C' (In this case, it would be "Third answer Second question"). $Value['CorrectAnswer'] gives me "C". But I can't just echo 'C', because in each array the correct answer is different. I am sure it's something really simple, but it escapes me. Sorry if I am not explaining it properly. This is the other piece of code:

foreach ($Questions as $QuestionNo => $Value)
{
    if ($Answers[$QuestionNo] != $Value['CorrectAnswer'])
{
        echo 'Your answer: <span style="color: red;">'.$Value['Answers'][$Answers[$QuestionNo]].'</span><br />
Correct answer: <span style="color: green;">'.$Value['CorrectAnswer'].'</span>';                        
    } 
}

It's a bad practice to name your variables with first letter capitalized. Usually class names get first letter capital. But still, that's your choice :) — Whirlwind
– Whirlwind, Commented Jan 30, 2015 at 15:19

Mike Brant · Accepted Answer · 2015-01-30 15:32:27Z

You would use the value for CorrectAnswer as lookup key against Answers:

echo $Questions[1]['Answers'][$Questions[1]['CorrectAnswer']];

Or in context of your code example, which is looping through $Questions array:

foreach ($Questions as $questionNo => $value) {
    $answerGiven = $answers[$questionNo];
    $correctAnswer = $value['Answers'][$value['CorrectAnswer']];
    if ($answerGiven !== $correctAnswer) {
        echo 'Your answer: <span style="color: red;">' . $answerGiven . '</span>';
        echo '<br />';
        echo 'Correct answer: <span style="color: green;">' . $correctAnswer . '</span>';
    } 
}

Note that I have cleaned up the code to make it much more readable. You set the answer given and correct answer to variables and then use these for decision making and output. I also indented code properly to make it more readable.

I would caution you against using initial caps for variable naming (or associative array key naming) in PHP as this is VERY non-standard.

Spencer Wieczorek · Accepted Answer · 2015-01-30 15:19:37Z

1

The value of $Value['CorrectAnswer'] would be "C", so you can use it like so:

echo $Value['Answers'][$Value['CorrectAnswer']];

answered Jan 30, 2015 at 15:19

Spencer Wieczorek

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2 Comments

Kard Nails Over a year ago

Thank you, that's it. So what it does is use the value of 'CorrectAnswer' as the position of the array 'Answers' which to echo?

Spencer Wieczorek Over a year ago

@KardNails Yes, it would be as if you said: $Value['Answers']['C'];

PKeidel · Accepted Answer · 2015-01-30 15:20:01Z

1

Are you looking for something like

echo 'Correct answer: <span style="color: green;">'.$Value['Answers'][$Value['CorrectAnswer']].'</span>';

answered Jan 30, 2015 at 15:20

PKeidel

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Comments

Bethany Seeger · Accepted Answer · 2015-01-30 15:31:22Z

1

Are you asking for this:

$Value['Answers'][$Value['CorrectAnswer']]

This should give you: 'Third answer Second question'

(well, only in the case where $Value references the 1st array in the $Questions array, that is.)

edited Jan 30, 2015 at 15:31

answered Jan 30, 2015 at 15:26

Bethany Seeger

766 bronze badges

4 Comments

Spencer Wieczorek Over a year ago

It should be $Value, not $value. Also didn't I already give this as an answer?

Bethany Seeger Over a year ago

Well, that's the asynchronous internet for you! We answered at the same time. And you're correct, it should be $Value. I'll fix it.

Bethany Seeger Over a year ago

Actually, about the async stuff. You're posted at about 6 minutes before me, so yes, it is repeat. However, I didn't see your post before I posted, due to refresh, I'm sure. Else I wouldn't have posted a repeat answer.

Spencer Wieczorek Over a year ago

It's fine, I know you didn't copy me. I sometimes spend some time on an answer to just find out it was already posted.

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