Change array keys to specific strings

Question

I am looking for a way to explicitly change some array keys as they will always be the same and the array length will always be the same and then output a single key based on the lowest value. Here is where I am at:

The array code itself look like this:

$t = array($low_score_1,$low_score_2,$low_score_3,$low_score_4,$low_score_5,$low_score_6,$low_score_7,$low_score_8);

Output example:

array(8) { [0]=> string(2) "11" [1]=> string(2) "15" [2]=> string(2) "13" [3]=> string(2) "12" [4]=> string(2) "18" [5]=> string(2) "16" [6]=> string(2) "16" [7]=> string(2) "14" }

So I want to change all 8 keys to each be a specific string. So I need to change the keys and then only output the key of the lowest value in the array. I can only at the moment output the value of the lowest in the array like so:

echo min($t);

And from the array above you can see that 11 is the lowest so that is the one I want to show BUT by ke and not value...

UPDATE

I have managed to set my keys and output both the keys with their retrospective pairs but I just want to show the lowest value by its key.

        $t = array(
        'a' => $low_score_1,
        'b' => $low_score_2,
        'c' => $low_score_3,
        'd' => $low_score_4,
        'e' => $low_score_5,
        'f' => $low_score_6,
        'g' => $low_score_7,
        'h' => $low_score_8,
        );

reset($t);
while (list($key, $val) = each($t)) {
    echo "$key => $val\n";
}

The output of this looks like:

a => 11 b => 15 c => 13 d => 12 e => 18 f => 16 g => 16 h => 14

And a downvote for what reason exactly? Its very clear in what my objective is AND I have made an attempt to get to my goal but I just need some advice... admin please explore why this has been downvoted... — PhpDude
– PhpDude, Commented Jan 29, 2017 at 10:16
@OfirBaruch how do you mean sorry? Im able to find the minimum no problem what I want to do is set the keys so 0 becomes score_1, 1 becomes score_2 and then output the kay instead of the value... — PhpDude
– PhpDude, Commented Jan 29, 2017 at 10:18

Ofir Baruch · Accepted Answer · 2017-01-29 10:56:21Z

1

As mentioned it's a simple 'find minimum' problem. Only that you want to save the key of the minimum value.

        $t = array($low_score_1,$low_score_2,$low_score_3,$low_score_4,$low_score_5,$low_score_6,$low_score_7,$low_score_8);

  //Setting new keys        
$t2 = array();
    foreach($t as $key => $val){
     $key2 = 'score_' . ($key+1);
     $t2[$key2] = $val;
    }

//Finding the minimum
$min = $t2['score_1'];
$min_key = 0;

    foreach($t2 as $key => $val){
      if($val < $min){
        $min = $val;
        $min_key = $key;
     }
    }
        //output
        print_r($t2);
        echo $min; // the min value
        echo $min_key; // the key of the min value

edited Jan 29, 2017 at 10:56

answered Jan 29, 2017 at 10:19

Ofir Baruch

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8 Comments

PhpDude Over a year ago

I want to change the keys to specific string names, then just output the lowest value from the array but by its key and not by value.

Ofir Baruch Over a year ago

Just a sec, checking something

Ofir Baruch Over a year ago

fixed the code. Test the new code. $min_key will hold the key for the minimum value's key.

PhpDude Over a year ago

I need to set all 8 keys manually, At the moment your code is just settings the key to 0. So there will only ever be 8 in the array so key 0 needs to become the string 'score_1' etc

Ofir Baruch Over a year ago

I don't understand your comment. Please edit your question and elaborate about it. What is the full desired output that you're looking for?

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