php key name change issue in associative array

Question

I'm trying to change the keynames of the keys in my arraylist. Say, I have an array like the one below. I want to change "n" to "name" and "l" to "surname"

Array
(
    [0] => Array
        (
            [n] => Amy
            [l] => Gonzalez
        )

    [1] => Array
        (
            [n] => Jeff
            [l] => Garcia
        )

)

This is my code. $data is where the array is stored and I get it dynamically.

$newkey = array('n'=>'name','l'=>'surname');
$count = count($data);
        $i=0;
        if($i<=$count){
            foreach( $data as &$item )
            {
                foreach( $newkey as $key => $replace )
                {
                    if (key_exists($key,$item))
                    {
                        $item[$replace] = $item[$key];
                        unset($item[$key]); 
                    }
                }
            }
            $i++;
        }

This works for the last entry only. What am I doing wrong? My array may sometimes fetch several results, not only 2.

What are the variables $i and $count doing? Can you remove those and leave just the foreach? — Halcyon
– Halcyon, Commented Mar 3, 2014 at 15:23
Initially I didn't but as the code worked only for the last entry, that is why I introduced those variables — user2509780
– user2509780, Commented Mar 3, 2014 at 15:24
@user2509780: Please add the expected output to the question. — Amal
– Amal, Commented Mar 3, 2014 at 15:25

AbraCadaver · Accepted Answer · 2014-03-03 15:28:18Z

0

Try something like this:

foreach($data as &$array) {
    $array = array_combine(
        str_replace(array_keys($newkey), $newkey, array_keys($array)), $array);
}

answered Mar 3, 2014 at 15:28

AbraCadaver

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Comments

Halcyon · Accepted Answer · 2014-03-03 15:26:59Z

-1

Not an answer persee but I need some space to post code

I'm not sure what is wrong because this code works:

$data = array(
    array(
        "n" => "a",
        "l" => "b"
    ),
    array(
        "n" => "a",
        "l" => "b"
    )
);
$newkey = array('n'=>'name','l'=>'surname');
foreach( $data as &$item )
{
    foreach( $newkey as $key => $replace )
    {
        if (key_exists($key,$item))
        {
            $item[$replace] = $item[$key];
            unset($item[$key]); 
        }
    }
}
var_dump($data);

Output:

array(2) { [0]=> array(2) { ["name"]=> string(1) "a" ["surname"]=> string(1) "b" } [1]=> &array(2) { ["name"]=> string(1) "a" ["surname"]=> string(1) "b" } }

answered Mar 3, 2014 at 15:26

Halcyon

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7 Comments

Amal Over a year ago

Not having enough space to post code is not a valid reason to post it as an answer.

Amal Over a year ago

See this Meta question: Are “works for me” answers valid?

Halcyon Over a year ago

@AmalMurali This is a reproducible test case. How would you suggest I post this code? Edit the original question? Seems a bit destructive to me. If you read the discussion you link you will see there are additional opinions, more practical and inline with my post.

Amal Over a year ago

@FritsvanCampen: Who said anything about editing the question? This is the same code the OP had in the question (unless I'm missing something). You could have added a demo in eval.in and linked it in the comments. Anyway, this is a bit off-topic here, so if you want to discuss it further, please feel free to open a Meta discussion about it.

Shankar Narayana Damodaran Over a year ago

@FritsvanCampen, You don't the have right to use such swear word. Flagged your comment as Rude / Offensive

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