PHP Change Array Keys To Chars

Question

I need to change the key of the arrays to chars, something like '_1' o 'a'. Example:

Array
(
    [1] => Array
        (
            [val1] => GFA
        )
    [2] => Array
        (
            [val1] => SDF
        )
    [3] => Array
        (
            [val1] => ASD
        )
)

and I need to set like:

Array
(
    [_1] => Array
        (
            [val1] => GFA
        )
    [_2] => Array
        (
            [val1] => SDF
        )
    [_3] => Array
        (
            [val1] => ASD
        )
)

Is there any way to do that easy?

Ivo P · Accepted Answer · 2017-07-20 12:07:35Z

4

how about a loop along all elements in your array. Add a new element to it and remove the current element at that time.

foreach($yourArray as $key => $value) {
    $yourArray['_' . $key] = $value;
    unset($yourArray[$key]);
}

foreach should consider only the array-elements present at the start of this loop. Elements added in this loop should not influence the count of loop

edited Jul 20, 2017 at 12:07

answered Jul 20, 2017 at 12:02

Ivo P

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Comments

apokryfos · Accepted Answer · 2017-07-20 12:04:16Z

1

If you want a one-liner you can do:

$array = array_combine(array_map(function ($v) { return "_".$v; }, array_keys($array)),array_values($array));

answered Jul 20, 2017 at 12:04

apokryfos

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Comments

Tamim Ibrahim · Accepted Answer · 2017-07-20 16:17:14Z

0

About your problem, my approch will be like this ->

function ChangeArrayKey($arr = array()){
   $ret = array();
   foreach($arr as $key => $value ) {
      $ret['_'.$key] = $value;
   }

   return $ret;
}

// this is how you will use this function
ChangeArrayKey($arr);

answered Jul 20, 2017 at 16:17

Tamim Ibrahim

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Comments

Virb · Accepted Answer · 2017-07-20 12:05:39Z

-1

You can get it like this,

$array = array();
foreach($yourArray as $key => $val)
{
    $array["_".$key] = $val; 
}

Print your array with $array and you will get your output.

answered Jul 20, 2017 at 12:05

Virb

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