Access several arrays and change their keys - php

Question

I have got several or an amount of arrays which cannot be foreseen.
I want to access them und change their keys. I guess with a loop.
Array
(
[count] => 1
[0] => Max, Mustermann
[1] => Job
[2] => Companyname
[3] => IT
[4] => CEO
[5] => N610-611
[6] => [phone]
[7] => [phone]
[8] => max#company.de
)
Array
(
[count] => 1
[0] => Alicia Keys
[1] => Job
[2] => Companyname
[3] => IT
[4] => CEO
[5] => N610-N611
[6] => +49 11111
[7] => +49 11111
[8] => alikey#company.de
)
I'd like to have an output like this:
Array
(
[count] => 1
[Name] => Max, Mustermann
[Jobname] => Job
[Company] => Companyname
[Division] => IT
[CEO] => CEO
[Room] => N610-611
[Tel] => [phone]
[Fax] => [phone]
[E-Mail] => max#company.de
)
Array
(
[count] => 1
[Name] => Alicia Keys
[Job] => Job
[Company] => Companyname
[Division] => IT
[CEO] => CEO
[Room] => N610-N611
[Tel] => +49 11111
[Fax] => +49 11111
[E-Mail] => alikey#company.de
)
I'm not sure whether to use a foreach oder a for loop, or if a loop is even necessary. I know that changing keys is not that simple and read of a second array which holds the keys you want to change to. But I'm not sure how to do that

Answer 1

You can use array_combine() along with foreach() with predefined keys arrays
//predefined keys array
$index_array = array('count','Name','Jobname','Company','Division','CEO','Room','Tel','Fax','E-Mail');
foreach($array as &$value){
$value = array_combine($index_array ,$value);
}
Output:-https://3v4l.org/VnmWJ
Note:- If your array is single-dimensional then:
$array = array_combine($index_array ,$array);
Output:-https://3v4l.org/R8oY0
Explanation:-
foreach() because it take care about indexes as well as more readable. (save you from undefined index error happen multiple times using for() loop)
&$valueis passing by reference, so that any change in child array will reflect in the original/initial array automatically.

Answer 2

If you have a 1D array and you want to change keys of this array. It's enough to define an array with new keys and change keys of array in a loop. I make a example in following snippets code:
<?php $arr = [
'count' => 1,
'0' => 'Max Mustermann',
'1' => 'Job',
'2' => 'Companyname',
'3' => 'IT',
'4' => 'CEO',
'5' => 'N610-611',
'6' => '[phone]',
'7' => '[phone]',
'8' => 'max#company.de',
];
$arr2 = ['count', 'Name', 'Jobname', 'Company', 'Division', 'CEO', 'Room', 'Tel', 'Fax', 'E-Mail'];
$index = 0;
foreach($arr as $oldkey => $value) {
$arr[$arr2[$index]] = $arr[$oldkey];
unset($arr[$oldkey]);
$index++;
}
print_r($arr);
you can see output in this link