Replace array keys using an array of values

Question

I'm currently working with a CSV file that I am converting into an array. However, I would like for my array keys to be the values of the first row. I'm looking for an easy way to get this done.

$newArray = [];
$handle = fopen($file, "r");
$firstRow = fgetcsv($handle, 5000, ",");
while (false !== ($row = fgetcsv($handle, 5000, ','))) {
    $newArray[] = $row;
}

Now, $row will have numeric array keys as is usual with arrays. However, I would like $firstRow to replace those keys. Can someone help me out?

Update

As requested, some example data.

"name","age","active","date_added"
"John Doe","24","yes","2018-01-02"
"Jane Doe","41","yes","2018-01-03"
"Joe Doe","28","yes","2018-01-04"
"Janett Doe","30","no","2018-01-05"

Currently, var_dump($row) will output:

array(4) {
    [0]=> "John Doe"
    [1]=> "24"
    [2]=> "yes"
    [3]=> "2018-01-02"
}

The expected result:

array(4) {
    ['name']=> "John Doe"
    ['age']=> "24"
    ['active']=> "yes"
    ['date_added']=> "2018-01-02"
}

Answer 1

Simply with array_combine() function:

...
$newArray[] = array_combine($firstRow, $row);
...

http://php.net/manual/en/function.array-combine.php