I have two array as shown below:

$arr1 = ['monday','tuesday'];
$arr2 = [['1:00','3:00'],['12:00',4:00]];

I will like to make monday in $arr1 the key of the first array in $arr2. SO my final result will be:

"monday" => ['1:00','3:00'],
"tuesday" => ['1:00','3:00'],

Thanks in advance.

CodePudding user response：

Here is a simple solution that will populate the $result array with the required data:

$arr1 = ['monday','tuesday'];
$arr2 = [['1:00','3:00'],['12:00', '4:00']];
$result = [];

foreach ($arr1 as $index => $day) {
    $result[$day] = $arr2[$index]; 
}

print_r($result);

CodePudding user response：

Use array_combine:

$arr3 = array_combine($arr1, $arr2);

It does exactly what you want to achieve.

CodePudding user response：

Or for larger data this should be faster:

$arr1 = ['monday','tuesday'];
$arr2 = [['1:00','3:00'],['12:00','4:00']];
$desired_output  = array_map(
    static function($key, $val) use ($arr2)
    {
        $new[$val] = $arr2[$key];
        return $new;
    },
    array_keys($arr1), $arr1
);
var_dump($desired_output);