push for loop result as array laravel

I know this easy but I still can't solve it, I have this piece of code :

$names = [
    '1' => 'name1',
    '2' => 'name2',
    '3' => 'name3',
];  

It's simple for small number array, but how if i get many data and always change?, I plan to use for loop

$totaldata = 5    

for($z=1; $z<=$totaldata; $z++) {
    $yz = name.$z;

    $names = [
        $z => $yz,
    ];
}

but somehow it doesn't work, any solution?

via Chebli Mohamed