Laravel does not get the temppath when upload bigger files - php

Question

I need to handle a file in a Laravel controller,
TL;DR
How to handle big files through laravel requests?
When I make the request with the small file, its tempPath is normal: /tmp/php3Hijl5
But when I make a request for a large file it comes: /home/p.../public
This can happen because php defines a maximum size in php.ini called upload_max_filesize.
Trying to solve this problem, I'm setting the project to a larger upload_max_filesize:
ini_set('upload_max_filesize', '50M');
But this thing is not reflecting in the project, because when I give ini_get('upload_max_filesize');
it returns a '2M'.
When I try to handle the file with fgetcsv() it says that this tempPath is a directory.
Im using dd() to check the file tempPath.
Controller.php
public function assignToClients(Request $request, $id)
{
$file = $request->file('csv_joining_clients');
if (!$file) {
return response([
'message' => 'You have to upload a CSV file'
], 400);
}
$array = $this->parseCsvToString($file);
dd($array);
}
private function parseCsvToString($file)
{
$i = 0;
$importData_arr = [];
$tempPath = $file->getRealPath();
dd($tempPath);
$file = fopen($tempPath, 'r');
while (($filedata = fgetcsv($file, 10000, ",")) !== false) {
$num = count($filedata);
for ($c = 0; $c < $num; $c++) {
$importData_arr[$i][] = $filedata[$c];
}
$i++;
}
fclose($file);
return $importData_arr;
}