is laravel handle race condition

Today I wrote 2 of the same codes in laravel and simple PHP without a framework to check race conditions. In simple PHP code, race condition happens when I send requests concurrently by the Jmeter tool but in the same scenario, laravel has no race condition problem.

I want to ensure that. Is laravel handling race conditions on its own?

this is simple PHP:

 
<?php

if(empty($_GET['name'])){
    exit('name is required');
}

try {
    $conn = new PDO("mysql:host=localhost;dbname=databasename", 'user', 'pass');
    $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

    $stmt = $conn->prepare("INSERT INTO users (name, email, password) VALUES (?,?,?)");


    $numRowsStmt = $conn->prepare("Select * from users where name = ?");
    $numRowsStmt->execute([$_GET['name']]);

    $numRows = $numRowsStmt->rowCount();


    if($numRows <= 0){





        $name = $_GET['name'];
        $email = rand(100,50000) . '@gmail.com';
        $pass = 'password';

        $stmt->execute([$name,$email,$pass]);

        exit('user created');
    }

    exit('user exists');

} catch(PDOException $e) {

    echo $e->getMessage();
}

this is laravel:

Route::get('/100/{name}', function (Request $request, $name) {


    $r = Validator::make(compact('name'), ['name' => 'unique:users,name']);

    if ($r->fails()) {
        exit('its exist');
    };


    User::create(['name' => $request->name, 'email' => rand(100, 80000) . '[email protected]', 'password' => IlluminateSupportFacadesHash::make(rand(100,50000)),]);

});

I know these codes are not clean I use this only to test what I want the other things are unnecessary. thanks.