[5.5] Validation of array on request returns bad array

[mbaeuerle]

• Laravel Version: 5.5.1
• PHP Version: 7.1.8
• Database Driver & Version: -

Description:

When trying to validate an array through $params = $request->validate([]) the returning $params contains the key * which was not specified.

Steps To Reproduce:

• Create a route:

Route::post('/test', function (Request $request) {
    $data = $request->validate([
        'test' => 'required|array',
        'test.*.a' => 'required|integer',
    ]);

    dump($data);
    return new \Symfony\Component\HttpFoundation\Response();
});

• Call it with:

{
  "test": [{
    "a": 123
  }]
}

• Dump shows:

array:1 [
  "test" => array:2 [
    0 => array:1 [
      "a" => 123
    ]
    "*" => array:1 [
      "a" => array:1 [
        0 => 123
      ]
    ]
  ]
]

[themsaid]

Handled in #20974