mertbuldur/validation-backend.php

## validation-backend.php
<?php

namespace App\Http\Controllers;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Validator;

class indexController extends Controller
{
    public function index(){
        return view('form');
    }

    public function store(Request $request){
        $validator = Validator::make($request->all(),[
            'invoice'=>'required|integer',
            'isInvoice'=>'required|integer',
        ]);
        $validator->sometimes('name','required',function($request){
           return $request->invoice == 1 && $request->isInvoice == 0;
        });
        $validator->sometimes('phone','required',function($request){
            return $request->invoice == 1  && $request->isInvoice == 0;
        });
        $validator->sometimes('companyName','required|string',function($request){
            return ($request->invoice == 2 && $request->isInvoice == 0);
        });
        $validator->sometimes('taxNumber','required',function($request){
            return ($request->invoice == 2 && $request->isInvoice == 0);
        });
        if($validator->fails()){
            dd($validator->errors());
        }


        /*
        $request->validate([
           'invoice'=>'required|integer',
           'name'=>'required_if:invoice,1',
           'phone'=>'required_if:invoice,1',
           'companyName'=>'required_if:invoice,2',
           'taxNumber'=>'required_if:invoice,2',

        ]);
    */


        $all = $request->all();
        dd($all);

    }
}

## validation-client.html
<html>
<head>
    <title>Validate</title>
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.1/dist/css/bootstrap.min.css">
    <style>
        .s-box { display: none}
    </style>
</head>
<body>
<div>
    <div class="container">
        <form action="" method="POST">
            @csrf
            <input type="hidden" name="isInvoice" value="0">
            <h3>Kullanıcı Bilgileri</h3>
            <div class="form-group">
                <label for="">Kullanıcı Adı</label>
                <input type="text" name="username" required class="form-control">
            </div>
            <div class="form-group">
                <label for="">Kullanıcı Email</label>
                <input type="text" name="email" required class="form-control">
            </div>
            <div class="form-group">
                <label for="">Kullanıcı Şifre</label>
                <input type="text" name="password" class="form-control">
            </div>


            <h3>Fatura Bilgileri</h3>
            <div class="mb-2">
                <input type="checkbox" name="isInvoice" value="1" checked> Bireysel bilgilerim ile fatura bilgim aynı
            </div>

          <div id="invoice-area" style="display: none;">
           <div class=" d-flex  flex-row" >
                <div class="mr-2">
                    <input type="radio" class="checkbox-select" data-open=".bireysel-alan" name="invoice" checked value="1"> Bireysel
                </div>
                <div class="ml-2">
                    <input type="radio" class="checkbox-select" data-open=".kurumsal-alan" name="invoice" value="2"> Kurumsal
                </div>
            </div>

        <div class="mt-2 bireysel-alan s-box" style="display: block">
            <div class="form-group">
                <label for="">Ad Soyad</label>
                <input type="text" name="name"  class="form-control">
            </div>
            <div class="form-group">
                <label for="">Telefon</label>
                <input type="text" name="phone"  class="form-control">
            </div>
        </div>

        <div class="mt-2 kurumsal-alan s-box" >
            <div class="form-group">
                <label for="">Firma Adı</label>
                <input type="text" name="companyName" class="form-control">
            </div>
            <div class="form-group">
                <label for="">Vergi Numarası</label>
                <input type="text" name="taxNumber" class="form-control">
            </div>
        </div>
        </div>
            <button class="btn btn-success mt-2">Kaydet</button>
        </form>
    </div>


</div>

<script src="https://code.jquery.com/jquery-2.2.4.min.js"></script>
<script>
$(document).ready(function(){
   $(".checkbox-select").click(function(){
       const divName = $(this).data("open");
       if(divName == '.bireysel-alan'){
            $(".bireysel-alan").find('input,select,textarea').each(function(){
               $(this).prop('required',true);
            });
           $(".kurumsal-alan").find('input,select,textarea').each(function(){
               $(this).prop('required',false);
           });
       }
       if(divName == '.kurumsal-alan'){
           $(".bireysel-alan").find('input,select,textarea').each(function(){
               $(this).prop('required',false);
           });
           $(".kurumsal-alan").find('input,select,textarea').each(function(){
               $(this).prop('required',true);
           });
       }

       $(".s-box").hide();
       $(divName).show();
   });
   $("input[name=isInvoice]").click(function(){
        if($(this).is(":checked")){
            $(".bireysel-alan").find('input,select,textarea').each(function(){
                $(this).prop('required',false);
            });
            $(".kurumsal-alan").find('input,select,textarea').each(function(){
                $(this).prop('required',false);
            });
          $("#invoice-area").hide();
       }
       else
       {
           $(".bireysel-alan").find('input,select,textarea').each(function(){
               $(this).prop('required',true);
           });
           $("#invoice-area").show();
       }
   });
});

</script>
</body>
</html>
	<?php

	namespace App\Http\Controllers;
	use Illuminate\Http\Request;
	use Illuminate\Support\Facades\Validator;

	class indexController extends Controller
	{
	public function index(){
	return view('form');
	}

	public function store(Request $request){
	$validator = Validator::make($request->all(),[
	'invoice'=>'required\|integer',
	'isInvoice'=>'required\|integer',
	]);
	$validator->sometimes('name','required',function($request){
	return $request->invoice == 1 && $request->isInvoice == 0;
	});
	$validator->sometimes('phone','required',function($request){
	return $request->invoice == 1 && $request->isInvoice == 0;
	});
	$validator->sometimes('companyName','required\|string',function($request){
	return ($request->invoice == 2 && $request->isInvoice == 0);
	});
	$validator->sometimes('taxNumber','required',function($request){
	return ($request->invoice == 2 && $request->isInvoice == 0);
	});
	if($validator->fails()){
	dd($validator->errors());
	}


	/*
	$request->validate([
	'invoice'=>'required\|integer',
	'name'=>'required_if:invoice,1',
	'phone'=>'required_if:invoice,1',
	'companyName'=>'required_if:invoice,2',
	'taxNumber'=>'required_if:invoice,2',

	]);
	*/




	$all = $request->all();
	dd($all);

	}
	}
	<html>
	<head>
	<title>Validate</title>
	<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.1/dist/css/bootstrap.min.css">
	<style>
	.s-box { display: none}
	</style>
	</head>
	<body>
	<div>
	<div class="container">
	<form action="" method="POST">
	@csrf
	<input type="hidden" name="isInvoice" value="0">
	<h3>Kullanıcı Bilgileri</h3>
	<div class="form-group">
	<label for="">Kullanıcı Adı</label>
	<input type="text" name="username" required class="form-control">
	</div>
	<div class="form-group">
	<label for="">Kullanıcı Email</label>
	<input type="text" name="email" required class="form-control">
	</div>
	<div class="form-group">
	<label for="">Kullanıcı Şifre</label>
	<input type="text" name="password" class="form-control">
	</div>


	<h3>Fatura Bilgileri</h3>
	<div class="mb-2">
	<input type="checkbox" name="isInvoice" value="1" checked> Bireysel bilgilerim ile fatura bilgim aynı
	</div>

	<div id="invoice-area" style="display: none;">
	<div class=" d-flex flex-row" >
	<div class="mr-2">
	<input type="radio" class="checkbox-select" data-open=".bireysel-alan" name="invoice" checked value="1"> Bireysel
	</div>
	<div class="ml-2">
	<input type="radio" class="checkbox-select" data-open=".kurumsal-alan" name="invoice" value="2"> Kurumsal
	</div>
	</div>

	<div class="mt-2 bireysel-alan s-box" style="display: block">
	<div class="form-group">
	<label for="">Ad Soyad</label>
	<input type="text" name="name" class="form-control">
	</div>
	<div class="form-group">
	<label for="">Telefon</label>
	<input type="text" name="phone" class="form-control">
	</div>
	</div>

	<div class="mt-2 kurumsal-alan s-box" >
	<div class="form-group">
	<label for="">Firma Adı</label>
	<input type="text" name="companyName" class="form-control">
	</div>
	<div class="form-group">
	<label for="">Vergi Numarası</label>
	<input type="text" name="taxNumber" class="form-control">
	</div>
	</div>
	</div>
	<button class="btn btn-success mt-2">Kaydet</button>
	</form>
	</div>


	</div>

	<script src="https://code.jquery.com/jquery-2.2.4.min.js"></script>
	<script>
	$(document).ready(function(){
	$(".checkbox-select").click(function(){
	const divName = $(this).data("open");
	if(divName == '.bireysel-alan'){
	$(".bireysel-alan").find('input,select,textarea').each(function(){
	$(this).prop('required',true);
	});
	$(".kurumsal-alan").find('input,select,textarea').each(function(){
	$(this).prop('required',false);
	});
	}
	if(divName == '.kurumsal-alan'){
	$(".bireysel-alan").find('input,select,textarea').each(function(){
	$(this).prop('required',false);
	});
	$(".kurumsal-alan").find('input,select,textarea').each(function(){
	$(this).prop('required',true);
	});
	}

	$(".s-box").hide();
	$(divName).show();
	});
	$("input[name=isInvoice]").click(function(){
	if($(this).is(":checked")){
	$(".bireysel-alan").find('input,select,textarea').each(function(){
	$(this).prop('required',false);
	});
	$(".kurumsal-alan").find('input,select,textarea').each(function(){
	$(this).prop('required',false);
	});
	$("#invoice-area").hide();
	}
	else
	{
	$(".bireysel-alan").find('input,select,textarea').each(function(){
	$(this).prop('required',true);
	});
	$("#invoice-area").show();
	}
	});
	});

	</script>
	</body>
	</html>