migración.php

<?php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Schema;

class CrearPrimerCliente extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::table('clientes', function (Blueprint $table) {
            //
        });
        DB::table("clientes")
            ->insert([
                "nombre" => "Mostrador",
                "telefono" => "0123456789",
            ]);
    }


    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public
    function down()
    {
        Schema::table('clientes', function (Blueprint $table) {
            //
        });
    }
}