A simple migration that allows us convert all the tables in our database to the InnoDB engine.

EngineMigrationCoversionDemo.php

<?php

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

class CovertAllTablesEngineToInnodb extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        $currentDB = config('database.connections.mysql.database');
        $tables = DB::select('SHOW TABLES');
        foreach($tables as $table) {
            DB::statement('ALTER TABLE ' . $table->{"Tables_in_" . $currentDB}  . ' ENGINE = InnoDB');
        }
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        $currentDB = config('database.connections.mysql.database');
        $tables = DB::select('SHOW TABLES');
        foreach($tables as $table) {
            DB::statement('ALTER TABLE ' . $table->{"Tables_in_" . $currentDB}  . ' ENGINE = MyISAM');
        }
    }
}