laravel foreign id for code example

Example 1: laravel rollback last migration

php artisan migrate:rollback --step=1

Example 2: laravel foreign key

Schema::table('posts', function (Blueprint $table) {
    $table->unsignedBigInteger('user_id');

    $table->foreign('user_id')->references('id')->on('users');
});
OR
Schema::table('posts', function (Blueprint $table) {
    $table->foreignId('user_id')->constrained();
});

Example 3: laravel migration

$table->string('name', 100);

Example 4: laravel longblob migration

DB::statement("ALTER TABLE <table name> ADD <column name> MEDIUMBLOB");

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Php Example

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