drop foreign key laravel

1Schema::table('posts', function (Blueprint $table) {
2    $table->unsignedBigInteger('user_id');
3
4    $table->foreign('user_id')->references('id')->on('users');
5});
6OR
7Schema::table('posts', function (Blueprint $table) {
8    $table->foreignId('user_id')->constrained();
9});

1Schema::table('posts', function (Blueprint $table) {
2	$table->dropForeign(['category_id']);
3});

1$table->dropForeign('posts_user_id_foreign');

1// Searched, laravel drop foreign column
2Schema::table('users', function (Blueprint $table) {
3    $table->dropColumn(['votes', 'avatar', 'location']);
4});

1Schema::table('posts', function (Blueprint $table) {
2    $table->foreignId('user_id')->constrained();
3});
4
5/* The foreignId method is an alias for unsignedBigInteger while the
6 * constrained method will use conventions to determine the table and
7 * column name being referenced. If your table name does not match
8 * Laravel's conventions, you may specify the table name by passing it
9 * as an argument to the constrained method:
10*/
11
12Schema::table('posts', function (Blueprint $table) {
13    $table->foreignId('user_id')->constrained('users');
14});

1Schema::table('admins', function (Blueprint $table) {    $table->dropForeign('admins_post_id_foreign');    $table->dropColumn('post_id');});