Plugin path comes wrongly

Question

I need import css files from a folder in plugin directory to a plugin php file.

I tried

plugin_dir_path( __FILE__ );

<link rel="stylesheet" href="<?php echo __DIR__ . '/dahili/bootstrap.min.css'; ?>">
<link rel="stylesheet" href="./dahili/bootstrap.min.css">

but they gives wrong url.

for example, in my last trying, I get this adress:

http://www.hekim.deniz-tasarim.site/home/deniztas/hekim.deniz-tasarim.site/wp-content/plugins/my_post_plugin/widgets/dahili/bootstrap.min.css

but I need this:

hekim.deniz-tasarim.site/wp-content/plugins/my_post_plugin/widgets/dahili/bootstrap.min.css

how to get true address?

Note: Please dont close my question because of dublicate if you dont give 100% same question because I need real solution, I am not troll.

Answer 1

To solve this problem, we must use plugin_dir_url command.

For example:

<?php
                    wp_register_style( 'foo-styles',  plugin_dir_url( __FILE__ ) . 'dahili/bootstrap.min.css' );
                    wp_enqueue_style( 'foo-styles' );

?>