Wordpress get plugin directory

Question

Is there any function that would return the full path of my plugin in WordPress?

Example is

path/wp-contents/plugins/myplugin 

I have tried plugin_dir_path(__FILE__) but returns the current dir.

Answer 1

I would suggest to use a WordPress internal constant to solve this case:

$my_plugin = WP_PLUGIN_DIR . '/my-plugin';  if ( is_dir( $my_plugin ) ) {     // plugin directory found! } 

Alternative

The other valid alternative is to compute the path from the URL which is more complex/confusing. I would not use this code:

$plugins_url = plugins_url(); $base_url = get_option( 'siteurl' ); $plugins_dir = str_replace( $base_url, ABSPATH, $plugins_url ); // Now $plugins_dir is same as the WP_PLUGIN_DIR constant.  $my_plugin = $plugins_dir . '/my-plugin'; 

My opinion in this case is: Use the constant WP_PLUGIN_DIR