Title: How correctly define paths for wp plugins Last modified: December 14, 2017 --- # How correctly define paths for wp plugins * [neo332](https://wordpress.org/support/users/neo332/) * (@neo332) * [8 years, 5 months ago](https://wordpress.org/support/topic/how-correctly-define-paths-for-wp-plugins/) * Hi! Before I did one plugin where I’d defined paths like * ``` You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ define('PLUGIN_FOLDER', dirname(__FILE__) ); define('CORE_FOLDER', PLUGIN_FOLDER.'/core'); require_once CORE_FOLDER.'/class/Select_car_brand.php'; $scb = new Select_car_brand(); $scb->ini(); // add_shortcode( 'select-car-brand', 'handle_select_car_brand' ); ``` * But when I put this code in second plugin I got error, such file doesn’t exists, because there was already determined PLUGIN_FOLDER . * How correctly to determine plugin paths variables? * And I want use OOP for creating plugins and also don’t know how it use in correct way???? Viewing 8 replies - 1 through 8 (of 8 total) * [ThemesGrove](https://wordpress.org/support/users/themesgrove/) * (@themesgrove) * [8 years, 5 months ago](https://wordpress.org/support/topic/how-correctly-define-paths-for-wp-plugins/#post-9783315) * Hello, Make sure core folder is exists in that directory. You can also var_dump()` define('PLUGIN_FOLDER', dirname(__FILE__) );` this and check if it is that file. You can also debug line by line. You will get answer. thanks. * [kjodle](https://wordpress.org/support/users/kjodle/) * (@kjodle) * [8 years, 5 months ago](https://wordpress.org/support/topic/how-correctly-define-paths-for-wp-plugins/#post-9783334) * `plugin_dir_path()` will return the path of the directory the plugin is in. See [https://developer.wordpress.org/reference/functions/plugin_dir_path/](https://developer.wordpress.org/reference/functions/plugin_dir_path/) * With regard to using OOP, this isn’t really a WordPress issue. There are lots of sources online for learning it. Just make sure your code (whether procedural or object oriented) follows WordPress best practices: * [https://developer.wordpress.org/plugins/the-basics/best-practices/](https://developer.wordpress.org/plugins/the-basics/best-practices/) * Thread Starter [neo332](https://wordpress.org/support/users/neo332/) * (@neo332) * [8 years, 5 months ago](https://wordpress.org/support/topic/how-correctly-define-paths-for-wp-plugins/#post-9783369) * I’m going to do it OOP style, but there only one example and file structure not like there. I’ll use my own structure /core /libs folders, and others files won’t like there in guide. * [Keith](https://wordpress.org/support/users/keithdriscoll/) * (@keithdriscoll) * [8 years, 5 months ago](https://wordpress.org/support/topic/how-correctly-define-paths-for-wp-plugins/#post-9783415) * Have you taken a look at [WordPress Plugin Boilerplate](https://github.com/DevinVinson/WordPress-Plugin-Boilerplate)? It is exactly what the name implies and is written OOP style. As others have mentioned, there are good tutorials online as well. * Thread Starter [neo332](https://wordpress.org/support/users/neo332/) * (@neo332) * [8 years, 5 months ago](https://wordpress.org/support/topic/how-correctly-define-paths-for-wp-plugins/#post-9783457) * I’ve already seen it, I want other structure where will folder with classes that I’ll use in each other plugins, For example I created class CSV and I can use it in any other plugins, or class form for create form and again I won’t recreat it. * In some classes I will use path to this plugin and each plugin has other paths, path easy find dirname(__FILE__). * I have problem with url, it’s I’ve little confused theme. I’ve created class Included_files, that is manage included files and I need to get url for my included files now there I include jQueryUI, that I placed in /libs, folder, This class Included_files placed in folder /core/class/Included_files.php, * For get url I did this code: * ``` function ini(){ $this->url=plugin_dir_url(__FILE__)."../../libs"; } ``` * url for /lib where will all others libs. is it normally use ../../ ??? because plugin_dir_url(__FILE__) return dir to my current file. * I think probably should think self and create ideal structure. That structure that I saw in boilerplate seems not good. That is suite for procetural programming, for classes should to do other structure where will loaders of classes. * I don’t know, I’ve done it the second time and as usual problems with paths. Can’t reuse next time the same code. I always change structure but I won’t to do it again…. * [Keith](https://wordpress.org/support/users/keithdriscoll/) * (@keithdriscoll) * [8 years, 5 months ago](https://wordpress.org/support/topic/how-correctly-define-paths-for-wp-plugins/#post-9783522) * Well, you certainly are free to create a structure and style that makes sense to you. I would just recommend that it meets the WordPress coding standards. * I should point out that the boilerplate I pointed you towards is sorta like the“ underscores” (starter them by Automattic) of plugins. It was created by some popular and experienced WordPress contributors and I can’t imagine not being able to build upon it. Before writing off the idea of starting with it, I hope you took a moment to read the docs and study the code. * Good luck! * Thread Starter [neo332](https://wordpress.org/support/users/neo332/) * (@neo332) * [8 years, 5 months ago](https://wordpress.org/support/topic/how-correctly-define-paths-for-wp-plugins/#post-9783542) * Ok, Thanks, I haven’t read yet that code, but I’ll do… code in wp documentation I mean. - This reply was modified 8 years, 5 months ago by [neo332](https://wordpress.org/support/users/neo332/). * [catacaustic](https://wordpress.org/support/users/catacaustic/) * (@catacaustic) * [8 years, 5 months ago](https://wordpress.org/support/topic/how-correctly-define-paths-for-wp-plugins/#post-9784121) * The problem is that you can only define a value once. So when you try to defne that same thing in the second plugin it fails, as it’s meant to. * The way to get around this is to call the second variable a different name. eg: * Plugin 1: `define( 'PLUGIN_1_URI', __FILE__ );` * Plugin 2: `define( 'PLUGIN_2_URI', __FILE__ );` * Remember that any value that’s defined using define() is global no matter where it’s called from (even inside namespaces). Viewing 8 replies - 1 through 8 (of 8 total) The topic ‘How correctly define paths for wp plugins’ is closed to new replies. * In: [Developing with WordPress](https://wordpress.org/support/forum/wp-advanced/) * 8 replies * 5 participants * Last reply from: [catacaustic](https://wordpress.org/support/users/catacaustic/) * Last activity: [8 years, 5 months ago](https://wordpress.org/support/topic/how-correctly-define-paths-for-wp-plugins/#post-9784121) * Status: not resolved ## Topics ### Topics with no replies ### Non-support topics ### Resolved topics ### Unresolved topics ### All topics