WP_PLUGIN_DIR

Full path, no trailing slash.

Value (string)

WP_CONTENT_DIR . '/plugins' 

Usage

  1. if ( defined( 'WP_PLUGIN_DIR' ) ) { 
  2.      
  3.     // grab the value 
  4.     $value = constant( 'WP_PLUGIN_DIR' ); 
  5.                  
  6.     if ( !empty( $value ) ) { 
  7.         // go forth and prosper... 
  8.     } 
  9. } 
  10.  

Defined (1)

The constant is defined in the following location(s).

/wp-includes/default-constants.php  
  1. define( 'WP_PLUGIN_DIR', WP_CONTENT_DIR . '/plugins' ); // full path, no trailing slash