The string given by $plugin_path
is used as an array key for $wp-plugin_paths
, this is pretty standard behaviour in setting an array so it can be accessed later, to retrieve $plugin_realpath
via $wp_plugin_paths[$plugin_path]
.
If you want to see how it all comes out you can do:
add_action('init','print_plugin_paths');
function print_plugin_paths() {
global $wp_plugin_paths;
foreach ($wp_plugin_paths as $key => $value) {
echo "Plugin Path: ".$key." - ";
echo "Real Path: ".$value."<br>";
}
}