title: What are current_user_can () function parameters?
body: <p>What are <code>current_user_can()</code> function parameters ?</p>
  
  <p>This function is used in wordpress script, I know a parameter called <code>publish_posts</code> , I want to know the other parameters .</p>
  
  <p>There is a sample code :</p>
  
  <pre><code>if( current_user_can( 'publish_posts' ) ) {
      require_once dirname( __FILE__ ) . '/post-form.php';
  }
  </code></pre>