Source View: add_attachment

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Understanding Source Code

The best way to understand what a hook does is to look at where it occurs in the source code.

  • Action hooks look like this: do_action( "hook_name" )
  • Filter hooks look like this: apply_filters( "hook_name", "what_to_filter" ).

Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.

Source View

Line Code
3442           } else {
3443
3444                /**
3445                 * Fires once an attachment has been added.
3446                 *
3447                 * @since 2.0.0
3448                 *
3449                 * @param int $post_ID Attachment ID.
3450                 */
3451                do_action( 'add_attachment', $post_ID );
3452           }
3453
3454           return $post_ID;
3455      }
3456
3457      if ( $update ) {
3458           /**
3459            * Fires once an existing post has been updated.
3460            *