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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )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.
| Line | Code |
|---|---|
| 1997 | $id = (int) $id; |
| 1998 | if ( !$post = get_post($id) ) |
| 1999 | return false; |
| 2000 | |
| 2001 | if ( $innerHTML = get_attachment_icon($post->ID, $fullsize, $max_dims)) |
| 2002 | return $innerHTML; |
| 2003 | |
| 2004 | $innerHTML = esc_attr($post->post_title); |
| 2005 | |
| 2006 | return apply_filters('attachment_innerHTML', $innerHTML, $post->ID); |
| 2007 | } |
| 2008 | |
| 2009 | /** |
| 2010 | * Retrieves bookmark data based on ID. |
| 2011 | * |
| 2012 | * @since 2.0.0 |
| 2013 | * @deprecated 2.1.0 Use get_bookmark() |
| 2014 | * @see get_bookmark() |
| 2015 | * |