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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 |
|---|---|
| 1974 | $id = (int) $id; |
| 1975 | if ( !$post = get_post($id) ) |
| 1976 | return false; |
| 1977 | |
| 1978 | if ( $innerHTML = get_attachment_icon($post->ID, $fullsize, $max_dims)) |
| 1979 | return $innerHTML; |
| 1980 | |
| 1981 | $innerHTML = esc_attr($post->post_title); |
| 1982 | |
| 1983 | return apply_filters('attachment_innerHTML', $innerHTML, $post->ID); |
| 1984 | } |
| 1985 | |
| 1986 | /** |
| 1987 | * Retrieves bookmark data based on ID. |
| 1988 | * |
| 1989 | * @since 2.0.0 |
| 1990 | * @deprecated 2.1.0 Use get_bookmark() |
| 1991 | * @see get_bookmark() |
| 1992 | * |