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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 |
---|---|
1084 | if ( !$post = & get_post($id) ) |
1085 | return false; |
1086 |
|
1087 | if ( $innerHTML = get_attachment_icon($post->ID, $fullsize, $max_dims)) |
1088 | return $innerHTML; |
1089 |
|
1090 |
|
1091 | $innerHTML = esc_attr($post->post_title); |
1092 |
|
1093 | return apply_filters('attachment_innerHTML', $innerHTML, $post->ID); |
1094 | } |
1095 |
|
1096 | /** |
1097 | * Wrap attachment in <<p>> element before content. |
1098 | * |
1099 | * @since 2.0.0 |
1100 | * @uses apply_filters() Calls 'prepend_attachment' hook on HTML content. |
1101 | * |
1102 | * @param string $content |