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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 |
|---|---|
| 5085 | } else { |
| 5086 | if ( $update ) { |
| 5087 | /** |
| 5088 | * Fires once an existing attachment has been updated. |
| 5089 | * |
| 5090 | * @since 2.0.0 |
| 5091 | * |
| 5092 | * @param int $post_id Attachment ID. |
| 5093 | */ |
| 5094 | do_action( 'edit_attachment', $post_id ); |
| 5095 | |
| 5096 | $post_after = get_post( $post_id ); |
| 5097 | |
| 5098 | /** |
| 5099 | * Fires once an existing attachment has been updated. |
| 5100 | * |
| 5101 | * @since 4.4.0 |
| 5102 | * |
| 5103 | * @param int $post_id Post ID. |