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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 |
---|---|
4285 | } else { |
4286 | if ( $update ) { |
4287 | /** |
4288 | * Fires once an existing attachment has been updated. |
4289 | * |
4290 | * @since 2.0.0 |
4291 | * |
4292 | * @param int $post_ID Attachment ID. |
4293 | */ |
4294 | do_action( 'edit_attachment', $post_ID ); |
4295 |
|
4296 | $post_after = get_post( $post_ID ); |
4297 |
|
4298 | /** |
4299 | * Fires once an existing attachment has been updated. |
4300 | * |
4301 | * @since 4.4.0 |
4302 | * |
4303 | * @param int $post_ID Post ID. |