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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 |
|---|---|
| 239 | $user_id = (int) $user_id; |
| 240 | /** |
| 241 | * Fires before a user is removed from a site. |
| 242 | * |
| 243 | * @since MU (3.0.0) |
| 244 | * |
| 245 | * @param int $user_id User ID. |
| 246 | * @param int $blog_id Blog ID. |
| 247 | */ |
| 248 | do_action( 'remove_user_from_blog', $user_id, $blog_id ); |
| 249 | |
| 250 | // If being removed from the primary blog, set a new primary if the user is assigned |
| 251 | // to multiple blogs. |
| 252 | $primary_blog = get_user_meta( $user_id, 'primary_blog', true ); |
| 253 | if ( $primary_blog == $blog_id ) { |
| 254 | $new_id = ''; |
| 255 | $new_domain = ''; |
| 256 | $blogs = get_blogs_of_user( $user_id ); |
| 257 | foreach ( (array) $blogs as $blog ) { |