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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 |
|---|---|
| 240 | |
| 241 | if ( $menu_exists ) |
| 242 | return new WP_Error( 'menu_exists', sprintf( __('The menu name <strong>%s</strong> conflicts with another menu name. Please try another.'), esc_html( $menu_data['menu-name'] ) ) ); |
| 243 | |
| 244 | $_menu = wp_insert_term( $menu_data['menu-name'], 'nav_menu', $args ); |
| 245 | |
| 246 | if ( is_wp_error( $_menu ) ) |
| 247 | return $_menu; |
| 248 | |
| 249 | do_action( 'wp_create_nav_menu', $_menu['term_id'], $menu_data ); |
| 250 | |
| 251 | return (int) $_menu['term_id']; |
| 252 | } |
| 253 | |
| 254 | if ( ! $_menu || ! isset( $_menu->term_id ) ) |
| 255 | return 0; |
| 256 | |
| 257 | $menu_id = (int) $_menu->term_id; |
| 258 | |