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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 |
|---|---|
| 52 | wp_add_dashboard_widget( 'dashboard_primary', __( 'WordPress News' ), 'wp_dashboard_primary' ); |
| 53 | |
| 54 | if ( is_network_admin() ) { |
| 55 | |
| 56 | /** |
| 57 | * Fires after core widgets for the Network Admin dashboard have been registered. |
| 58 | * |
| 59 | * @since 3.1.0 |
| 60 | */ |
| 61 | do_action( 'wp_network_dashboard_setup' ); |
| 62 | |
| 63 | /** |
| 64 | * Filter the list of widgets to load for the Network Admin dashboard. |
| 65 | * |
| 66 | * @since 3.1.0 |
| 67 | * |
| 68 | * @param array $dashboard_widgets An array of dashboard widgets. |
| 69 | */ |
| 70 | $dashboard_widgets = apply_filters( 'wp_network_dashboard_widgets', array() ); |