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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 |
|---|---|
| 78 | /** |
| 79 | * Filters the "WordPress.org" list item HTML in the Meta widget. |
| 80 | * |
| 81 | * @since 3.6.0 |
| 82 | * @since 4.9.0 Added the `$instance` parameter. |
| 83 | * |
| 84 | * @param string $html Default HTML for the WordPress.org list item. |
| 85 | * @param array $instance Array of settings for the current widget. |
| 86 | */ |
| 87 | echo apply_filters( |
| 88 | 'widget_meta_poweredby', |
| 89 | sprintf( |
| 90 | '<li><a href="%1$s">%2$s</a></li>', |
| 91 | esc_url( __( 'https://wordpress.org/' ) ), |
| 92 | __( 'WordPress.org' ) |
| 93 | ), |
| 94 | $instance |
| 95 | ); |
| 96 | |