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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 |
|---|---|
| 92 | function get_sidebar( $name = null ) { |
| 93 | /** |
| 94 | * Fires before the sidebar template file is loaded. |
| 95 | * |
| 96 | * @since 2.2.0 |
| 97 | * @since 2.8.0 $name parameter added. |
| 98 | * |
| 99 | * @param string|null $name Name of the specific sidebar file to use. null for the default sidebar. |
| 100 | */ |
| 101 | do_action( 'get_sidebar', $name ); |
| 102 | |
| 103 | $templates = array(); |
| 104 | $name = (string) $name; |
| 105 | if ( '' !== $name ) |
| 106 | $templates[] = "sidebar-{$name}.php"; |
| 107 | |
| 108 | $templates[] = 'sidebar.php'; |
| 109 | |
| 110 | locate_template( $templates, true ); |