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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 |
|---|---|
| 3436 | * |
| 3437 | * @since 3.0.0 |
| 3438 | * |
| 3439 | * @param string $url The complete home URL including scheme and path. |
| 3440 | * @param string $path Path relative to the home URL. Blank string if no path is specified. |
| 3441 | * @param string|null $orig_scheme Scheme to give the home URL context. Accepts 'http', 'https', |
| 3442 | * 'relative', 'rest', or null. |
| 3443 | * @param int|null $blog_id Site ID, or null for the current site. |
| 3444 | */ |
| 3445 | return apply_filters( 'home_url', $url, $path, $orig_scheme, $blog_id ); |
| 3446 | } |
| 3447 | |
| 3448 | /** |
| 3449 | * Retrieves the URL for the current site where WordPress application files |
| 3450 | * (e.g. wp-blog-header.php or the wp-admin/ folder) are accessible. |
| 3451 | * |
| 3452 | * Returns the 'site_url' option with the appropriate protocol, 'https' if |
| 3453 | * is_ssl() and 'http' otherwise. If $scheme is 'http' or 'https', is_ssl() is |
| 3454 | * overridden. |