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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 |
|---|---|
| 3389 | * |
| 3390 | * @since 2.7.0 |
| 3391 | * |
| 3392 | * @param string $url The complete site URL including scheme and path. |
| 3393 | * @param string $path Path relative to the site URL. Blank string if no path is specified. |
| 3394 | * @param string|null $scheme Scheme to give the site URL context. Accepts 'http', 'https', 'login', |
| 3395 | * 'login_post', 'admin', 'relative' or null. |
| 3396 | * @param int|null $blog_id Site ID, or null for the current site. |
| 3397 | */ |
| 3398 | return apply_filters( 'site_url', $url, $path, $scheme, $blog_id ); |
| 3399 | } |
| 3400 | |
| 3401 | /** |
| 3402 | * Retrieves the URL to the admin area for the current site. |
| 3403 | * |
| 3404 | * @since 2.6.0 |
| 3405 | * |
| 3406 | * @param string $path Optional. Path relative to the admin URL. Default 'admin'. |
| 3407 | * @param string $scheme The scheme to use. Default is 'admin', which obeys force_ssl_admin() and is_ssl(). |