WP hooks navigation: Home/browse • Actions index • Filters index
To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN (without highlighting).
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 |
|---|---|
| 220 | * Filters the main site ID. |
| 221 | * |
| 222 | * Returning a positive integer will effectively short-circuit the function. |
| 223 | * |
| 224 | * @since 4.9.0 |
| 225 | * |
| 226 | * @param int|null $main_site_id If a positive integer is returned, it is interpreted as the main site ID. |
| 227 | * @param WP_Network $network The network object for which the main site was detected. |
| 228 | */ |
| 229 | $main_site_id = (int) apply_filters( 'pre_get_main_site_id', null, $this ); |
| 230 | if ( 0 < $main_site_id ) { |
| 231 | return $main_site_id; |
| 232 | } |
| 233 | |
| 234 | if ( 0 < (int) $this->blog_id ) { |
| 235 | return (int) $this->blog_id; |
| 236 | } |
| 237 | |
| 238 | if ( ( defined( 'DOMAIN_CURRENT_SITE' ) && defined( 'PATH_CURRENT_SITE' ) && DOMAIN_CURRENT_SITE === $this->domain && PATH_CURRENT_SITE === $this->path ) |