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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 |
|---|---|
| 1272 | * |
| 1273 | * @param int $user_id |
| 1274 | * @param string $password |
| 1275 | * @param array $meta Optional. Not used in the default function, but is passed along to hooks for customization. |
| 1276 | * @return bool |
| 1277 | */ |
| 1278 | function wpmu_welcome_user_notification($user_id, $password, $meta = '') { |
| 1279 | global $current_site; |
| 1280 | |
| 1281 | if ( !apply_filters('wpmu_welcome_user_notification', $user_id, $password, $meta) ) |
| 1282 | return false; |
| 1283 | |
| 1284 | $welcome_email = get_site_option( 'welcome_user_email' ); |
| 1285 | |
| 1286 | $user = get_userdata( $user_id ); |
| 1287 | |
| 1288 | $welcome_email = apply_filters( 'update_welcome_user_email', $welcome_email, $user_id, $password, $meta); |
| 1289 | $welcome_email = str_replace( 'SITE_NAME', $current_site->site_name, $welcome_email ); |
| 1290 | $welcome_email = str_replace( 'USERNAME', $user->user_login, $welcome_email ); |