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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 |
|---|---|
| 209 | if ( $user instanceof WP_User && is_multisite() ) { |
| 210 | /** |
| 211 | * Filter whether the user has been marked as a spammer. |
| 212 | * |
| 213 | * @since 3.7.0 |
| 214 | * |
| 215 | * @param bool $spammed Whether the user is considered a spammer. |
| 216 | * @param WP_User $user User to check against. |
| 217 | */ |
| 218 | $spammed = apply_filters( 'check_is_user_spammed', is_user_spammy(), $user ); |
| 219 | |
| 220 | if ( $spammed ) |
| 221 | return new WP_Error( 'spammer_account', __( '<strong>ERROR</strong>: Your account has been marked as a spammer.' ) ); |
| 222 | } |
| 223 | return $user; |
| 224 | } |
| 225 | |
| 226 | /** |
| 227 | * Validate the logged-in cookie. |