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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 |
|---|---|
| 3198 | |
| 3199 | /** |
| 3200 | * Filter whether to allow anonymous comments over XML-RPC. |
| 3201 | * |
| 3202 | * @since 2.7.0 |
| 3203 | * |
| 3204 | * @param bool $allow Whether to allow anonymous commenting via XML-RPC. |
| 3205 | * Default false. |
| 3206 | */ |
| 3207 | $allow_anon = apply_filters( 'xmlrpc_allow_anonymous_comments', false ); |
| 3208 | |
| 3209 | $user = $this->login($username, $password); |
| 3210 | |
| 3211 | if ( !$user ) { |
| 3212 | $logged_in = false; |
| 3213 | if ( $allow_anon && get_option('comment_registration') ) { |
| 3214 | return new IXR_Error( 403, __( 'You must be registered to comment' ) ); |
| 3215 | } elseif ( ! $allow_anon ) { |
| 3216 | return $this->error; |