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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 |
|---|---|
| 303 | |
| 304 | /** |
| 305 | * Filters the XML-RPC user login error message. |
| 306 | * |
| 307 | * @since 3.5.0 |
| 308 | * |
| 309 | * @param IXR_Error $error The XML-RPC error message. |
| 310 | * @param WP_Error $user WP_Error object. |
| 311 | */ |
| 312 | $this->error = apply_filters( 'xmlrpc_login_error', $this->error, $user ); |
| 313 | return false; |
| 314 | } |
| 315 | |
| 316 | wp_set_current_user( $user->ID ); |
| 317 | return $user; |
| 318 | } |
| 319 | |
| 320 | /** |
| 321 | * Check user's credentials. Deprecated. |