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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 |
|---|---|
| 1331 | |
| 1332 | /** |
| 1333 | * Filters the login page errors. |
| 1334 | * |
| 1335 | * @since 3.6.0 |
| 1336 | * |
| 1337 | * @param WP_Error $errors WP Error object. |
| 1338 | * @param string $redirect_to Redirect destination URL. |
| 1339 | */ |
| 1340 | $errors = apply_filters( 'wp_login_errors', $errors, $redirect_to ); |
| 1341 | |
| 1342 | // Clear any stale cookies. |
| 1343 | if ( $reauth ) { |
| 1344 | wp_clear_auth_cookie(); |
| 1345 | } |
| 1346 | |
| 1347 | login_header( __( 'Log In' ), '', $errors ); |
| 1348 | |
| 1349 | if ( isset( $_POST['log'] ) ) { |