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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 |
|---|---|
| 1299 | |
| 1300 | /** |
| 1301 | * Filters the login page errors. |
| 1302 | * |
| 1303 | * @since 3.6.0 |
| 1304 | * |
| 1305 | * @param object $errors WP Error object. |
| 1306 | * @param string $redirect_to Redirect destination URL. |
| 1307 | */ |
| 1308 | $errors = apply_filters( 'wp_login_errors', $errors, $redirect_to ); |
| 1309 | |
| 1310 | // Clear any stale cookies. |
| 1311 | if ( $reauth ) { |
| 1312 | wp_clear_auth_cookie(); |
| 1313 | } |
| 1314 | |
| 1315 | login_header( __( 'Log In' ), '', $errors ); |
| 1316 | |
| 1317 | if ( isset( $_POST['log'] ) ) { |