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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 |
|---|---|
| 1040 | |
| 1041 | /** |
| 1042 | * Filters the login page errors. |
| 1043 | * |
| 1044 | * @since 3.6.0 |
| 1045 | * |
| 1046 | * @param object $errors WP Error object. |
| 1047 | * @param string $redirect_to Redirect destination URL. |
| 1048 | */ |
| 1049 | $errors = apply_filters( 'wp_login_errors', $errors, $redirect_to ); |
| 1050 | |
| 1051 | // Clear any stale cookies. |
| 1052 | if ( $reauth ) { |
| 1053 | wp_clear_auth_cookie(); |
| 1054 | } |
| 1055 | |
| 1056 | login_header( __( 'Log In' ), '', $errors ); |
| 1057 | |
| 1058 | if ( isset( $_POST['log'] ) ) { |