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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 |
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872 |
|
873 | /** |
874 | * Filter the login page errors. |
875 | * |
876 | * @since 3.6.0 |
877 | * |
878 | * @param object $errors WP Error object. |
879 | * @param string $redirect_to Redirect destination URL. |
880 | */ |
881 | $errors = apply_filters( 'wp_login_errors', $errors, $redirect_to ); |
882 |
|
883 | // Clear any stale cookies. |
884 | if ( $reauth ) |
885 | wp_clear_auth_cookie(); |
886 |
|
887 | login_header(__('Log In'), '', $errors); |
888 |
|
889 | if ( isset($_POST['log']) ) |
890 | $user_login = ( 'incorrect_password' == $errors->get_error_code() || 'empty_password' == $errors->get_error_code() ) ? esc_attr(wp_unslash($_POST['log'])) : ''; |