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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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980 | } |
981 |
|
982 | /** |
983 | * Filters the authentication redirect scheme. |
984 | * |
985 | * @since 2.9.0 |
986 | * |
987 | * @param string $scheme Authentication redirect scheme. Default empty. |
988 | */ |
989 | $scheme = apply_filters( 'auth_redirect_scheme', '' ); |
990 |
|
991 | if ( $user_id = wp_validate_auth_cookie( '', $scheme) ) { |
992 | /** |
993 | * Fires before the authentication redirect. |
994 | * |
995 | * @since 2.8.0 |
996 | * |
997 | * @param int $user_id User ID. |
998 | */ |