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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 |
---|---|
1099 | } |
1100 |
|
1101 | /** |
1102 | * Filters the authentication redirect scheme. |
1103 | * |
1104 | * @since 2.9.0 |
1105 | * |
1106 | * @param string $scheme Authentication redirect scheme. Default empty. |
1107 | */ |
1108 | $scheme = apply_filters( 'auth_redirect_scheme', '' ); |
1109 |
|
1110 | $user_id = wp_validate_auth_cookie( '', $scheme ); |
1111 | if ( $user_id ) { |
1112 | /** |
1113 | * Fires before the authentication redirect. |
1114 | * |
1115 | * @since 2.8.0 |
1116 | * |
1117 | * @param int $user_id User ID. |