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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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1197 | } |
1198 |
|
1199 | /** |
1200 | * Filters the authentication redirect scheme. |
1201 | * |
1202 | * @since 2.9.0 |
1203 | * |
1204 | * @param string $scheme Authentication redirect scheme. Default empty. |
1205 | */ |
1206 | $scheme = apply_filters( 'auth_redirect_scheme', '' ); |
1207 |
|
1208 | $user_id = wp_validate_auth_cookie( '', $scheme ); |
1209 | if ( $user_id ) { |
1210 | /** |
1211 | * Fires before the authentication redirect. |
1212 | * |
1213 | * @since 2.8.0 |
1214 | * |
1215 | * @param int $user_id User ID. |