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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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1017 | } |
1018 |
|
1019 | /** |
1020 | * Filters the authentication redirect scheme. |
1021 | * |
1022 | * @since 2.9.0 |
1023 | * |
1024 | * @param string $scheme Authentication redirect scheme. Default empty. |
1025 | */ |
1026 | $scheme = apply_filters( 'auth_redirect_scheme', '' ); |
1027 |
|
1028 | if ( $user_id = wp_validate_auth_cookie( '', $scheme) ) { |
1029 | /** |
1030 | * Fires before the authentication redirect. |
1031 | * |
1032 | * @since 2.8.0 |
1033 | * |
1034 | * @param int $user_id User ID. |
1035 | */ |