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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 |
|---|---|
| 49 | * and can be modified by callback functions. |
| 50 | * |
| 51 | * @since 1.5.1 |
| 52 | * |
| 53 | * @todo Decide whether to deprecate the wp_authenticate action. |
| 54 | * |
| 55 | * @param string $user_login Username, passed by reference. |
| 56 | * @param string $user_password User password, passed by reference. |
| 57 | */ |
| 58 | do_action_ref_array( 'wp_authenticate', array( &$credentials['user_login'], &$credentials['user_password'] ) ); |
| 59 | |
| 60 | if ( '' === $secure_cookie ) |
| 61 | $secure_cookie = is_ssl(); |
| 62 | |
| 63 | /** |
| 64 | * Filters whether to use a secure sign-on cookie. |
| 65 | * |
| 66 | * @since 3.1.0 |
| 67 | * |