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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 |
|---|---|
| 72 | * and can be modified by callback functions. |
| 73 | * |
| 74 | * @since 1.5.1 |
| 75 | * |
| 76 | * @todo Decide whether to deprecate the wp_authenticate action. |
| 77 | * |
| 78 | * @param string $user_login Username (passed by reference). |
| 79 | * @param string $user_password User password (passed by reference). |
| 80 | */ |
| 81 | do_action_ref_array( 'wp_authenticate', array( &$credentials['user_login'], &$credentials['user_password'] ) ); |
| 82 | |
| 83 | if ( '' === $secure_cookie ) { |
| 84 | $secure_cookie = is_ssl(); |
| 85 | } |
| 86 | |
| 87 | /** |
| 88 | * Filters whether to use a secure sign-on cookie. |
| 89 | * |
| 90 | * @since 3.1.0 |