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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 |
|---|---|
| 301 | } else { |
| 302 | $cookie_login = wp_get_cookie_login(); |
| 303 | if ( ! empty($cookie_login) ) { |
| 304 | $using_cookie = true; |
| 305 | $user_login = $cookie_login['login']; |
| 306 | $user_pass = $cookie_login['password']; |
| 307 | } |
| 308 | } |
| 309 | |
| 310 | do_action_ref_array('wp_authenticate', array(&$user_login, &$user_pass)); |
| 311 | |
| 312 | // If cookies are disabled we can't log in even with a valid user+pass |
| 313 | if ( $_POST && empty($_COOKIE[TEST_COOKIE]) ) |
| 314 | $errors['test_cookie'] = __('<strong>ERROR</strong>: WordPress requires Cookies but your browser does not support them or they are blocked.'); |
| 315 | |
| 316 | if ( $user_login && $user_pass && empty( $errors ) ) { |
| 317 | $user = new WP_User(0, $user_login); |
| 318 | |
| 319 | // If the user can't edit posts, send them to their profile. |