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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 |
|---|---|
| 28 | global $user_ID; |
| 29 | get_currentuserinfo(); |
| 30 | |
| 31 | if ('' == $user_ID) : |
| 32 | $link = '<a href="' . get_settings('siteurl') . '/wp-login.php">' . __('Login') . '</a>'; |
| 33 | else : |
| 34 | $link = '<a href="' . get_settings('siteurl') . '/wp-login.php?action=logout">' . __('Logout') . '</a>'; |
| 35 | endif; |
| 36 | |
| 37 | echo apply_filters('loginout', $link); |
| 38 | } |
| 39 | |
| 40 | function wp_register( $before = '<li>', $after = '</li>' ) { |
| 41 | global $user_ID; |
| 42 | |
| 43 | get_currentuserinfo(); |
| 44 | |
| 45 | if ('' == $user_ID && get_settings('users_can_register') ) : |
| 46 | $link = $before . '<a href="' . get_settings('siteurl') . '/wp-register.php">' . __('Register') . '</a>' . $after; |