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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 |
|---|---|
| 636 | $user = get_userdata($user_id); |
| 637 | |
| 638 | $pass_frag = substr($user->user_pass, 8, 4); |
| 639 | |
| 640 | $key = wp_hash($user->user_login . $pass_frag . '|' . $expiration, $scheme); |
| 641 | $hash = hash_hmac('md5', $user->user_login . '|' . $expiration, $key); |
| 642 | |
| 643 | $cookie = $user->user_login . '|' . $expiration . '|' . $hash; |
| 644 | |
| 645 | return apply_filters('auth_cookie', $cookie, $user_id, $expiration, $scheme); |
| 646 | } |
| 647 | endif; |
| 648 | |
| 649 | if ( !function_exists('wp_parse_auth_cookie') ) : |
| 650 | /** |
| 651 | * Parse a cookie into its components |
| 652 | * |
| 653 | * @since 2.7 |
| 654 | * |