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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 |
|---|---|
| 577 | $user = get_userdata($user_id); |
| 578 | |
| 579 | $pass_frag = substr($user->user_pass, 8, 4); |
| 580 | |
| 581 | $key = wp_hash($user->user_login . $pass_frag . '|' . $expiration, $scheme); |
| 582 | $hash = hash_hmac('md5', $user->user_login . '|' . $expiration, $key); |
| 583 | |
| 584 | $cookie = $user->user_login . '|' . $expiration . '|' . $hash; |
| 585 | |
| 586 | return apply_filters('auth_cookie', $cookie, $user_id, $expiration, $scheme); |
| 587 | } |
| 588 | endif; |
| 589 | |
| 590 | if ( !function_exists('wp_parse_auth_cookie') ) : |
| 591 | /** |
| 592 | * Parse a cookie into its components |
| 593 | * |
| 594 | * @since 2.7 |
| 595 | * |