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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 |
|---|---|
| 649 | |
| 650 | if ( hash_hmac( 'md5', $hmac, $key ) !== hash_hmac( 'md5', $hash, $key ) ) { |
| 651 | /** |
| 652 | * Fires if a bad authentication cookie hash is encountered. |
| 653 | * |
| 654 | * @since 2.7.0 |
| 655 | * |
| 656 | * @param array $cookie_elements An array of data for the authentication cookie. |
| 657 | */ |
| 658 | do_action( 'auth_cookie_bad_hash', $cookie_elements ); |
| 659 | return false; |
| 660 | } |
| 661 | |
| 662 | if ( $expiration < time() ) // AJAX/POST grace period set above |
| 663 | $GLOBALS['login_grace_period'] = 1; |
| 664 | |
| 665 | /** |
| 666 | * Fires once an authentication cookie has been validated. |
| 667 | * |