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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 |
|---|---|
| 522 | |
| 523 | $expired = $expiration; |
| 524 | |
| 525 | // Allow a grace period for POST and AJAX requests |
| 526 | if ( defined('DOING_AJAX') || 'POST' == $_SERVER['REQUEST_METHOD'] ) |
| 527 | $expired += HOUR_IN_SECONDS; |
| 528 | |
| 529 | // Quick check to see if an honest cookie has expired |
| 530 | if ( $expired < time() ) { |
| 531 | do_action('auth_cookie_expired', $cookie_elements); |
| 532 | return false; |
| 533 | } |
| 534 | |
| 535 | $user = get_user_by('login', $username); |
| 536 | if ( ! $user ) { |
| 537 | do_action('auth_cookie_bad_username', $cookie_elements); |
| 538 | return false; |
| 539 | } |
| 540 | |