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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 |
|---|---|
| 510 | // If registered more than two days ago, cancel registration and let this signup go through. |
| 511 | if ( $diff > 172800 ) |
| 512 | $wpdb->delete( $wpdb->signups, array( 'user_email' => $user_email ) ); |
| 513 | else |
| 514 | $errors->add('user_email', __('That email address has already been used. Please check your inbox for an activation email. It will become available in a couple of days if you do nothing.')); |
| 515 | } |
| 516 | |
| 517 | $result = array('user_name' => $user_name, 'orig_username' => $orig_username, 'user_email' => $user_email, 'errors' => $errors); |
| 518 | |
| 519 | return apply_filters('wpmu_validate_user_signup', $result); |
| 520 | } |
| 521 | |
| 522 | /** |
| 523 | * Processes new site registrations. |
| 524 | * |
| 525 | * Checks the data provided by the user during blog signup. Verifies |
| 526 | * the validity and uniqueness of blog paths and domains. |
| 527 | * |
| 528 | * This function prevents the current user from registering a new site |