wp-includes/class-pop3.php:585$msgNumoptional"" function delete ($msgNum = "") { // Flags a specified msg as deleted. The msg will not // be deleted until a quit() method is called. if(!isset($this->FP)) { $this->ERROR = "POP3 delete: " . _("No connection to server"); return false; } if(empty($msgNum)) { $this->ERROR = "POP3 delete: " . _("No msg number submitted"); return false; } $reply = $this->send_cmd("DELE $msgNum"); if(!$this->is_ok($reply)) { $this->ERROR = "POP3 delete: " . _("Command failed ") . "[$reply]"; return false; } return true; }Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/class-pop3.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.