wp-includes/PHPMailer/POP3.php:463POP3 connection error handler.
$errnoint$errstrstring$errfilestring$errlineint protected function catchWarning($errno, $errstr, $errfile, $errline) { $this->setError( 'Connecting to the POP3 server raised a PHP warning:' . "errno: $errno errstr: $errstr; errfile: $errfile; errline: $errline" ); }Unchanged from 6.9.7 through 7.1.0.
Signature, return type and hooks compared across 3 parsed releases.
src/wp-includes/PHPMailer/POP3.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.