Online PHP editor | output for tCmE5

<?php set_error_handler(array('My_ToStringFixer', 'errorHandler')); error_reporting(E_ALL | E_STRICT); class My_ToStringFixer { protected static $_toStringException; public static function errorHandler($errorNumber, $errorMessage, $errorFile, $errorLine) { if (isset(self::$_toStringException)) { $exception = self::$_toStringException; // Always unset '_toStringException', we don't want a straggler to be found later if something came between the setting and the error self::$_toStringException = null; if (preg_match('~^Method .*::__toString must return a string value$~', $errorMessage)) throw $exception; } return false; } public static function throwToStringException($exception) { // Should not occur with prescribed usage, but in case of recursion: clean out exception, return a valid string, and weep if (isset(self::$_toStringException)) { self::$_toStringException = null; return ''; } self::$_toStringException = $exception; return ''; } } class My_Class { public function doComplexStuff() { throw new Exception('Oh noes!'); } public function __toString() { try { // do your complex thing which might trigger an exception return $this->doComplexStuff(); } catch (Exception $e) { // The 'return' is required to trigger the trick return My_ToStringFixer::throwToStringException($e); } } } $x = new My_Class(); try { echo $x; } catch (Exception $e) { echo 'Caught Exception! : '. $e; }