track_errors not supported

[chrisgraham]

Test code..

@ini_set('track_errors','1'); // so $php_errormsg is available

foreach (NULL as $foo);

echo 'We found: "'.$php_errormsg.'"';

Zend returns this (running from console):

PHP Warning:  Invalid argument supplied for foreach() in /home/ocp/test/index.php on line 5
We found: "Invalid argument supplied for foreach()"

HPHP returns this (running from console):

HipHop Warning:  Invalid argument supplied for foreach()
HipHop Notice:  Undefined variable: php_errormsg
We found: ""

I particularly don't like "Undefined variable: php_errormsg" - it would be slightly better if php_errormsg simply stayed as the empty string.