Description:
------------
When using PHP with a webserver, errors raised which are above E_WARNING should produce a HTTP 500 response which can then be captured by the webserver and handled accordingly.

Reproduce code:
---------------
<?php
echlo "Hello World"
?>

Expected result:
----------------
HTTP/1.x 500 Internal Server Error 
Content-type: text/html; charset=utf-8
PHP Parse error:  syntax error, unexpected T_CONSTANT_ENCAPSED_STRING in /var/www/error.php on line 2

<br />
<b>Parse error</b>:  syntax error, unexpected T_CONSTANT_ENCAPSED_STRING in <b>/var/www/error.php</b> on line <b>2</b><br />

Actual result:
--------------
PHP Parse error:  syntax error, unexpected T_CONSTANT_ENCAPSED_STRING in /var/www/error.php on line 2
Content-type: text/html; charset=utf-8

<br />
<b>Parse error</b>:  syntax error, unexpected T_CONSTANT_ENCAPSED_STRING in <b>/var/www/error.php</b> on line <b>2</b><br />