I believe error reporting is all turned on. If I move the offending line outside the script tag I do see the error.
As is, I get a blank page. If I view->source, I get the following. I'm assuming I don't see anything because the <script> tag stops the browser from displaying anything.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "
http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<head>
</head>
<body>
<script type="text/javascript"><br />
<font size='1'><table class='xdebug-error' dir='ltr' border='1' cellspacing='0' cellpadding='1'>
<tr><th align='left' bgcolor='#f57900' colspan="5"><span style='background-color: #cc0000; color: #fce94f; font-size: x-large;'>( ! )</span> Fatal error: Class 'XXXXXXXXXXXXXXXXXXXXXXXXXXX' not found in E:\WebSiteDevelopment\xampp173\xampplite\htdocs\test\www\test-php\index.php on line <i>8</i></th></tr>
<tr><th align='left' bgcolor='#e9b96e' colspan='5'>Call Stack</th></tr>
<tr><th align='center' bgcolor='#eeeeec'>#</th><th align='left' bgcolor='#eeeeec'>Time</th><th align='left' bgcolor='#eeeeec'>Memory</th><th align='left' bgcolor='#eeeeec'>Function</th><th align='left' bgcolor='#eeeeec'>Location</th></tr>
<tr><td bgcolor='#eeeeec' align='center'>1</td><td bgcolor='#eeeeec' align='center'>0.0011</td><td bgcolor='#eeeeec' align='right'>327328</td><td bgcolor='#eeeeec'>{main}( )</td><td title='E:\WebSiteDevelopment\xampp173\xampplite\htdocs\test\www\test-php\index.php' bgcolor='#eeeeec'>..\index.php<b>:</b>0</td></tr>
</table></font>