php-在回声中使用html时出错

I am using:

if (condition) {
    ..statements..
} else {
    echo '<div class="errormsgbox">'. $json->text.'</div>';
}

But I am getting the following error (I got this error after I restarted my web server, it was working fine before that):

Parse error: syntax error, unexpected 'errormsgbox' (T_STRING) in index.php on line 49

I don't think that I have put wrong syntax, what could be wrong?