Request for a better error msg.

If the user disables cookies and changes the URL to
http://domain.tld/form.php?PHPSESSID=

Then the resulting Apache 1.3 error log reads:

PHP Warning:  session_start(): The session id contains illegal characters, valid characters are only a-z, A-Z and 0-9 in /zz/zzdomain/www/form.php on line 3

PHP Warning:  Unknown(): The session id contains illegal characters, valid characters are only a-z, A-Z and 0-9 in Unknown on line 0

PHP Warning:  Unknown(): Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/tmp_php/zzdomainzz) in Unknown on line 0



<?php
  session_start();
  @$ct= ++$_SESSION['count'];
  echo<<<EOF
[$ct]<br><form method="get">
See hidden input<input type="submit" name="submit" value="Test"></form>
<a href="$PHP_SELF?foo=bar">See new href</a>
EOF;
?>