[eluser]Keat Liang[/eluser]
i found out which function might cause the error
under core/URI.php
Code:
/**
* Filter segments for malicious characters
*
* @access private
* @param string
* @return string
*/
function _filter_uri($str)
{
if ($str != '' && $this->config->item('permitted_uri_chars') != '' && $this->config->item('enable_query_strings') == FALSE)
{
// preg_quote() in PHP 5.3 escapes -, so the str_replace() and addition of - to preg_quote() is to maintain backwards
// compatibility as many are unaware of how characters in the permitted_uri_chars will be parsed as a regex pattern
if ( ! preg_match("|^[".str_replace(array('\\-', '\-'), '-', preg_quote($this->config->item('permitted_uri_chars'), '-'))."]+$|i", $str)) //this tricky tricky
{
show_error('The URI you submitted has disallowed characters.', 400);
}
}
// Convert programatic characters to entities
$bad = array('$', '(', ')', '(', ')');
$good = array('$', '(', ')', '(', ')');
return str_replace($bad, $good, $str);
}
//so i echo it out
echo echo "|^[".str_replace(array('\\-', '\-'), '-', preg_quote($this->config->item('permitted_uri_chars'), '-'))."]+$|i";
/*
i get this
|^[a-z 0-9~%\.\:_\-]+$|i
*/
don't perl syntax are look like this ??
Code:
/^[a-z 0-9~%\.\:_\-]+$/i
and i notice
_remove_url_suffix()
_explode_segments()
also use
update: after looking PHP documentation perl regular expression delimiter can be / # ~ (common one)
http://www.php.net/manual/en/regexp.refe...miters.php
