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<?php
class kolab_utils
{
const REQUEST_ANY = 0;
const REQUEST_GET = 1;
const REQUEST_POST = 2;
/**
* Read a specific HTTP request header
*
* @param string $name Header name
*
* @return mixed Header value or null if not available
*/
public static function get_request_header($name)
{
if (function_exists('getallheaders')) {
$hdrs = array_change_key_case(getallheaders(), CASE_UPPER);
$key = strtoupper($name);
}
else {
$key = 'HTTP_' . strtoupper(strtr($name, '-', '_'));
$hdrs = array_change_key_case($_SERVER, CASE_UPPER);
}
return $hdrs[$key];
}
/**
* Returns input parameter value.
*
* @param string $name Parameter name
* @param int $type Parameter type
* @param bool $allow_html Enable to strip invalid/unsecure content
*
* @return mixed Input value
*/
public static function get_input($name, $type = null, $allow_html = false)
{
if ($type == self::REQUEST_GET) {
$value = isset($_GET[$name]) ? $_GET[$name] : null;
}
else if ($type == self::REQUEST_POST) {
$value = isset($_POST[$name]) ? $_POST[$name] : null;
}
else {
$value = isset($_REQUEST[$name]) ? $_REQUEST[$name] : null;
}
return self::parse_input($value, $allow_html);
}
/**
* Input parsing.
*
* @param mixed $value Input value
* @param bool $allow_html Enable to strip invalid/unsecure content
*
* @return mixed Input value
*/
public static function parse_input($value, $allow_html = false)
{
if (empty($value)) {
return $value;
}
if (is_array($value)) {
foreach ($value as $idx => $val) {
$value[$idx] = self::parse_input($val, $allow_html);
}
}
// remove HTML tags if not allowed
else if (!$allow_html) {
$value = strip_tags($value);
}
return $value;
}
/**
* Make sure the string ends with a slash
*/
public static function slashify($str)
{
return self::unslashify($str).'/';
}
/**
* Remove slash at the end of the string
*/
public static function unslashify($str)
{
return preg_replace('/\/$/', '', $str);
}
}
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