| 5 bootstrap.inc | drupal_valid_http_host($host) |
| 6 bootstrap.inc | drupal_valid_http_host($host) |
| 7 bootstrap.inc | drupal_valid_http_host($host) |
| 8 bootstrap.inc | drupal_valid_http_host($host) |
Validate that a hostname (for example $_SERVER['HTTP_HOST']) is safe.
As $_SERVER['HTTP_HOST'] is user input, ensure it only contains characters allowed in hostnames. See RFC 952 (and RFC 2181). $_SERVER['HTTP_HOST'] is lowercased.
Return value
TRUE if only containing valid characters, or FALSE otherwise.
File
- includes/
bootstrap.inc, line 366 - Functions that need to be loaded on every Drupal request.
Code
<?php
function drupal_valid_http_host($host) {
return preg_match('/^\[?(?:[a-z0-9-:\]_]+\.?)+$/', $host);
}
?>