Code: Select all
function ValidEmail($email) {
if(preg_match("/^[a-zA-Z][\w\.-]*[a-zA-Z0-9_]@[a-zA-Z0-9][\w\.-]*[a-zA-Z0-9]\.[a-zA-Z][a-zA-Z\.]*[a-zA-Z]$/",$email)) {
return 1;
} else {
return 0;
}
} Create a random string of $size digits. Useful for registration codes, etc.
Code: Select all
function randomString($size) {
// Add any characters you want in your string to this line
$charset="abcdefghijklmnopqrstuvwyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890";
$string = "";
for($i=0; $i < $size; $i++) {
$string .= $charset[(mt_rand(0,(strlen($charset) -1)))];
}
return $string;
} Sometimes it's necessary to pass the session name and session ID to a script. This is especially useful when redirecting between secure and non-secure pages on the same site. However, it looks bad in the browser, and can be a security concern. This little snippet of code will remove the Session ID by redirecting the user to the same url, but eliminate the session information
Code: Select all
## Cleanup the session id from the url
$_session_name = session_name();
if(isset($_GET[$_session_name])) {
$_session_id = session_id();
$new_query_string = preg_replace("/$_session_name=$_session_id/",'',$_SERVER['QUERY_STRING']);
$redirect = $_SERVER['SCRIPT_URI']."?".$new_query_string;
header("Location: $redirect");
exit;
}