// Attempt to connect to LDAP server
$ldapconn = ldap_connect($ldaphost, $ldapport)
        or exit("Unable to connect to authentication server.");

// Need to manually set to LDAPv3
ldap_set_option($ldapconn, LDAP_OPT_PROTOCOL_VERSION, 3);
// Bind against the directory using the BINDDN
$ldapbind = ldap_bind($ldapconn, $binddn, $bindpw)
        or exit("Failed to bind to authentication server.");

// Search for matching user
$filter = "(&(objectClass=inetOrgPerson)(uid=$username))";
$searchresult = ldap_search($ldapconn, $basedn, $filter);

//Get the first matching user (there can't be duplicates so that's OK)
$info = ldap_first_entry($ldapconn, $searchresult);

// Get the DN of the matching user
$dn = ldap_get_dn($ldapconn, $info);

//Attempt to bind as the user
$ldapuserbind = ldap_bind($ldapconn, $dn, $escaped_password)
        or exit("ERROR: Unable to log user in.");

// Gets multi-dimensional array containing all user attributes
$userinfo = ldap_get_attributes($ldapconn, $info);

$username = ldap_get_values($ldapconn, $info, "uid");
$firstname = ldap_get_values($ldapconn, $info, "givenName");
$lastname = ldap_get_values($ldapconn, $info, "sn");
$email = ldap_get_values($ldapconn, $info, "mail");
$password = ldap_get_values($ldapconn, $info, "userPassword");