<? if ($_GET['language'] == 'en') {
echo $en_t1;
} elseif ($_GET['language'] == 'ru') {
echo $ru_t1;
} else {
echo $ru_t1;
} ?>
<? $my_variable = if ($_GET['language'] == 'en') {
echo $en_t1;
} elseif ($_GET['language'] == 'ru') {
echo $ru_t1;
} else {
echo $ru_t1;
} ?>