- define: documentation ( source)
<?php
define('TYPE_TEST1', 1 << 0);
define('TYPE_TEST2', 1 << 1);
define('TYPE_TEST3', 1 << 2);
define('TYPE_TEST4', 1 << 3);
define('TYPE_TEST5', 1 << 4);
$test = TYPE_TEST2 | TYPE_TEST4;
if ($test & TYPE_TEST1) {
echo "1!\n";
}
if ($test & TYPE_TEST2) {
echo "2!\n";
}
if ($test & TYPE_TEST3) {
echo "3!\n";
}
if ($test & TYPE_TEST4) {
echo "4!\n";
}
if ($test & TYPE_TEST5) {
echo "5!\n";
}