在循环PHP之外使用循环变量

$values = array();
for ($i = 0; $i < 10; $i++) {
    $values[] = $i;
}

echo "循环变量的值：";
print_r($values);

循环变量的值：Array ( [0] => 0 [1] => 1 [2] => 2 [3] => 3 [4] => 4 [5] => 5 [6] => 6 [7] => 7 [8] => 8 [9] => 9 )