如何在PHP中循环几个数字？

Question

I have a question to looping several numbers together.

I've tried to do with two function below:

for ($x=28; $x <= 31; $x++){
    echo $x.'<br>';
}

for($i=1; $i<6; $i++){
    echo $i.'<br>';
}

But I want the script with a single step like:

for(){
  // code
  for(){
     // code
  }
}

And the final result, I try to implement it on the input option:

<option>28</option>
<option>29</option>
<option>30</option>
<option>31</option>
<option>1</option>
<option>2</option>
<option>3</option>
<option>4</option>
<option>5</option>

Answer 1

Hi if need to print only

`<option>28</option>`
    <option>29</option>
    <option>30</option>
    <option>31</option>
    <option>1</option>
    <option>2</option>
    <option>3</option>
    <option>4</option>
    <option>5</option>
    <option>6</option>

then can use below code 
$start = 28;
$count = 31;

for ($x = $start; $x <=$count; $x++){
       echo '<option>'.$x.'</option>';

    if($x==31){
        $count=6;
         $x=0;

    }
}