Question

How do I start a for-loop with 01 as opposed to 1? I’ve tried the below, but it doesn’t seem to work.

for ($i = 01; $i <= 12; $i++) {
    echo "<option value='$i'";
    if ($i == $post_response[expiremm]) { 
        echo " selected='selected'"; 
    }
    $month_text = date("F", mktime(0, 0, 0, $i+1, 0, 0, 0));
    echo ">$month_text</option>"; 
} 

Answer 1

You can’t really start an integer at 01, you will need to pad the value, probably using str_pad to prefix leading elements to a string:

$value = $i;
if ($i < 10) {
    $value = str_pad($i, 2, "0", STR_PAD_LEFT);
}

Note that for different unit types you will obviously need to alter the desired pad_length.