0未从数值前面剥离

Question

I am working on a project for a friend's website which is suppose to generate completely random phone numbers to be displayed on a "fake" review board. I figured the best way to do with would be for me to to generate out each section separably. So 3-3-4, but no matter what I do, every time there is a 0 in front the code cuts it off. Here's an example of what I mean:

http://www.shiningashes.net/Test.php

yet this is what I have for the code:

<?php
for ($i = 0000; $i <= 9999; $i++) {
echo $i;
echo "<br>";
}
?>

How do I get the 0's to stop being cropped out so the 0's display? 0001, 0021, 0123, etc?

Answer 1

You can use str_pad

for ($i = 0; $i <= 9999; $i++) {
   echo str_pad($i, 4, '0', STR_PAD_LEFT);
   echo "<br>";
}