Adding variable number of zeroes to make a six digit number

Question

I am working with a membership database which records all accounts in a six digit format however, some users will be using a sub-six digit format due to older conventions. So I want to be able to accept a sub-six digit number and prefix zeroes to the beginning of it.

e.g. user enters number 1234, I want PHP to format it to become 001234. user enters number 123, I want PHP to format it to become 000123.

Answer 1

$padded_num = str_pad($num, 6, 0, STR_PAD_LEFT);

Padded numbers must be represented as strings for output.

Answer 2

You can use str_pad function:

str_pad($number, 6, "0", STR_PAD_LEFT);

Answer 3

You can use PHPs sprintf()-function:

$formattedNumber = sprintf('%06d', $unformattedNumber);

Answer 4

You can try sprintf

<?php
$id= sprintf("%06d", $id);
?> 

Answer 5

$new_num = str_pad($Num, 6, "0", STR_PAD_LEFT);

Answer 6

Too Easy

str_pad($input, 6, "0", STR_PAD_LEFT);