PHP 8 digit number question

Question

How to make a number 8 digit as standard digit. The number will be get to a user id from database. Example

user_id = 1 // This should should be echo as 00000001
user_id = 11 // This should should be echo as 00000011
user_id = 111 // This should should be echo as 00000111

How can I code this? Please help thanks.

codaddict · Accepted Answer · 2011-03-31 05:28:59Z

2

You can use printf function with %08s as the format string:

printf("%08s",$user_id);

If you want to store the result back in the string you can use sprintf as:

$user_id = sprintf("%08s",$user_id);

The format specifier %08s says:

s : Interpret the argument as a string
8 : Print the string left justified within 8 alloted places
0 : Fill the unused places with 0

answered Mar 31, 2011 at 5:28

codaddict

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Mark Elliot · Accepted Answer · 2011-03-31 05:29:44Z

2

You could use printf:

printf("%08d", $user_id);

answered Mar 31, 2011 at 5:29

Mark Elliot

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yan · Accepted Answer · 2011-03-31 05:30:33Z

2

PHP has sprintf:

$user_str = sprintf("%08d", $user_id);
echo $user_str;

answered Mar 31, 2011 at 5:30

yan

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Shakti Singh · Accepted Answer · 2011-03-31 05:30:49Z

2

You can do with str_pad

   echo str_pad($user_id,8,'0',STR_PAD_LEFT);

answered Mar 31, 2011 at 5:30

Shakti Singh

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Chris McClellan · Accepted Answer · 2011-03-31 05:30:08Z

0

$user_id = str_pad($user_id, 8, "0", STR_PAD_LEFT);

answered Mar 31, 2011 at 5:30

Chris McClellan

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alex · Accepted Answer · 2011-03-31 05:32:23Z

0

function leadingZeroes($number, $paddingPlaces = 3) {
    return sprintf('%0' . $paddingPlaces . 'd', $number);
}

Source.

answered Mar 31, 2011 at 5:32

alex

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