Zero-pad digits in string

php zero-pad
Giles picture Giles · Nov 27, 2008 · Viewed 108.9k times · Source

I need to cast single figures (1 to 9) to (01 to 09). I can think of a way but its big and ugly and cumbersome. I'm sure there must be some concise way. Any Suggestions

Answer

Konrad Rudolph picture Konrad Rudolph · Nov 27, 2008

First of all, your description is misleading. Double is a floating point data type. You presumably want to pad your digits with leading zeros in a string. The following code does that:

$s = sprintf('%02d', $digit);

For more information, refer to the documentation of sprintf.

Related questions

In PHP, how do I add to a zero-padded numeric string and preserve the zero padding?

If I have a variable in PHP containing 0001 and I add 1 to it, the result is 2 instead of 0002. How do I solve this problem?

Read More
How do I check if a string contains a specific word?

Consider: $a = 'How are you?'; if ($a contains 'are') echo 'true'; Suppose I have the code above, what is the correct way to write the statement if ($a contains 'are')?

Read More
Get the full URL in PHP

I use this code to get the full URL: $actual_link = 'http://'.$_SERVER['HTTP_HOST'].$_SERVER['PHP_SELF']; The problem is that I use some masks in my .htaccess, so what we see in the URL is not always …

Read More