Adding spaces in a variable - php

Question

Good evening
I created a while adding spaces in a variable . it's exactly what I need, but now I need to centralize the text between the spaces:
here is the code in PHP:
$psn = "ABCDEFGH";
$psnSize = strlen($psn);
while($psnSize <= 20)
{
$psn = $psn."&nbsp";
$psnSize++;
}
The max size is 20 characters, and I need all psn's have the same size (20 characters)
I'm getting the result but the spaces are added to the end of the text and now I want to distribute the spaces between the text to get it centralized.
Thank you so much.

Answer 1

You can use all native functions to achieve this:
function createLRPadding($str, $chars = 20)
{
# Count the length
$strlen = strlen($str);
# Don't do anything if you are at the max characters
if($strlen >= $chars)
return $str;
# Get left and right balance
$len = ($chars - $strlen) / 2;
# Create fills on the left and right of the string and implode them to make one string
return implode('', array_fill(0,round($len, 0, PHP_ROUND_HALF_UP),' ')).$str.implode('', array_fill(0,round($len, 0, PHP_ROUND_HALF_DOWN),' '));
}
To use:
echo createLRPadding('Cool string');
To adjust the padding, add a second parameter:
echo createLRPadding('Cool string', 40);
The first example (default 20 pad) will write:
Cool string