How format number value in php?

I want format number as style ‘00000’ ex:

$a=1 => $a2="00001"
$b=23 => $b2="00023"

How format number in php?

Answer

You should use str_pad : https://www.php.net/manual/en/function.str-pad.php

$formattedValue = str_pad($value, 6, "0", STR_PAD_LEFT);