Joe Harman wrote:
Hello,
I need to replace all the numbers of a credit card except for the last
4 with an 'X' ... can't seem to locate the string function for this...
can someone point me in the right direction here to what php item i
should be using.
that'll be:
string php_replace_all_but_last_four_chars_of_creditcard_number(string input[,
string pad_string])
actually that func doesn't exist - what you need to do (well its one way to do
it)
is use a combination of substr() and str_pad() e.g:
echo str_pad(substr($cc, -4), 20, 'X', STR_PAD_LEFT);
where $cc is the previously checked/verified/sanitized creditcard no.
and 20 is the length of a creditcard no. - forgive me if I'm wrong about the CC
number length, I don't have a creditcard.
Thanks!
Joe
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