Mask credit card number in PHP

Question

I have credit card number which I want to mask as below:

$cc = 1234123412341234

echo cc_masking($cc)

1234XXXXXXXX1234

function cc_masking($number) {.....}         


        

Answer 1

You can use substr_replace

$var = '1234123412341234';
$var = substr_replace($var, str_repeat("X", 8), 4, 8);
echo $var;

Output

1234XXXXXXXX1234