Mask credit card number in PHP
I have credit card number which I want to mask as below:
$cc = 1234123412341234
echo cc_masking($cc)
1234XXXXXXXX1234
function cc_masking($number) {.....}
Please suggest the regular expression for this.
This should work using substr:
function ccMasking($number, $maskingCharacter = 'X') {
return substr($number, 0, 4) . str_repeat($maskingCharacter, strlen($number) - 8) . substr($number, -4);
}
You can use substr_replace
$var = '1234123412341234';
$var = substr_replace($var, str_repeat("X", 8), 4, 8);
echo $var;
Output
1234XXXXXXXX1234