php how can i hide a part of the email adress? - php

Question

i currently have this:
$value = preg_replace('#hotmail.com', '***********', $value);
$value = preg_replace('yahoo.com', '***********', $value);
$value = preg_replace('outlook.com', '***********', $value);
$value = preg_replace('mailinator.com', '***********', $value);
$value = preg_replace('live.com', '***********', $value);
$value = preg_replace('live.nl', '***********', $value);
but how can i show e email adress like this: juliankuit******** ?
email is: juliankuitert#hotmail.com
and without having to replace all the email providers like hotmail.com with *'s
thanks in advance!

Answer 1

echo preg_replace('/(?<=.).(?=.*#)/u','*','TestEmail#Google.com');
Will return
T********#Google.com

Answer 2

I'm using this function
function maskEmail($email, $minLength = 3, $maxLength = 10, $mask = "***") {
$atPos = strrpos($email, "#");
$name = substr($email, 0, $atPos);
$len = strlen($name);
$domain = substr($email, $atPos);
if (($len / 2) < $maxLength) $maxLength = ($len / 2);
$shortenedEmail = (($len > $minLength) ? substr($name, 0, $maxLength) : "");
return "{$shortenedEmail}{$mask}{$domain}";
}
This an example
echo maskEmail('abcdfghi#example.com'); // abcd***#example.com

Answer 3

My PhP is too rusty to put code example, but here's the logic I would use :
find # symbol index in string 2)
truncate string to X characters , X being the number found on step 1 minus a certain
number of characters (up to you to decide)
Add a certain amount of * to the string you obtained in step 2
Note that during step 2, if X <= 0, then the whole string should be replace by * characters

Answer 4

Sometimes its good to show the last character too.
I will suggest you keep things simple.
Maybe something like this is simple enough
https://github.com/fedmich/PHP_Codes/blob/master/mask_email.php
Masks an email to show first 3 characters and then the last character before the # sign
ABCDEFZ#gmail.com becomes
A*****Z#gmail.com
function mask_email( $email ) {
/*
Author: Fed
Simple way of masking emails
*/
$char_shown = 3;
$mail_parts = explode("#", $email);
$username = $mail_parts[0];
$len = strlen( $username );
if( $len <= $char_shown ){
return implode("#", $mail_parts );
}
//Logic: show asterisk in middle, but also show the last character before #
$mail_parts[0] = substr( $username, 0 , $char_shown )
. str_repeat("*", $len - $char_shown - 1 )
. substr( $username, $len - $char_shown + 2 , 1 )
;
return implode("#", $mail_parts );
}