mask mail with Alternative words using php - php

Question

Mentioned below is a dummy Email ID say,
abcdefghij#gmail.com
How to mask this email ID partially using PHP?
Output i need as
a*c*e*g*i*#gmail.com
I have tried the below code, But it not works for below requirement
$prop=3;
$domain = substr(strrchr($Member_Email, "#"), 1);
$mailname=str_replace($domain,'',$Member_Email);
$name_l=strlen($mailname);
$domain_l=strlen($domain);
for($i=0;$i<=$name_l/$prop-1;$i++)
{
$start.='*';
}
for($i=0;$i<=$domain_l/$prop-1;$i++)
{
$end.='*';
}
$MaskMail = substr_replace($mailname, $start,2, $name_l/$prop).substr_replace($domain, $end, 2, $domain_l/$prop);

Answer 1

Give a try like this.
$delimeter = '#';
$mail_id = 'abcdefghij#gmail.com';
$domain = substr(strrchr($mail_id, $delimeter), 1);
$user_id = substr($mail_id,0,strpos($mail_id, $delimeter));
$string_array = str_split($user_id);
$partial_id = NULL;
foreach($string_array as $key => $val){
if($key % 2 == 0){
$partial_id .=$val;
}else{
$partial_id .='*' ;
}
}
echo $partial_id.$delimeter.$domain;

Answer 2

Here's a no loop approach to replace every second character of an email username with a mask.
Custom PHP function using native functions split, preg_replace with regex /(.)./, and implode:
echo email_mask('abcdefghi#gmail.com');
// a*c*e*g*i*k*#gmail.com
function email_mask($email) {
list($email_username, $email_domain) = split('#', $email);
$masked_email_username = preg_replace('/(.)./', "$1*", $email_username);
return implode('#', array($masked_email_username, $email_domain));
}
Regex Explanation:
The regular expression starts at the beginning of the string, matches 2 characters and captures the first of those two, replaces the match with the first character followed by an asterisk *. preg_replace repeats this throughout the remaining string until it can no longer match a pair of characters.

Answer 3

$mail='abcdefghij#gmail.com';
$mail_first=explode('#',$mail);
$arr=str_split($mail_first[0]);
$mask=array();
for($i=0;$i<count($arr);$i++) {
if($i%2!=0) {
$arr[$i]='*';
}
$mask[]=$arr[$i];
}
$mask=join($mask).'#'.$mail_first[1];
echo $mask;
Result is :
a*c*e*g*i*#gmail.com

Answer 4

Does it need to have that many asterisks?
It's so hard to read that way.
I will suggest you keep things simple.
Maybe something like this is 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
Here is the full code that is also in that Github link
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 );
}