Hide numbers of a phone number - php

Question

How can I show and hide the some numbers of a phone number by replacing it with * like 0935***3256 by PHP?
EX:
09350943256 -> 0935***3256 09119822432 -> 0911***2432
09215421597 -> 0921***1597...
$number = '09350943256';
echo str_pad(substr($number, -4), strlen($number), '*', STR_PAD_LEFT);
Top php code result is as: *******3256 but i want result as: 0935***3256
How is it?

Answer 1

You could use substr and concat this way
to work for any $number with any number of n digit length
<?php
$number = "112222";
$middle_string ="";
$length = strlen($number);
if( $length < 3 ){
echo $length == 1 ? "*" : "*". substr($number, - 1);
}
else{
$part_size = floor( $length / 3 ) ;
$middle_part_size = $length - ( $part_size * 2 );
for( $i=0; $i < $middle_part_size ; $i ++ ){
$middle_string .= "*";
}
echo substr($number, 0, $part_size ) . $middle_string . substr($number, - $part_size );
}
The output if you make $number = "1" is * and if $number = "12" is *2 and for $number = "112222" is 11**22. and it goes on.

Answer 2

In short:
$phone = 01133597084;
$maskedPhone = substr($phone, 0, 4) . "****" . substr($phone, 7, 4);
// Output: 0113****7084

Answer 3

You can use substr_replace() function
<?php
$mobnum ="09350943256";
for($i=4;$i<7;$i++)
{
$mobnum = substr_replace($mobnum,"*",$i,1);
}
echo $mobnum;
?>

Answer 4

You can use substr() to fetch the first 4 and last 4, and add four * in the middle manually, and put it all together in a string.
$phone = "09350943256";
$result = substr($phone, 0, 4);
$result .= "****";
$result .= substr($phone, 7, 4);
echo $result;
The above would output
0935****3256
Live demo

Answer 5

<?php
$phone='05325225990';
function stars($phone)
{
$times=strlen(trim(substr($phone,4,5)));
$star='';
for ($i=0; $i <$times ; $i++) {
$star.='*';
}
return $star;
}
$result=str_replace(substr($phone, 4,5), stars($phone), $phone);
echo $result;
?>
0532*****90

Answer 6

Instead of doing the math of calculating indices, I suggest this „declarative“ solution:
<?php
$number='0123456789';
$matches=[];
preg_match('/(\\d{4})(\\d+)(\\d{4})/', $number, $matches);
$result=$matches[1].str_repeat('*',strlen($matches[2])).$matches[2];
print($result);
?>