Replace last 4 with asterisks in PHP

Question

Hi there i am trying to hide the customers name and i wants to hide only the last 4 with asterisks currently i have this code but it hides the entire name after 4 digits but thats not what i want

$arr[$idx]['consignee']  = $row['consignee'];

i managed to hide the name using this code below but it hides all after 4

            $arr[$idx]['consignee'] = '1' > 0 ?
                                    sub_str($row['consignee'], '5') : $row['consignee'];

Any sample or suggestion please.

Some advice on a similar question: https://stackoverflow.com/a/43904214/2943403 — mickmackusa, Dec 24 '17 at 13:48

ArtisticPhoenix · Accepted Answer · 2017-12-24T12:59:30.957

1

Like this

 $arr[$idx]['consignee'] = preg_replace('/.{4}$/', '****',  $arr[$idx]['consignee']);

Try it here online

OR substr ( for those that think regx is overkill )

 $arr[$idx]['consignee'] = substr($arr[$idx]['consignee'], 0, -4).'****';

For testing

 $idx = 0;        
 $arr = [[
     'consignee' => 'someguy'
 ]];

 $arr[$idx]['consignee'] = substr($arr[$idx]['consignee'], 0, -4).'****';

 echo $arr[$idx]['consignee'];

Try it here online

edited Dec 24 '17 at 12:59

answered Dec 24 '17 at 12:38

ArtisticPhoenix

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It works, but regex is overkill here. – JJJ Dec 24 '17 at 12:41
What if the whole string is less than 4 characters? Preg_replace won't replace anything -- exposing the name. Just sayin' maybe adjust the quantifier. – mickmackusa Dec 24 '17 at 13:47

Replace last 4 with asterisks in PHP

1 Answers1