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Partially hides email address with PHP regex

I found two threads that at first seem to answer my query, but they only seem to be part of the solution to me. Using them, I got to where I am. So this is not a duplicate!

I want to replace everything except the first character in the name and domain part of an email address with an asterisk:

eg

g ****** @g ****. com or g ****** @g ****. co.uk

code:

$email2 = preg_replace('/(?<=.).(?=.*@)/', '*', $email);
$email3 = preg_replace('/(?<=@.)[a-zA-Z0-9-]*(?=(?:[.]|$))/', '*', $email2);

which almost exists, but gives me g ****** @g * .com , not g ****** @g *****. com

Can anyone help me with regex?

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2 answers


You can use:

$email = preg_replace('/(?:^|@).\K|\.[^@]*$(*SKIP)(*F)|.(?=.*?\.)/', '*', $email);

Demo version of RegEx



This will turn great@gmail.com

into g*****@g*****.com

and

myemail@gmail.co.uk

will become m*******@g*****.co.uk

and test.test@gmail.com

int*********@g*****.com

+3


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^.\K|.(?=.*@)|@.\K|\..*(*SKIP)(*F)|.(?=.*\.)

You can try this.Replace by. *

View demo.



https://regex101.com/r/mT0iE7/20

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