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  1. <?php
  2.  
  3. $s = "example@gmail.com";
  4. $s = preg_replace_callback(
  5. 	"/([\w-]{2})([-a-z0-9]*)(@[\w-]+)/i", 
  6. 	function ($m) { return $m[1] . str_repeat("*", strlen($m[2])). $m[3]; }, 
  7. 	$s);
  8. echo $s;
Success #stdin #stdout 0.01s 82944KB
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stdin
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Standard input is empty
stdout
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ex*****@gmail.com
https://ideone.com/wBfqs5
language:
PHP (php 7.3.5)
created:
8 years ago
visibility:
secret

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