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<?php function mailObfuscate($mail) { //every second character replace with * $mail = explode('@',$mail); $array = str_split($mail[0]); $control = 0; $ret = ''; foreach ($array as $char) { if ($control == 0) { $ret .= '*'; } else { $ret .= $char; } $control = !$control; } return $ret.'@'.$mail[1]; } echo mailObfuscate("realname_x123@gmail.com");
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.26, 8.4.1 - 8.4.14
*e*l*a*e*x*2*@gmail.com

preferences:
174.76 ms | 407 KiB | 5 Q