~~~ function hideStar($str) { //用戶名、郵箱、手機賬號中間字符串以*隱藏 if (strpos($str, '@')) { $email_array = explode("@", $str); $prevfix = (strlen($email_array[0]) < 4) ? "" : substr($str, 0, 3); //郵箱前綴 $count = 0; $str = preg_replace('/([\d\w+_-]{0,100})@/', '***@', $str, -1, $count); $rs = $prevfix . $str; } else { $pattern = '/(1[3458]{1}[0-9])[0-9]{4}([0-9]{4})/i'; if (preg_match($pattern, $str)) { $rs = preg_replace($pattern, '$1****$2', $str); // substr_replace($name,'****',3,4); } else { $rs = substr($str, 0, 3) . "***" . substr($str, -1); } } return $rs; } ~~~ demo ~~~ $account = "phpfensi.com"; $email = "416148489@qq.com"; $phone = "18005152525"; <?php echo hideStar($account); ?> <?php echo hideStar($email); ?> <?php echo hideStar($phone); ?> ~~~