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package handle
import (
"strings"
"unicode/utf8"
)
// Phone
// @description: 脱敏规则: 手机号
// @param src string: 待处理字符串
// @param placeholder string: 占位符
// @return dst string: 脱敏后的数据
func Phone(src, placeholder string) (dst string) {
// 不足7位，直接返回
if utf8.RuneCountInString(src) <= 7 {
return src
}
// 取前三位和后四位
dst = src[:3] + strings.Repeat(placeholder, utf8.RuneCountInString(src)-7) + src[len(src)-4:]
return