package main

import (
	"fmt"
	"regexp"
)

// 全局仅编译一次，全局复用，性能最优
//var pattern = `^1[3-9]\d{9}$`

// 更为严格的匹配
var pattern = `^1(3[0-9]|4[5-9]|5[0-35-9]|6[2567]|7[0-9]|8[0-9]|9[0-35-9])[0-9]{8}$`
var phoneRegex = regexp.MustCompile(pattern)

func main() {
	fmt.Println("合法手机号校验：", phoneRegex.MatchString("13812345678"))
	fmt.Println("非法手机号校验：", phoneRegex.MatchString("11111122222"))
}