php隐藏手机号中间四位的方法:1、字符串截取法【$new_tel1=substr($tel, 0, 3).'****'.substr($tel, 7)】;2、替换字符串的子串【$new_tel=substr_replace($tel)】。

【相关学习推荐:php编程(视频)】

php隐藏手机号中间四位的方法:

$num = "12345678910"
$str = substr_replace($num,'****',3,4);

三种实现方式

<?php
$tel = '12345678910';
//1.字符串截取法
$new_tel1 = substr($tel, 0, 3).'****'.substr($tel, 7);
var_dump($new_tel1);
//2.替换字符串的子串
$new_tel2 = substr_replace($tel, '****', 3, 4);
var_dump($new_tel2);
//3.用正则
$new_tel3 = preg_replace('/(\\d{3})\\d{4}(\\d{4})/', '$1****$2', $tel);
var_dump($new_tel3);
?>

结果:

> string(11) "123****8910"
> string(11) "123****8910"
> string(11) "123****8910"

想了解更多编程学习,敬请关注php培训栏目!