示例：
字符串截取法直线导轨滑台
|
1
2
3
4
5
6
7
|
/** * 中间加密 字符串截取法
*/
public static function encryptTel($tel) {
$new_tel = substr($tel, 0, 3).‘****‘.substr($tel, 7);
return $new_tel;
} |
替换字符串
|
1
2
3
4
5
6
7
|
/** * 中间加密 替换字符串的子串
*/
public static function encryptTel($tel) {
$new_tel = substr_replace($tel, ‘****‘, 3, 4);
return $new_tel;
} |
正则
|
1
2
3
4
5
6
7
|
/** * 中间加密 用正则
*/
public static function encryptTel($tel) {
$new_tel = preg_replace(‘/(\d{3})\d{4}(\d{4})/‘, ‘$1****$2‘, $tel);
return $new_tel;
} |