php自定义函数：生成新密码函数

2. //php生成新密码函数
3. function genPassword($min = 5, $max = 8)
4. {
5. $validchars="abcdefghijklmnopqrstuvwxyz123456789";
6. $max_char=strlen($validchars)-1;
7. $length=mt_rand($min,$max);
8. $password = "";
9. for($i=0;$i
10. {
11. $password.=$validchars[mt_rand(0,$max_char)];
12. }
13. return $password;
14. }
15. echo "新密码：".genPassword()."
    ";
16. echo "新密码：".genPassword(5,10)."
    ";
17. ?>