作者:姜漂亮真可爱w0 | 来源:互联网 | 2018-03-20 12:11
1. [代码]制作随机字符串
';
$chars = join("",array_merge(range("a","z"),range("A","Z"),range("0","9")));
$chars = str_shuffle($chars);
echo $chars;
foreach (range(0, 12) as $number) {
echo $number,'
';
}
?>
2. [代码]利用GD库制作验证码
3. [代码]效果测试