function createNonceStr($len = 16){
$str = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz';
$noncestr = '';
for($i = 0; $i < $len; $i++){
$noncestr .= $str[rand(0,strlen($str) - 1)];
}
return $noncestr;
}
生成随机字符串32位
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转载自blog.csdn.net/dw5235/article/details/106359830
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