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How do I uniquely identify computers visiting my web site?
..., fingerprints changed quite
rapidly, but even a simple heuristic was usually able to guess when a fingerprint was an “upgraded” version of a previously observed browser’s
fingerprint, with 99.1% of guesses correct and a false positive rate of only
0.86%.
We discuss what privacy thr...
Relative URL to a different port number in a hyperlink?
...9 (replace your port as required)
<div>
<a href="http://<?php print
$_SERVER{'SERVER_NAME'}; ?>:8069"><img
src="images/example.png"/>Example Base (http)</a>
</div>
share
...
Try/Catch block in PHP not catching Exception
...s someone else in the same situation.
I had my exception in my namespace called A and the script was in a namespace called B. The problem was that I had A\MyException which equals (in PHP) \B\A\MyException (because my script is in the namespace called B!). All I had to do to fix it was to add backs...
C语言结构体里的成员数组和指针 - C/C++ - 清泛网 - 专注C/C++及内核技术
...问0x4的内存地址，不crash才怪。于是，你一定会有如下的问题：
1）为什么不是 13行if语句出错？f.a被初始化为空了嘛，用空指针访问成员变量为什么不crash？
2）为什么会访问到了0x4的地址？靠，4是怎么出来的？
3）代码中的...
PHP convert date format dd/mm/yyyy => yyyy-mm-dd [duplicate]
...
This is the most flexible solution to all date problems. How could i miss this for all the years. Thanks!
– Arne L
Oct 16 '19 at 12:11
add...
Is there a PHP Sandbox, something like JSFiddle is to JS? [closed]
... most sophisticated is:
http://3v4l.org/
It lets you test your code in all PHP versions starting from PHP4.
If you want something for your local environment, the Runkit extension aims to provide a PHP Sandbox:
Instantiating the Runkit_Sandbox class creates a new thread with its own scope an...
Sending email with PHP from an SMTP server
... you are sending an e-mail through a server that requires SMTP Auth, you really need to specify it, and set the host, username and password (and maybe the port if it is not the default one - 25).
For example, I usually use PHPMailer with similar settings to this ones:
$mail = new PHPMailer();
// ...
那些我印象深刻的建议和教诲 - 杂谈 - 清泛网 - 专注C/C++及内核技术
...弱点，真是人生的一大考验。有些人采取鸵鸟政策，假装问题不存在；有些人一看苗头不对就转移，避开心虚；还有些人打肿脸充胖子，掩盖心虚。总之，都是在躲，都是不健康的应对。
真正健康的方式是什么？是努力戒除情...
【BLE技术内幕】BLE技术揭秘 - 创客硬件开发 - 清泛IT论坛，有思想、有深度
...用send_LL(0x53,2402M)（注：2402M为信道频率）。这里还有一个问题，设备B怎么知道这个数据包是发给自己的还是其他人的，为此BLE引入access address概念，用来指明接收者身份，其中，0x8E89BED6这个access address比较特殊，它表示要发给周...
PHP + MySQL transactions examples
I really haven't found normal example of PHP file where MySQL transactions are being used. Can you show me simple example of that?
...