In-depth analysis of the underlying structure and framework of the dsp system

DSP (Demand-Side Platform) is the demand-side platform. This concept originated in Europe and the United States, where online advertising is developed. It is a newly emerging field of online advertising with the rapid development of the Internet and advertising industry. It quickly emerged in the United States together with Ad Exchange and RTB, and has developed rapidly around the world. In 2011, it has covered Europe, America, Asia Pacific and Australia. In the world of online display advertising, DSP is in the ascendant. DSP was introduced to China and quickly became a craze, becoming one of the driving forces for the rapid development of China's online display advertising RTB market. DSP will become an advertising model after SEM.
After my in-depth research, the method of dsp implementation mainly requires the cookie cross-domain technology.
Below I will demonstrate to you how to grab cookies across domains through the simplest code.
First you have to make an interface on the website -.-. I use php. .

<code><span><span><?php</span><span>$search</span> = <span>$_COOKIE</span>[<span>"search"</span>];
<span>//echo $search; </span><span>switch</span> (<span>$search</span>)
{
<span>case</span><span>"study"</span>:
    <span>$img</span> = <span>'study.gif'</span>;
    <span>echo</span><span>'<img src="'</span>.<span>$img</span>.<span>'" alt="图片" />'</span>;
  <span>//echo "study hard plz~";</span><span>break</span>;
<span>case</span><span>"domain"</span>:
    <span>$img</span> = <span>'domain.gif'</span>;
    <span>echo</span><span>'<img src="'</span>.<span>$img</span>.<span>'" alt="图片" />'</span>;
  <span>//echo "buy domain plz~";</span><span>break</span>;
<span>case</span><span>3</span>:
  <span>echo</span><span>"Number 3"</span>;
  <span>break</span>;
<span>default</span>:
  <span>echo</span><span>"并没有cookie"</span>;
}


<span>?></span></span></code>

This interface is used to determine the cookies of this website. Then display the ads that customers (browser users) need to see.
So how to save?
You need to add

<code><span><?</span>php setcookie(<span>"search"</span>,<span>"study"</span>, <span>time</span>()+<span>3600</span>*<span>24</span>*<span>30</span>);<span>?></span></code>

to your website to determine the needs of users. for future calls.
But how can I see the cookies of my website through other websites?
Here I recommend that you use the iframe tag.
Directly call the interface remotely.
Cookies can also be called.

<code><span><<span>iframe</span><span>runat</span>=<span>"server"</span><span>src</span>=<span>"http://php.hiimac.com/dsp/showad.php"</span><span>width</span>=<span>"120"</span><span>height</span>=<span>"270"</span><span>frameborder</span>=<span>"no"</span><span>border</span>=<span>"0"</span><span>marginwidth</span>=<span>"0"</span><span>marginheight</span>=<span>"0"</span><span>scrolling</span>=<span>"no"</span><span>allowtransparency</span>=<span>"yes"</span>></span><span></<span>iframe</span>></span></code>

Don’t worry, everyone. I'd better open source this set of programs on github. . .
Then give you a test address. Test it first.
Test address: dsp system
Github open source address: Open source dsp system

Copyright statement: Uh. . . If you want to plagiarize, there is nothing I can do to stop you. .

The above has introduced an in-depth analysis of the bottom layer and framework of the dsp system, including aspects of it. I hope it will be helpful to friends who are interested in PHP tutorials.