PHP implements the Web browsing Footprint feature

/***

* Add content to cookies

*/

Public Function Addcookie ($content) {

$trace =cookie (' trace ');//Read the original value

if (!empty ($trace))

{

Get the value inside the cookie and cut it into an array with a comma

$history = Explode (', ', $_cookie[' trace ');

Inserts the item ID that is currently being browsed at the beginning of this array

Array_unshift ($history, $content);

Remove duplicate values in the array

$history = Array_unique ($history);

When the length of the array is greater than 5, the loop executes the code inside

while (count ($history) > 5)

{

POPs the last cell of the array until its length is less than or equal to 5

Array_pop ($history);

}

Write the array with a comma to the cookie and set its expiration time to one week

Cookie (' Trace ', implode (', ', $history), 3600 * 24*7);

}

Else

{

If the cookie is empty, the current browsed item ID is written to the cookie, which occurs only when the site is first browsed

Cookie (' Trace ', $content, 3600 * 24 * 7);

}

}

This article is from "Tiger Brother's Blog" blog, please be sure to keep this source http://7613577.blog.51cto.com/7603577/1567321

PHP implements the Web browsing Footprint feature