Use PHP to implement banner rotation program code

The original content of this site. for reprinted content, please indicate the source webpage. We once visited such a website and randomly changed every time we refreshed the banner. in this article, we will introduce you to using PHP to implement this function. The principle of the procedure is: call an array, each image corresponds to an element in an array, and then we set a random number, as long as the original content of the site is randomly obtained, reprinted please indicate the source Webpage Tutorial network.

We once visited such a website and randomly changed every time we refreshed the banner. in this article, we will introduce you to using PHP to implement this function.

Procedure

Program Implementation principle: call an array, each image corresponds to an element in an array, then we set a random number, as long as a random data can be displayed a pair of images.

The first step is to generate a random number. Each time we refresh, we get different random numbers. the specific code is:

Srand (float) microtime () * 10000000 );

Then we set an array to image, and then set five array elements. the code is as follows:

$ Image [1] = '/location/of/image1.jpg ';

$ Image [2] = '/location/of/image2.jpg ';

$ Image [3] = '/location/of/image3.jpg ';

$ Image [4] = '/location/of/image4.jpg ';

$ Image [5] = '/location/of/image5.jpg ';

The following code randomly selects an element from the array:

$ Rn = array_rand ($ image );

Then we will display a random image:

Echo '';

Combine the above code.

Srand (float) microtime () * 10000000 );

$ Image [1] = '/location/of/image1.jpg ';

$ Image [2] = '/location/of/image2.jpg ';

$ Image [3] = '/location/of/image3.jpg ';

$ Image [4] = '/location/of/image4.jpg ';

$ Image [5] = '/location/of/image5.jpg ';

$ Rn = array_rand ($ image );

Echo '';

The above code is the code for randomly displaying images. if we want to add a connection address for each image, we can modify the above code slightly! Change the preceding array to a two-dimensional array:

$ Image [1] ['Pic '] ='/location/of/image1.jpg ';

$ Image [1] ['link'] = '/location/of/link1.php ';

The corresponding display code is:

Echo '';

Echo '';

Then we can complete our title function, randomly display images and connect them to different specified addresses:

Srand (float) microtime () * 10000000 );

$ Image [1] ['Pic '] ='/location/of/image1.jpg ';

$ Image [1] ['link'] = '/location/of/link1.php ';

$ Image [2] ['Pic '] ='/location/of/image2.jpg ';

$ Image [2] ['link'] = '/location/of/link2.php ';

$ Image [3] ['Pic '] ='/location/of/image3.jpg ';

$ Image [3] ['link'] = '/location/of/link3.php ';

$ Image [4] ['Pic '] ='/location/of/image4.jpg ';

$ Image [4] ['link'] = '/location/of/link4.php ';

$ Image [5] ['Pic '] ='/location/of/image5.jpg ';

$ Image [5] ['link'] = '/location/of/link5.php ';

$ Rn = array_rand ($ image );

Echo '';

Echo '';

You can copy the above code to your webpage to run it. Good luck