Simple Ad Rotation Script

In this script (very easy script), we setup 3 ads for rotation. First ad, we want it to display 70%, second ad we want to display 20% and the last one we want to display 10%

What to do

1. Random number 1-100
  • if result = 1-70 (we have opportunity to display ad1, 70%)
  • if result = 71-90 (we have opportunity to display ad2, 20%)
  • if result = 91-100 (we have opportunity to display ad3, 10%)


In this script, we use rand(1, 100); to random number between 1 -100 and keep the result in variable named "$result_random" if result = 85 ad2 will be displayed.



// random number 1 - 100 $result_random = rand(1, 100);

// if result less than or equal 70, display ad1 (70%)
if($result_random <= 70){
echo "Display ad1";

// if result less than or equal 90, display ad2 (20%)
else if($result_random <= 90){
echo "Display ad2";

// if result less than or equal 100, display ad3 (10%)
else {
echo "Display ad3";


Similar Post

Get the width and height of an image using a function in PHP

PHP provides a function to get the width and height of an image. The getimagesize() function will determine the size of image file including flash file(swf).

PHP Counter script tutorial

Creates your own counter script. Using a basic knowledge of php + mysql script and keeps your visitors number to database for analysis.