Displaying Random Image in Your Page
May 11, 2008
Displaying a random image in your page is cool & fun. It's also useful if you want to display random banners or such. Here it is:
<?php /** * random_img.php : * This script selects a random image from a specified * directory and outputs the image to browser. */ /* output selected image to browser */ function out2browser($filename) { list($width, $height, $type) = getimagesize($filename); switch($type) { case IMAGETYPE_PNG: $img = imagecreatefrompng($filename); header("Content-type: image/png"); imagepng($img); break; case IMAGETYPE_GIF: $img = imagecreatefromgif($filename); header("Content-type: image/gif"); imagegif($img); break; case IMAGETYPE_JPEG: $img = imagecreatefromjpeg($filename); header("Content-type: image/jpeg"); imagejpeg($img); break; } } /* change to your images directory */ $imgpath = "C:/www/img/avatar"; $images = array(); /* list images */ $files = scandir($imgpath); foreach($files as $file) { /* select only gif, jpg and png images */ $ext = substr($file, -4); if ($ext == '.gif' || $ext == '.jpg' || $ext == '.png') { $images[] = $file; } } /* select random image */ $val = rand(0, count($images) - 1); $img = $images[$val]; out2browser("$imgpath/$img"); ?>
The script above will display a random image from the specified directory. Use the script above in your <img> tag like this:
<img src="random_img.php" border="0" alt="my random image" />
Wanna see this script in action? Take a look at my avatar at the right side. The image is randomly selected every day. Come visit my site tomorrow and you'll see different avatar there.
Keywords: display random image, random banner, random avatar
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