Hi.
Not knowing a great deal about php - I am learning fast, but there's not a chance in hell I could wrirte my own script from scratch! - I scoured the net looking for a script that would display a random image on page open/refresh. This works great and is shown below.
<?php
$folder = '.';
$extList = array();
$extList['gif'] = 'image/gif';
$extList['jpg'] = 'image/jpeg';
$extList['jpeg'] = 'image/jpeg';
$extList['png'] = 'image/png';
$img = null;
if (substr($folder,-1) != '/') {
$folder = $folder.'/';
}
if (isset($_GET['img'])) {
$imageInfo = pathinfo($_GET['img']);
if (
isset( $extList[ strtolower( $imageInfo['extension'] ) ] ) &&
file_exists( $folder.$imageInfo['basename'] )
) {
$img = $folder.$imageInfo['basename'];
}
} else {
$fileList = array();
$handle = opendir($folder);
while ( false !== ( $file = readdir($handle) ) ) {
$file_info = pathinfo($file);
if (
isset( $extList[ strtolower( $file_info['extension'] ) ] )
) {
$fileList[] = $file;
}
}
closedir($handle);
if (count($fileList) > 0) {
$imageNumber = time() % count($fileList);
$img = $folder.$fileList[$imageNumber];
}
}
if ($img!=null) {
$imageInfo = pathinfo($img);
$contentType = 'Content-type: '.$extList[ $imageInfo['extension'] ];
header ($contentType);
readfile($img);
} else {
if ( function_exists('imagecreate') ) {
header ("Content-type: image/png");
$im = @imagecreate (100, 100)
or die ("Cannot initialize new GD image stream");
$background_color = imagecolorallocate ($im, 255, 255, 255);
$text_color = imagecolorallocate ($im, 0,0,0);
imagestring ($im, 2, 5, 5, "IMAGE ERROR", $text_color);
imagepng ($im);
imagedestroy($im);
}
}
?>
It requires me to put the script along with all the images I want to be displayed into a separate folder. I then put this as the image source in the html file:
"http://www.domain.com/Images/Random/random.php"
OK, so now I want to do something a little different. I have 3 images on a page, each representing a different category. I want all of the images to be randomly rotated on refresh, HOWEVER, I want the images still to be specific to the category. Now, I could set up 3 folders and place a php script in each and referrence the relevant script/folder from each image, but I'm thinking this could cause problems. Would it cause the page to run slower having to reference 3 different scripts?
Basically, is this what I should do, or is there a more efficient, streamlined way? 😕
I shall look forward to a reply.
