php随机显示指定文件夹下的所有图片
时间：2021-07-01 10:21:17
帮助过：16人阅读
- # Init Array
- $files = array();
- # Get Folder
- if($_GET['folder']) {
- $folder = $_GET['folder'];
- } else {
- # Set Default Folder
- $folder = '/img/';
- }
- # Set Full Path
- $path = $_SERVER['DOCUMENT_ROOT'] . '/' . $folder;
- # Open Directory
- if($handle = opendir($path)) {
- # Loop Through Directory
- while(false !== ($file = readdir($handle))) {
- if ($file != "." && $file != "..") {
- if(substr($file, -3) == 'gif' || substr($file, -3) == 'png' || substr($file, -3) == 'jpg' || substr($file, -4) == 'jpeg') $files[count($files)] = $file;
- }
- }
- }
- # Close Handle
- closedir($handle);
- # Init Random
- $rand = rand(0, count($files)-1);
- # Check Header Type
- # GIF
- if(substr($files[$random], -3) == 'gif') header("Content-type: image/gif");
- # JPEG
- elseif(substr($files[$random], -3) == 'jpg') header("Content-type: image/jpeg");
- elseif(substr($files[$random], -4) == 'jpeg') header("Content-type: image/jpeg");
- # PNG
- elseif(substr($files[$random],-3) == 'png') header("Content-type: image/png");
- # Read File
- readfile($path . '/' . $files[$random]);
- ?>
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