我目前正在使用http://photomatt.net/scripts/randomimage来显示随机背景图片。我想根据窗口或div宽度自动重新缩放这些图像(动态?)。这甚至可能吗?如果你有时间和能力,代码将是不可思议的。 :)
提前致谢!
以下是您方便使用的当前随机图片代码:
<?php
// Make this the relative path to the images, like "../img" or "random/images/".
// If the images are in the same directory, leave it blank.
$folder = '';
// Space seperated list of extensions, you probably won't have to change this.
$exts = 'jpg jpeg png gif';
$files = array(); $i = -1; // Initialize some variables
if ('' == $folder) $folder = './';
$handle = opendir($folder);
$exts = explode(' ', $exts);
while (false !== ($file = readdir($handle))) {
foreach($exts as $ext) { // for each extension check the extension
if (preg_match('/\.'.$ext.'$/i', $file, $test)) { // faster than ereg, case insensitive
$files[] = $file; // it's good
++$i;
}
}
}
closedir($handle); // We're not using it anymore
mt_srand((double) microtime()*1000000); // seed for PHP < 4.2
$rand = mt_rand(0, $i); // $i was incremented as we went along
header('Location: '.$folder.$files[$rand]); // Voila!
答案 0 :(得分:0)
好吧,我可能会采用javascript方法。
伪码:
var body = document.getElementsByTagName('body')[0];
var img = document.createElement('img');
img.src = 'random_image.php';
img.style.display = 'none';
img.onload = function(){
// modify the background styles based on your own conditions
};
body.appendChild(img);
如果你真的想要花哨,可以绑定到窗口重新调整大小的事件,并根据可见的屏幕大小,浏览器窗口大小等继续更改随机图像。