Temporary store image in php only while displaying on web page
I want to fetch images from other site and display on my site. I want to store that images in my side temporary only at time of showing on page , so that user think ima开发者_C百科ges are coming from my site.is it possible? How? Thanks in advance.
ex:-
imagine there are some graphs generated in a server (some network monitoring graphs like smokeping )and those graphs are stored in a folder as .png format.
ex:- imagine_this_url_has_a_graph (but this is just a page)
so that user want to show those graphs in another web site.
A simple caching system would do this. Given an HTML file like:
<body>
<img src="imagesource.php?file=1" />
</body>
You could create your image data source (imagesource.php) like:
<?php
$files = array(
'http://somesite.com/image_to_cache.gif',
'http://somesite.com/image_to_cache2.gif'
);
if(!isset($_REQUEST['file']) || !isset($files[$_REQUEST['file']])) {
header('HTTP/1.0 404 Not Found');
exit;
}
// do we already have the cached file?
$requested_file = $files[$_REQUEST['file']];
$cache_dir = '/tmp/cached_images';
$cache_file = md5($requested_file);
$cache_path = $cache_dir . '/' . $cache_file;
header('Content-Type: image/gif');
if(file_exists($cache_path)) {
readfile($cache_path);
exit;
}
//need to create the cache.
$data = file_get_contents($requested_file);
file_put_contents($cache_path, $data);
echo $data;
This would cache the remote images locally if they haven't already been downloaded, and output them to the browser when requested.
When the request for an image is made against your server, simply use fopen() to open the remote image, and fpassthru() to pass it through.
use fileread() instead of fopen() if you want to output the image as it yours, otherwise, you will get an error.
加载中,请稍侯......
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