I have this URL
www1.intranet.com/reportingtool.asp?settings=var&export = ok
There I can download a report. The file-name of the report includes a timestamp. e.g. 123981098298.xls and varies everytime I download it.
I want to have a script with this functions:
<?php
//Download the File
//rename it to **report.xls**
//save it to a specified place
?>
I don't have any idea after searching stackoverflow and googling on this topic :(
Is this generally possible?
The simplest scenario
You can download the report with file_get_contents:
$report = file_get_contents('http://www1.intranet.com/reportingtool.asp?...');
And save it locally (on the machine where PHP runs) with file_put_contents:
file_put_contents('/some/path/report.xls', $report);
More options
If downloading requires control over the HTTP request (e.g. because you need to use cookies or HTTP authentication) then it has to be done through cURL which enables full customization of the request.
If the report is large in size then it could be directly streamed to the destination instead of doing read/store/write in three steps (for example, using fopen/fread/fwrite).
This may not work depending on your security settings, but it's a simple example:
<?php
$file = file_get_contents('http://www1.intranet.com/reportingtool.asp?settings=var&export=ok');
file_put_contents('/path/to/your/location/report.xls', $file);
See file_get_contents and file_put_contents.
Related
Sorry if I did not get this title right.
I have in my server the redirect.php script that receives a URL passed by the client user, fetches the content using file_get_contents() function and them shows it to the user with echo() function.
The problem is when the user points directly to a PDF or JPG file in that URL and them the script shows the file contents as binary code.
When I set the code to recognize when the requested URL points directly to a downloadable file,
What should be the function or header to echo to the user so that his browser ask him to download the file insted of showing it?
Do I have to first put it into a file inside my server or can I do it directly from a command like file_get_contents()? If I can do that without writing it to my server, it would be a much better approuch.
I can't point directly to the server because some sites are blocked by my employee and the third party company that does this service thinks that StakExchenge sites are malicious and not constructive and were tegged as online communities like Facebook.
Try this:
$sourcefile = "http://www.myremotewebsite.com/myfile.jpg";
$destfile = "myfile.jpg";
copy($sourcefile, $destfile);
I have a function that uploads a file into a web storage and prior to saving the file on the storage system if the file is a pdf file i would like to determine how many pages a pdf file has.
Currently i have the following:
$pdftext = file_get_contents($path);
$num = preg_match_all("/\/Page\W/", $pdftext, $dummy);
return $num;
Where $path is the temporary path that i use with fopen to open the document
This function works at times but is not reliable. I know theres also this function
exec('/usr/bin/pdfinfo '.$pdf_file.' | awk \'/Pages/ {print $2}\'', $output);
But this requires the file to donwloaded on the server. Any ideas or suggestions to accomplish this?
PHP is a server-side language, meaning all processing happens on your server. There's no way for PHP to determine details of a file on the client side, it has no knowledge of it neither the required access to it.
So the answer to your question as it is now is: It's not possible. But you probably have a goal in mind why you want to check this, sharing this goal might help to get more constructive answers/suggestions.
As Oldskool already explained this is not possible with PHP on the client side. You would have to upload the PDF file to the server and then determine the amount of pages. There are libraries and command line tools that could accomplish this.
In case you don't want to upload the PDF file to the server (which seems to be the case here) you could use the pdf.js library. Now the client is able to determine the amount of pages in a PDF document on its own.
PDFJS.getDocument(data).then(function (doc) {
var numPages = doc.numPages;
}
There are other libraries as well but I'm not certain about their browser support (http://www.electronmedia.in/wp/pdf-page-count-javascript/)
Now you just submit the amount of pages from javascript to your php file that needs this information. In order to achive this you simply use ajax. In case you don't know ajax, just google it there are enough examples out there.
As a side note; Always remember to not trust the client. The client is able to modify the page count and send a completely different one.
For those of you running linux servers this actually is possible. You need the pdfinfo extension installed and using the function
$pages = exec('/usr/bin/pdfinfo '.$pdf_file.' | awk \'/Pages/ {print $2}\'', $output);
outputs the correct page number where $pdf_file is the temporary path on the server upon upload.
The reason it wasnt working for me was because i didnt have the PDFinfo installed.
like file upload there are
<?php
$_FILES['file']['tmp_name'];
$_FILES['file']['name'];
$_FILES['file']['size'];
$_FILES['file']['type'];
?>
now.
i have a file that is sitting on my other web server, and i want to get the name size and mime type of that file via url.. is this possible?..
i've alreay tried to use this code below. but it doesn't work
$url = "http://mydomain.com/myfile.rar";
filesize ( $url );
mime_content_type ( $url );
You can try native php function get_headers it's very fast way to read file data
You can't do it like this. The information you get when you use $_FILES is meta-information that is sent along with the file (and the size can even be calculated after the file is retrieved).
You cannot get this information like that, but you can download the actual file and inspect the header information to get that information. To do this, read about curl, which allows you to do HTTP requests to another server.
It might be possible to request just the headers, so you get the information without getting the file, which is obviously more efficient.
Another solution is to implement a file-info script on the other server that allows you to get the file info.
So you could request http://mydomain.com/fileinfo.php?file=myfile.rar. In fileinfo.php you can get all the file info of the given file and just echo it.
My site uses bookmarklets to gather data from external sites, kinda like Pinterest. I'm concerned about security and want to move the images the bookmarklet gathers from the doc root up one level. My script has some hefty security checks in place, but I want to add this as a last line of defense.
How do I access my images within my script? Obviously using ../userimages/id/image.jpg wont work. I'm using Apache.
Thanks!
Proxy the image
You would use a proxy script to feed the images through like the following example:
// open the file in a binary mode
$name = '../userimages/id/image.jpg';
$fp = fopen($name, 'rb');
// send the right headers
header("Content-Type: image/png");
header("Content-Length: " . filesize($name));
// you may like to set some cache headers here
// dump the picture and stop the script
fpassthru($fp);
exit;
This example is from the PHP manuals fpassthru() page. You would save this script somewhere in your servers document root/httpdocs folder.
"Spoofing" the URL to the image
The easiest way to give the PHP file the appearance of being an image file to a user/browser is to use Apaches mod_rewrite. Usually I use a URL structure something like this:
http://www.example.org/image-id/image.png
Where image-id is the unique identifier for that particular image. This way the file has the correct extensions of an image instead of .php.
Question about this helper http://codeigniter.com/user_guide/helpers/download_helper.html
If, for example, program.exe weights 4 GB, will it take a lot of PHP memory for reading and delivering that file?
$data = file_get_contents("/path/to/program.exe"); // Read the file's contents
$name = 'software.exe';
force_download($name, $data);
force_download function just set the proper HTTP headers to make the client's browser download the file. So, it won't open the file, just pass it's URL to the client.
Check the helper source code, if you need: https://bitbucket.org/ellislab/codeigniter-reactor/src/31b5c1dcf2ed/system/helpers/download_helper.php
Edit: I'd sugest creating your own version of the helper, and, instead of using strlen to get the file size, use the php function filesize, which takes only the file name as argument and returns the size in bytes.
More info, at http://www.php.net/manual/en/function.filesize.php
Yea... that could get... bad...
file_get_contents reads the entire contents of a file into a string. For large files, that can get, well, bad. I would look into readfile. Please remember too -- since CI automatically caches when you are loading a view, that means there will be no discernible benefit to readfile if it is used in a CI view. It would almost be better to handle this with an external script or by outputting directly from the controller and not calling the view at all.