This is a strange problem but it happens enough that I wanted to ask.
For some reason, sometimes the browser will force a php page to download to the browser and it always comes up with 0 bytes.
Mind you, I'm not trying to force the download and I'm very familiar with headers and forcing files to download intentionally, what I'm talking about is an issue where the browser can't process the page and thus it spits it out as a forced download.
One Example: I've got phpMyAdmin 2.3.2 running on a PHP4 server and a PHP5 cloud server. On the PHP5 cloud server, if I click "browse" on a table it tries to spit out sql.php as a download and it comes out empty.
I know the details are vague and I don't expect a solution as much as some ideas in where to look or possibly if someone else has experienced the same thing.
BIZARRE UPDATE:
When the URL has the word "Select" in all caps it breaks.
Works:
phpmyadmin/sql.php?lang=en-iso-8859-1&server=1&db=371016_map_db&table=Data_Recovery&sql_query=Select
Breaks:
phpmyadmin/sql.php?lang=en-iso-8859-1&server=1&db=371016_map_db&table=Data_Recovery&sql_query=SELECT
Noodle that one!
ANSWER:
As it turns out, the words SELECT, UPDATE and INSERT (yes, all caps) are blocked words on The RackSpace cloud. You cannot pass these via a GET request, only POST.
However, if you change them to Select, Update and Insert they work just fine. Seems they are not blocking everything.
I have seen that when I'm trying to access a server to which I don't have a valid network route. For example, I set a tunnel proxy in Firefox, through ssh. Then try to connect to localhost - I get a download of a 0 byte PHP file.
The download is happening because it has an extension of PHP, with no content, and the server is not sending you a MIME type, so the browser doesn't know how to handle it, and reverts to a download.
Sounds like a server misconfiguration.
PS. stop using PHP 4.
In my experience this sometimes comes with a segmentation fault of the webserver, due to php scripts behaving badly (the foo(){foo();} kind of crash)
segmentations faults are logged in the apache error log.
Related
I have some php (php 7.4) program that is connected to a Webserver that causes problems when I do not use a VPN.
Sadly, we just using the server without any rights to config it.
So if you need something specific I can ask for this Information.
There are some Serverinformations
DB-Server
Server-Type: MariaDB
Server-Version: 10.4.20 MariaDB - MariaDB Server
Webserver
Apache/2.4.37(centos)
PHP-Ext: mysqli, curl, mbstring
PHP-Version: 7.3.20
phpinfo():
PHP 7.4.18
Other People testing the program getting same results.
My php program is working flawlessly with VPN and local.
Now here is the issue:
It is some straight-forward program. You need to answer the questions to get further and after some time you can end the program. A Survey, you can start it by typing the URL in any Browser you find.
#Thats bringing me to this point#
Program interrupts randomly (no specific site or element) while work through. Leaving TimeOut Website and deprecated non-js Modules console-message. Apparently things are deprecated.
#Now I use VPN#
Program does not interrupt at any point. This procedure is working for every Person testing the Program. This means, I do not get the message "deprecated non-js modules".
Either things are not deprecated or there are other reasons making the Program work without timeout.
Error-Code
Website
ERR_CONNECTION_TIMED_OUT
Console of Chrome
VM9:7146 crbug/1173575, non-JS module files deprecated.
My Doings and Ideas:
I checked the whole Program for deprecated elements, tags, functions...
-> Using PHPStorm and:
ini_set('display_errors', 1)
ini_set('display_startup_errors', 1)
error_reporting(E_ALL)
-> There were something. Every used deprecated something could be replaced easily. Lucky me.
IP-Adress is stable while working through the program.
Program is working local. Tested it 50 times without any interruptions.
Program is working with VPN. Tested it...
Session variables expire after 6 hours.
classic mysqli_connect.
session cookies.
using css and js files.
using other php files for configs and better organisation.
####New Facts
I tested some other php program (more complex - needed to add "preventDefault()" to make it work for Chrome/Safari). Using same files and every function of the contaminated php program. And no timeouts without VPN.
-> Now I think it is the specific program. But why? There is nothing new in use.
Differences:
The corrupted program shows some text and answer options you need to click to get to the next site. Website timeouts occur randomly when I press the radio button to send the value.
New program shows also some text and these answer options. But you can interact with it. After you press the radio button, you get pictures and buttons which are telling you what to do. I added a simple event handler (js) to show these pictures and buttons and hide em (depends on the condition the program gives you). It is using the same functions to send values, present pictures/texts, hop to the next page. It has generally more pages, therefore more texts, pictures.
The VPN I use must be very close to the server. But cannot tell for sure. It is something like an university-vpn to access specific things.
Tested it with handy-network (5G). No timeouts! I asked people to test it, so we get some stability-statistics.
It is important that people (not only me) outside this vpn-network can access the program and end it successfully!
Can you show me some lead I can follow?
Thank you. :)
I solved my problem, contacting the server-support.
Firewall rules are very strict and blacklisted people who are testing the program with >1 click per second. Apparently that is the behavior of a bot.
That explains also the working other php-program, which uses same functions, files, everything. There, you couldn't be faster than 1 click per second because you need to wait for some elements to show you what to do before sending produced values.
Special thanks to ADyson! :)
This is a continuation of a tumbleweed question:
Getting Forbidden error when saving pages with PHP
The host my client uses seems to use something to check/block potentially malicious scripts from being saved to the server. When I try to save a file that uses any PHP, it comes back Forbidden.
Mostly it's just include(), and usually just one or two.
Anyone know of a way to safely keep my PHP intact when updating files via POST/PHP?
(I don't really need it to be able to add additional PHP, just keep what's in it.)
P.S. :: It works locally, just not on their host server.
I've been looking for days and haven't found a solution yet :/
I am trying to move a website from one server to another. However, when I try to access this website in a browser it only downloads a 1kb file called "download." What could be causing this? The original site has SSL certificates as well as a lot of code written in php, sql, json, ajax, etc.
This question was closed as "not a real question" but I did not have time to respond to the comments. If this is a simple answer then, by all means, please give me the answer. *I have moved all files from the old server to the new server using an ftp client. All of the files have moved successfully. When try to login to the base page, or go to the index.php page, all that happens is a 1kb download titled "download" begins and ends. This file has no extension and is not able to be opened. * This problem has also occurred over multiple hosting companies as I have been trying to move this site for two weeks now.
I have had a similar problem before.
Try opening the "download" file with a text editor (perhaps rename it to download.txt to make it easier to open)
Once you have opened the file you will probably see the source of index.php. This would indicate that it is due to a misconfiguration of your server, possibly due to whoever set up the server of possibly due to your own .htaccess.
Firstly try deleting your .htaccess (some ftp clients may hide it). Does it work now?
If not try uploading a text file or image and checking if this file is being served, if not then there is something gravely wrong with the server config, probably not due to you.
If this does work then it is due to the PHP configuration, essentially the script is not being sent to PHP for processing, if this is the case then I would make sure PHP is installed and allowed on that server.
I keep getting this error:
No data received
Unable to load the webpage because the server sent no data.
Here are some suggestions:
Reload this webpage later.
Error 324 (net::ERR_EMPTY_RESPONSE): The server closed the connection without sending any data.
I know it's part of my script, but I don't know which part. It divides certain text into a few different files, and those files are being created, but it's also supposed to zip them, but it's not getting to that part, so I have a vague idea of the general area the problem is occurring. I know this entire question is lacking detail, but I'm hoping that someone who has more experience with PHP and who may have seen the error before would be able to tell me what's happening.
http://gyazo.com/12ba55613011a115bb7507040f4d3ddf
EDIT: It works on Firefox... How can it be different between browsers if it's server-side script?
Restart apache and mysql
service httpd restart
service mysqld restart
Hopefully this answer helps someone.
It's a Chrome thing: http://www.google.com/support/forum/p/Chrome/thread?tid=7d50c093bd4f8f6c&hl=en
I don't know if you've already solved this, if it's a different problem causing the same symptoms or whatever, but yesterday I noticed this same error on my development machine, running Apache+PHP+MySQL under Linux, when accessing my local phpMyAdmin:
http://localhost/phpMyAdmin
It was running fine until that day, and I realized that by the same time I changed some settings related to sessions in my php.ini.
The problem was caused by having session.save_handler set to user instead of files. So I switched back to
session.save_handler = files
and voilà... everything is working fine again.
Also be sure to have set the proper session.save_path. In my case, and probably in most Linux systems,
session.save_path = "/tmp"
Be sure to set the proper permissions to that directory, too. Mine is chmod'ed to 777.
A little late to the draw here, but I received this error while working on a local copy of a php project (on Chrome), and although Firefox loaded some parts of the pages, it was still throwing similar errors.
The really weird part was that if I commented out includes or a few functions it would load partially.
I got around it by restarting the local server. I was using MAMP. You can tell for sure that this is the issue if you're running MAMP by going to the home page - it'll likely throw the same error.
tail -f /opt/local/apache2/logs/error_log
(or wherever is your apache2 install..)
... Will likely help you to spot where the problem lies in your PHP script. At least it did for me when facing the same problem (No data received, whatever the browser).
I was getting this issue intermittently in Chrome. For me, reloading the page would get a successful (non-empty) response, but it would sometimes take up to 3 or 4 reloads of the page. To handle this, I added the $.when(), .done(), and .fail() jQuery functions to my AJAX request. If the request fell into the .fail() function, I ran the location.reload(); js command to get the page to reload. Otherwise, I called a function that did the rest of my page loading in the .done() function.
This has the potential to create an infinite loop with the page never receiving a successful AJAX response and continuing to reload forever. So only try out this method if this issue is intermittent. If you are unable to get a successful AJAX response at all, then this method will not work for you.
Let me start by saying PHP isn't my forte, I'm usually reluctant to try working with it because of problems exactly like this. The code works fine on my local machine under MAMP and on my server, but doesn't on the clients server :'(
So what am I trying to do, well - save an image from Flash onto the server, simple right?!
I'm using the method described on this site here: http://designreviver.com/tutorials/actionscript-3-jpeg-encoder-revealed-saving-images-from-flash/ but have made a small alteration so that instead of echoing the jpg causing the browser to download it locally, I do an fwrite and an fclose to save it to the server.
Here is my PHP:
I've dona a phpinfo() on my clients server and it's running 5.2.2 my host is running 5.2.11 I don't know if much can have changed in those 9 minor revisions?
I've also read another question on here which suggests making suer always_populate_raw_post_data is set to ON, but it's set to OFF on all of the server environments I've been testing in. I'm doing some XML saving using file_get_contents('php://input') which I've tried but failed to get working with images.
Any help would be gratefully received, I'm happy to post the AS3 as well but it's EXACTLY the same as example I've linked above and works locally. As far as I can tell the problem lies with the PHP.
Cheers.
Is there any reason you're using the HTTP_RAW_POST_DATA? If Flash is sending the file via the POST method, it'd be by far easier to use the $_FILES array. There'd be no need to fopen/fwrite, as the file's already been stuck into a temp dir by PHP. All you have to do is use [move_uploaded_file()][1] to put it wherever you want on the server.