simplexml_load_file --> HTTP request problem

Posted on 2008-10-24
Last Modified: 2012-08-14

I have a strange problem. I am using php to get data from a xml file.
It all worked, but suddenly it doesn't anymore. The XML url is correct.
Triple-checked the url.

Although the file used to work, when i made a copy of it and uploaded it, this error
also appeared. So my initial thought was that the (remote) server only allowed
this file to connect. My host has recently upgraded to php5.
BTW : allow_url_fopen = on.

Anyone with bright ideas? Thanks in advance.

I get  this error (replaced the urls with fake ones).:

Warning: simplexml_load_file( [function.simplexml-load-file]: failed to open stream: HTTP request failed! in /home/users/etc/file.php on line 42

Warning: simplexml_load_file() [function.simplexml-load-file]: I/O warning : failed to load external entity "" in /home/users/etc/file.php on line 42

Warning: Invalid argument supplied for foreach() in /home/users/etc/file.php on line 43
Question by:dwax
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
  • 4

Author Comment

ID: 22794934

Some more info: my ISP has  simplexml_load_file enabled.
Now i am thinking that the server where the XML is located has a user agent check of some sort,
if i acces the file via a browser it works, via .php it gives the error.


Expert Comment

ID: 22794942
Is it possible that due to the update the server doesn't allow a script to access the file (see the user_agent setting in php.ini).
Possible solution could be setting this manually:
user_agent=Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)

Expert Comment

ID: 22794957
You last reply wasn't there when I opened the thread. But we are thinking the same.
Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!


Author Comment

ID: 22795041
Thanks fourice:

I was looking into setting the user agent in the php file that calls the XML,
but how do i implement this in .php?

Something like this?
header("User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)");

Expert Comment

ID: 22795096
ini_set("user_agent","Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)");


Author Comment

ID: 22795355

Thanks, this:
header("User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)");

Also seemed to do the trick, BUT:

i found out that if the XML is big, the 404 just comes back.
Could it be that the host is limiting the amount of data or something like that?

Accepted Solution

fourice earned 250 total points
ID: 22798336
I doubt that a limit on the amount of data will give you a 404...
But just in case you could try adding:
ini_set("max_execution_time", 0);
ini_set("memory_limit", "10000M");

Author Comment

ID: 22948572
Whoopsidaisy, that does the trick!
Thanks fourice!

Featured Post

Resolve Critical IT Incidents Fast

If your data, services or processes become compromised, your organization can suffer damage in just minutes and how fast you communicate during a major IT incident is everything. Learn how to immediately identify incidents & best practices to resolve them quickly and effectively.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

I was working on a PowerPoint add-in the other day and a client asked me "can you implement a feature which processes a chart when it's pasted into a slide from another deck?". It got me wondering how to hook into built-in ribbon events in Office.
Many times as a report developer I've been asked to display normalized data such as three rows with values Jack, Joe, and Bob as a single comma-separated string such as 'Jack, Joe, Bob', and vice versa.  Here's how to do it. 
Explain concepts important to validation of email addresses with regular expressions. Applies to most languages/tools that uses regular expressions. Consider email address RFCs: Look at HTML5 form input element (with type=email) regex pattern: T…
The viewer will learn how to dynamically set the form action using jQuery.

734 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question