Hi,
The error I posted about the other day, "PHP has encountered an
Access Violation at .", is recurring on an intermittent basis. I find that
once it starts occurring, it continues happening for about an entire day,
and then it mysteriously stops occurring again for a day or two.
I am running PHP on a commercial server at Hostway.com, so I
don't have the ability to reboot the server as a test. Nor do I think I have
the ability to check PHP error logs or ini files on my own. I've written to
Hostway support about the problem and am waiting for their reply, but I'm
afraid they might just tell me it's a programming problem they can't help me
with.
I have reduced the problem to a very simple script that shows it
occurs on a call to "file_get_contents()" on a URL. It can likewise occur on
calls to "simplexml_load_file()". Note that the problem is not directly
caused by these function calls because I can run scripts with those calls
over and over again until suddenly the error starts occurring without any
discernible cause. Even after the error does start occurring, it does not
occur when I call "file_get_contents()" on a file, only on a URL, but the
URL does not have to be valid, so the problem is not being caused by actual
data transfer in an open stream.
See below for the code that yields the problem, when the problem
is occurring, along with two example outputs from it, and with links to the
script running on the server so you can see the problem yourself, unless the
intermittency phase is that the error is not being generated at the moment
you try it! The second example shows that the problem occurs without
successfully opening a stream. It seems to me that this means the problem is
somewhere in the server that my script is running on, not caused by any
connection to another server.
An additional detail. The problem started happening after I
started using the Google Maps API to access data on mailing addresses via
calls of the form
simplexml_load_file("http://maps.google.com/maps/geo?output=xml&key="; .
GoogleKey . "&q=" . urlencode($sAnAddress));
I wonder if the problem is caused by something the calls to Google do to
affect the server over time, so that the error is not directly caused by any
single such call, but by the cumulative effect of hundreds of such calls in
some mysterious way.
Does anyone have any idea what is going on or how to test or
check things on the server to figure out what the problem is?
Stumped,
Marshall
==============================
<html>
<head>
<title>Test</title>
</head>
<body>
<?php
$sURL = $_GET['URL'];
echo('<p>Getting ' . $sURL . '<p>');
$sFileCont = file_get_contents('http://' . $sURL);
echo('<br>Dump:' . $sFileCont);
?>
</body>
</html>
==============================
Running this with various inputs, I get:
==============================
www.ennex.com/util/php/test.php?URL=www.Google.com
Getting www.Google.com
PHP has encountered an Access Violation at 0A0591E4
==============================
www.ennex.com/util/php/test.php?URL=www.BadURL.com
Getting www.BadURL.com
Warning: file_get_contents() [function.file-get-contents]:
php_network_getaddresses: getaddrinfo failed: No such host is known. In
D:\WWWRoot\ennex.com\www\util\php\test.php on line 11
PHP has encountered an Access Violation at 0A11B8D6
==============================
