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Re: 404 error [message #185651 is a reply to message #185645] Thu, 24 April 2014 00:19 Go to previous messageGo to previous message
Ed Mullen is currently offline  Ed Mullen
Messages: 11
Registered: January 2014
Karma:
Junior Member
Jerry Stuckle wrote:
> On 4/23/2014 1:12 PM, Ed Mullen wrote:
>> Lew Pitcher wrote:
>>> On Tuesday 22 April 2014 13:32, in comp.lang.php, "Ed Mullen"
>>> <ejEVOMER(at)edmullen(dot)net> wrote:
>>>
>>>> Ed Mullen wrote:
>>>> > Jerry Stuckle wrote:
>>>> >> On 4/22/2014 12:41 PM, Ed Mullen wrote:
>>>> >>> I have two sites on different hosts.
>>>> >>>
>>>> >>> Both use identical code to display a "last modified" message. The
>>>> >>> code
>>>> >>> is in a standard footer which is included (via PHP) on ever site
>>>> >>> page.
>>>> >>>
>>>> >>> I just noticed something odd. At my site <http://edmullen.net> it
>>>> >>> works
>>>> >>> just fine. The first link below shows a standard page with the
>>>> >>> footer
>>>> >>> message. The second will produce an error page since the link
>>>> >>> doesn't
>>>> >>> exist on the site. On the error page the date info is simply not
>>>> >>> displayed.
>>>> >>>
>>>> >>> <http://edmullen.net/index.php>
>>>> >>>
>>>> >>> <http://edmullen.net/bogus.php>
>>>> >>>
>>>> >>> Fine so far. The other site has different results.
>>>> >>>
>>>> >>> <http://guitarsnotguns.org/>
>>>> >>>
>>>> >>> <http://guitarsnotguns.org/rot.php>
>>>> >>>
>>>> >>> Notice the error message and incorrect date in the footer.
>>>> >>>
>>>> >>> I'm guessing it's a server configuration issue. Any thoughts?
>>>> >>>
>>>> >>> BTW, here's the PHP I use on both sites:
>>>> >>>
>>>> >>> <?php
>>>> >>> $current_file_name = ($_SERVER['REQUEST_URI']);
>>>> >>> $current_path = ($_SERVER['DOCUMENT_ROOT']);
>>>> >>> $full_name = $current_path.$current_file_name;
>>>> >>> $last_modified = filemtime($full_name);
>>>> >>> print("This page last changed: ");
>>>> >>> print(date("F j, Y - h:i A", $last_modified));
>>>> >>> ?>
>>>> >>>
>>>> >>> Thanks.
>>>> >>>
>>>> >>
>>>> >> If the file doesn't exist, how can you get its time?
>>>> >>
>>>> >
>>>> > Agreed. Not expecting to.
>>>> >
>>>> >> It looks like you're including your footer in the failing page, but
>>>> >> not
>>>> >> in the working one. This is not a PHP issue.
>>>> >>
>>>> >>
>>>> >
>>>> > The footer is in the two good links above. The failing pages above do
>>>> > not exist: They're links to a non-existant file. Hence the 404
>>>> > result.
>>>> >
>>>> > What I'm asking about is how the two hosts' servers handle it. The
>>>> > first displays the custom 404 page WITHOUT showing the date in the
>>>> > footer. No idea why.
>>>> >
>>>> > The second host shows the 404 page but throws an error where the "date
>>>> > modified" info should be. Obviously
>>>> >
>>>>
>>>> Oops. Hit send too fast.
>>>>
>>>> I was going to say that obviously there is something different about
>>>> the
>>>> servers set up.
>>>>
>>>> I agree, it's probably not a PHP issue. Just thought the smart folks
>>>> here might have an idea.
>>>
>>>
>>> My (semi-educated) guess:
>>>
>>> On edmullen.net, your php.ini file sets the error_reporting value to
>>> E_ERROR, while on guitarsnotguns.org, the php.ini file sets the
>>> error_reporting value to E_WARNING
>>>
>>> E_ERROR settings will halt execution of the php script; if
>>> filemtime($full_name) encounters a "file not found" error, the script
>>> stops, and does not execute the subsequent printf() statements.
>>>
>>>
>>> E_WARNING settings will not halt execution of the php script; if
>>> filemtime($full_name) encounters a "file not found" error, the script
>>> continues and tries execute the subsequent printf() statements.
>>>
>>> Compare the php.ini settings (both explicit and implicit-default) from
>>> both
>>> sites, especially the error_reporting and display_errors values, to
>>> see how
>>> you've set PHP to handle errors.
>>>
>>> HTH
>>>
>>
>> Indeed. When I do phpinfo on both hosts:
>>
>> edmullen.net - error_reporting = 22517
>> guitarsnotguns.org - error_reporting = 30711
>>
>> I haven't yet figured out how to get access to the php.ini file on
>> DreamHost, GNG's hosting service. Their documentation/help is somewhat
>> byzantine.
>>
>> Thanks, Lew.
>>
>> P.S. Googled and found that if I put this in the custom error pages as
>> the first line in "include" script it stops the error. The date is
>> still wrong but that's less annoying.
>>
>> <?php error_reporting(22517); ?>
>>
>>
>>
>
> If you INSIST on using this footer, good programming requires you to
> check for the presence of the file (see file_exists) before calling
> filemtime(). If it doesn't exist, don't call filemtime and don't
> display the time.
>
> But why even include the footer in you error page?
>

Indeed, see my other reply in this thread.


--
Ed Mullen
http://edmullen.net/
As I said before, I never repeat myself.

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