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Re: 404 error [message #185645 is a reply to message #185643] Wed, 23 April 2014 18:50 Go to previous messageGo to previous message
Jerry Stuckle is currently offline  Jerry Stuckle
Messages: 2598
Registered: September 2010
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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?

--
==================
Remove the "x" from my email address
Jerry Stuckle
jstucklex(at)attglobal(dot)net
==================

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