Re: 404 error

From	Ed Mullen <ejEVOMER@edmullen.net>
Newsgroups	comp.lang.php
Subject	Re: 404 error
Date	2014-04-23 20:19 -0400
Organization	Altopia Corp. - Usenet Access - www.altopia.com
Message-ID	<7f6ase.25k.17.1@news.alt.net> (permalink)
References	(2 earlier) <7f2u7e.9ba.19.1@news.alt.net> <7f2ul5.eek.17.1@news.alt.net> <hKy5v.185051$YO.9754@fx03.iad> <7f5hrc.q8d.19.1@news.alt.net> <lj922f$ame$1@dont-email.me>

Show all headers | View raw

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@edmullen.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.

Thread

404 error Ed Mullen <ejEVOMER@edmullen.net> - 2014-04-22 12:41 -0400
  Re: 404 error Jerry Stuckle <jstucklex@attglobal.net> - 2014-04-22 12:58 -0400
    Re: 404 error Ed Mullen <ejEVOMER@edmullen.net> - 2014-04-22 13:25 -0400
      Re: 404 error Ed Mullen <ejEVOMER@edmullen.net> - 2014-04-22 13:32 -0400
        Re: 404 error Jerry Stuckle <jstucklex@attglobal.net> - 2014-04-22 14:35 -0400
        Re: 404 error Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2014-04-22 14:42 -0400
          Re: 404 error Jerry Stuckle <jstucklex@attglobal.net> - 2014-04-22 14:56 -0400
            Re: 404 error Anders Wegge Keller <wegge@wegge.dk> - 2014-04-23 08:56 +0200
              Re: 404 error Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2014-04-23 13:12 +0200
                Re: 404 error Anders Wegge Keller <wegge@wegge.dk> - 2014-04-23 13:23 +0200
                Re: 404 error Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2014-04-23 13:36 +0200
                Re: 404 error Jerry Stuckle <jstucklex@attglobal.net> - 2014-04-23 08:09 -0400
              Re: 404 error Jerry Stuckle <jstucklex@attglobal.net> - 2014-04-23 08:08 -0400
          Re: 404 error Ed Mullen <ejEVOMER@edmullen.net> - 2014-04-23 13:12 -0400
            Re: 404 error Jerry Stuckle <jstucklex@attglobal.net> - 2014-04-23 14:50 -0400
              Re: 404 error Ed Mullen <ejEVOMER@edmullen.net> - 2014-04-23 20:19 -0400
  Re: 404 error Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2014-04-22 23:26 +0200
    Re: 404 error Christoph Michael Becker <cmbecker69@arcor.de> - 2014-04-23 14:21 +0200
      Re: 404 error Jerry Stuckle <jstucklex@attglobal.net> - 2014-04-23 09:12 -0400
        SCRIPT_NAME (was: 404 error) Christoph Michael Becker <cmbecker69@arcor.de> - 2014-04-23 21:46 +0200
          Re: SCRIPT_NAME Jerry Stuckle <jstucklex@attglobal.net> - 2014-04-23 16:36 -0400
          Re: SCRIPT_NAME Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2014-04-24 00:27 +0200
            Re: SCRIPT_NAME Christoph Michael Becker <cmbecker69@arcor.de> - 2014-04-25 00:35 +0200
      Re: 404 error Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2014-04-23 15:56 +0200
        Re: 404 error Christoph Michael Becker <cmbecker69@arcor.de> - 2014-04-23 18:00 +0200
          Re: 404 error Christoph Michael Becker <cmbecker69@arcor.de> - 2014-04-23 21:38 +0200
  Re: 404 error Doug Miller <doug_at_milmac_dot_com@example.com> - 2014-04-22 22:04 +0000
    Re: 404 error The Natural Philosopher <tnp@invalid.invalid> - 2014-04-23 00:11 +0100
    Re: 404 error Ed Mullen <ejEVOMER@edmullen.net> - 2014-04-22 20:22 -0400
  Re: 404 error Ed Mullen <ejEVOMER@edmullen.net> - 2014-04-23 12:39 -0400
    Re: 404 error Ed Mullen <ejEVOMER@edmullen.net> - 2014-04-23 14:22 -0400
      Re: 404 error Denis McMahon <denismfmcmahon@gmail.com> - 2014-04-23 21:28 +0000

csiph-web