mapscript map loading error

[cris ricana]

Hi Manfred!

Sorry, I haven't replied sooner. I have been away from the office for
a few days and had just got back to fix this problem.

I did what your new suggestions, with no success. But I returned to
the tmp folder and your suggestion if it is indeed readable and
writeable by apache and mapserver. I experimented on three locations
for my tmp-folder: in /var/www/tmp; in /usr/local/tmp; and
/usr/local/apache2/htdocs/tmp, making all three locations readable and
writeable. Then I used these three locations successively in the
IMAGEPATH line of the map file. I also made two versions of a html
file, one has CGI forms using mapserv and the other one has PHP
mapscripts extensions and tags.

Using the CGI html file, mapserv had successfully written images to
all three locations, but could only read/show the images from the
/usr/local/apache2/htdocs/tmp folder. Mapscript can read/write on
/usr/local/apache2/htdocs/tmp, but not on the other two.

Therefore, it seems that the matter is all about permissions of the
tmp-dir and the created images as well. To make these folders
readable/writable, I used "chmod 777", a command I'm not comfortable
using. Could there be safer way of doing these? I still don't know why
both mapserv and mapscript is ok with me using
/usr/local/apache2/htdocs/tmp, but not on the others. I had to admit
I'm not really a linx expert, so I probably am embarrassing myself
with these questions, so well... <smiles sheepishly>

Maricris



On 7/20/06, Manfred Meier <m.meier at spiekermann.de> wrote:
> Hello,
>
> some additional "ideas": (You know, I'm not a php man)
>
> - is in your php.ini display_errors set to "on", so that erors are
> shown? And are the errors and warnings activated?
>
> - you have this echo's in yout script as debug output. Can you insert an
> echo after each of these 3 lines too,
>  >        $map = ms_newMapObj($map_path);
>  >        $image=$map->draw();
>  >        $image_url=$image->saveWebImage();
> so that you ca see what the last executed statement is?
>
> Manfred
>
>
> cris ricana schrieb:
>
> > Hi!
> >
> > Here's the answer to your questions:
> >
> >> - is your tmp-dir writeable for the webserver?
> >
> >
> > Yes it is. I've tested my mapserver installation successfully using
> > CGI forms (the itasca samples, in particular) instead of PHP
> > /mapscript. These CGI webpages performs well and writes their images
> > in a temp folder I made (/usr/local/apache2/htdocs/tmp/).
> >
> >
> >> - if you look at the source-code for the html-page in your browser, does
> >> it show the correct url in the image tag?
> >
> >
> > The output in the browser (as well as the source code) is simply these
> > text:
> >
> > "php_mapscript.so loaded. /usr/local/apache2/htdocs/recipe1/hello.map"
> >
> > Which are text echoed from the php code (see my php code below) from
> > line 3 and 5. There are no lines for the image at all. Actually, I
> > added these text to locate where the problem is in my php code.
> > Otherwise, the output in the browser would be a blank page.
> >
> >
> > Regards,
> > Maricris
> >
> >
> >
> >
> >
> >
> > On 7/20/06, Manfred Meier <m.meier at spiekermann.de> wrote:
> >
> >> Hello,
> >>
> >> - is your tmp-dir writeable for the webserver?
> >> - if you look at the source-code for the html-page in your browser, does
> >> it show the correct url in the image tag?
> >>
> >> Manfred
> >>
> >>
> >> cris ricana schrieb:
> >>
> >> > Hello!
> >> >
> >> > I'd like some help in using PHP/Mapscript. I have a freshly installed
> >> > Mapserver machine and is testing some simple php webpages to see if
> >> > everything is working, especially PHP/Mapscript:
> >> >
> >> >    <?php
> >> >          dl ("php_mapscript.so");
> >> >          echo("php_mapscript.so loaded.\n");   //to see if the
> >> library will
> >> > sucessfully load.
> >> >          $map_path="/usr/local/apache2/htdocs/recipe1/hello.map";
> >> >          echo($map_path);                             // absolute path
> >> > to the map file
> >> >        $map = ms_newMapObj($map_path);
> >> >        $image=$map->draw();
> >> >        $image_url=$image->saveWebImage();
> >> > ?>
> >> > <HTML>
> >> > <HEAD>
> >> > <TITLE>Mapserver "hello world"</TITLE>
> >> > </HEAD>
> >> > <BODY>
> >> > <img SRC="<?php echo $image_url; ?>">
> >> > <p>This is the simplest example I could come up with.</p>
> >> > ...
> >> > </BODY>
> >> > </html>
> >> >
> >> > I'm using the following map file. It should produce an image with just
> >> > a line of text in it:
> >> >
> >> > MAP
> >> >        NAME HELLO
> >> >        STATUS ON
> >> >        EXTENT 0 0 4000 3000
> >> >        SIZE 400 300
> >> >        IMAGECOLOR 200 255 255
> >> >        WEB
> >> >                IMAGEPATH "/usr/local/apache2/htdocs/tmp/"
> >> >                IMAGEURL "/tmp/"
> >> >        END
> >> >
> >> >        LAYER
> >> >                NAME "credits"
> >> >                STATUS DEFAULT
> >> >                TRANSFORM FALSE
> >> >                TYPE ANNOTATION
> >> >                FEATURE
> >> >                        POINTS
> >> >                                200 150
> >> >                        END
> >> >                        TEXT 'Hello world.  Mapserver rocks.'
> >> >                END
> >> >                CLASS
> >> >                        LABEL
> >> >                                TYPE BITMAP
> >> >                                COLOR 0 0 0
> >> >                        END
> >> >                END
> >> >        END
> >> >
> >> > END
> >> >
> >> > The output I'm getting from the browsers is just the following:
> >> >
> >> >                 php_mapscript.so loaded.
> >> > /usr/local/apache2/htdocs/recipe1/hello.map
> >> >
> >> > So it seems that everything is working, but only until it encounters
> >> > the "$map = ms_newMapObj($map_path);" line. I've checked the tmp
> >> > folder I've made to store the images and no images are made (no
> >> > surprise there). Would somebody know what the problem might be and
> >> > what could be the solution for this? I really, really need to know.
> >> >
> >> > Thanks,
> >> > Maricris
> >> >
> >>
> >>
> >
>
>