I just found this thread: http://forum.phpwebgallery.net/viewtopi … 70&p=1 where I found how to get at the metadata.  Slowly, I learn! :-)
part of the metadata.php output:

no IPTC information

EXIF Fields in sample.jpg

Array
(
    [FileName] => sample.jpg
    [FileDateTime] => 1229315052
    [FileSize] => 182652
    [FileType] => 2
    [MimeType] => image/jpeg
    [SectionsFound] => ANY_TAG, IFD0, THUMBNAIL, COMMENT, EXIF, INTEROP, MAKERNOTE
    [COMPUTED] => Array
        (
            [html] => width="800" height="600"
            [Height] => 600
            [Width] => 800
            [IsColor] => 1
            [ByteOrderMotorola] => 0
            [CCDWidth] => 1mm
            [ApertureFNumber] => f/3.5
            [UserComment] => 
            [UserCommentEncoding] => UNDEFINED
            [Thumbnail.FileType] => 2
            [Thumbnail.MimeType] => image/jpeg
        )

    [Make] => Canon
    [Model] => Canon PowerShot G9
    [Orientation] => 1
    [XResolution] => 124/1
    [YResolution] => 124/1
    [ResolutionUnit] => 2
    [DateTime] => 2008:12:12 21:27:06
    [YCbCrPositioning] => 1
    [Exif_IFD_Pointer] => 184
    [THUMBNAIL] => Array
        (
            [Compression] => 6
            [XResolution] => 180/1
            [YResolution] => 180/1
            [ResolutionUnit] => 2
            [JPEGInterchangeFormat] => 3508
            [JPEGInterchangeFormatLength] => 2935
        )

    [COMMENT] => Array
        (
            [0] => Putting it back together, and trying to figure out where the two leftover screws should have gone.
        )

So, apparently it is called "comment" not caption.  Or UserComment?  Or COMMENT?  Or what?  I'm confused.  I tried "Comment" and "UserComment" instead of "Caption" in the show-exif-fields part.  No comment-related field shows up in the Synchronize window, however, so I'm not doing that right.

When I tried adding to use-exif-mapping:

$conf['use_exif_mapping'] = array(
  'date_creation' => 'DateTimeOriginal',
  'caption' => 'UserComment'                               //changed.  line added. pwg blew up
  );

The gallery blew up rather spectacularly.  (At that point the show_exif_fields did have " 'UserComment',").  So, obviously, that line is necessary for something to happen.  It just needs to be right ... :D

Sorry to be barging in with English in a French thread.  I can understand French, but you wouldn't want to read my attempts at writing it!  :-(

I've been struggling with the caption issue and getting nowhere.  I must be doing something stupid wrong, and I hope one of you can tell me what it is.

This is the metadata part of my config_local.inc.php (with commented lines mostly removed):

// +-----------------------------------------------------------------------+
// |                               metadata                                |
// +-----------------------------------------------------------------------+

// show_iptc: Show IPTC metadata on picture.php if asked by user
//                        -------------------------not using IPTC -------------------
$conf['show_iptc'] = false;

$conf['show_iptc_mapping'] = array(
  'iptc_keywords'        => '2#025',
  'iptc_caption_writer'  => '2#122',
  'iptc_byline_title'    => '2#085',
  'iptc_caption'         => '2#120'
  );

$conf['use_iptc'] = false;

$conf['use_iptc_mapping'] = array(
  'keywords'        => '2#025',
  'date_creation'   => '2#055',
  'author'          => '2#122',
  'name'            => '2#005',
  'comment'         => '2#120'
  );

// show_exif: Show EXIF metadata on picture.php (table or line presentation
// avalaible)                         ---------------using EXIF-----------------------
$conf['show_exif'] = true;  

$conf['show_exif_fields'] = array(
  'Caption',
//  'Make',                               // changed.  these 3 commented out, 'Caption' added
//  'Model',
  'DateTimeOriginal',
//  'COMPUTED;ApertureFNumber'
  );

// use_exif: Use EXIF data during database synchronization with files
// metadata
$conf['use_exif'] = true;

// use_exif_mapping: same behaviour as use_iptc_mapping
$conf['use_exif_mapping'] = array(
  'date_creation' => 'DateTimeOriginal'
  );

I'm not sure what the database name for the "Caption" field is.  It says "Caption" in digikam, but who knows.  I have a feeling I should be adding something in the last "use-exif_mapping" section, but I don't know what. Also, even though DateTimeOriginal is not commented out, it also does not appear.  It says "NA" at the line for "Creation Date" under the picture.

Would I maybe be better off setting IPTC to "true" and trying to do this via IPTC metadata?

And is there any way to get the caption to appear ABOVE the picture rather than below?

Thanks for any help you can give me!

// +-----------------------------------------------------------------------+
// |                               metadata                                |
// +-----------------------------------------------------------------------+

// show_iptc: Show IPTC metadata on picture.php if asked by user
$conf['show_iptc'] = true;

// show_iptc_mapping : is used for showing IPTC metadata on picture.php
// page. For each key of the array, you need to have the same key in the
// $lang array. For example, if my first key is 'iptc_keywords' (associated
// to '2#025') then you need to have $lang['iptc_keywords'] set in
// language/$user['language']/common.lang.php. If you don't have the lang
// var set, the key will be simply displayed
//
// To know how to associated iptc_field with their meaning, use
// tools/metadata.php
$conf['show_iptc_mapping'] = array(
  'Légende'  => '2#120',
  'Ville'    => '2#090',
  'Pays'         => '2#101',
  'Photographe'        => '2#080'
  );

// use_iptc: Use IPTC data during database synchronization with files
// metadata
$conf['use_iptc'] = true;

// use_iptc_mapping : in which IPTC fields will PhpWebGallery find image
// information ? This setting is used during metadata synchronisation. It
// associates a phpwebgallery_images column name to a IPTC key
$conf['use_iptc_mapping'] = array(
  'caption'          => '2#120',
  'city'            => '2#090',
  'country'         => '2#101',
  'photographer'              => '2#080'
  );

// show_exif: Show EXIF metadata on picture.php (table or line presentation
// avalaible)
$conf['show_exif'] = false;

// show_exif_fields : in EXIF fields, you can choose to display fields in
// sub-arrays, for example ['COMPUTED']['ApertureFNumber']. for this, add
// 'COMPUTED;ApertureFNumber' in $conf['show_exif_fields']
//
// The key displayed in picture.php will be $lang['exif_field_Make'] for
// example and if it exists. For compound fields, only take into account the
// last part : for key 'COMPUTED;ApertureFNumber', you need
// $lang['exif_field_ApertureFNumber']
//
// for PHP version newer than 4.1.2 :
// $conf['show_exif_fields'] = array('CameraMake','CameraModel','DateTime');
//
$conf['show_exif_fields'] = array(
  'Make',
  'Model',
  'DateTimeOriginal',
  'COMPUTED;ApertureFNumber'
  );

// use_exif: Use EXIF data during database synchronization with files
// metadata
$conf['use_exif'] = false;

// use_exif_mapping: same behaviour as use_iptc_mapping
$conf['use_exif_mapping'] = array(
  'date_creation' => 'DateTimeOriginal'
  );

Et ouala

Tout bien vérifié c'est moi qui n'ai pas recopié l'intégralité du code à ce niveau là.
Dans le fichier config_local.inc.php tout va bien....

nedimimre a écrit:

$conf['show_exif_fields'] = array(

Je dirais bien qu'il manque quelque chose à la fin de la ligne ?

Bon allez je relance le dossier sur ce fil....

Voici donc après quelques recherches et tentatives ce que j'obtiens à la synchro des Métadonnées...
   

INSERT INTO phpwebgallery_images_1221298592261901
    (id,filesize,width,height,high_filesize,caption,city,country,photographer,date_metadata_update)
     VALUES('30','91','387','500',NULL,'OpŽration Chebec, manoeuvre Franco Marocaine simulant une intervention de sauvetage ˆ la suite d\'un sŽ•sme','Marseille','France','Nedim IMRE','2008-09-13 11:36:32')
    , ('29','133','500','329',NULL,'OpŽration Chebec, manoeuvre Franco Marocaine simulant une intervention de sauvetage ˆ la suite d\'un sŽ•sme','Marseille','France','Nedim IMRE','2008-09-13 11:36:32')
    , ('3','108','500','332',NULL,'OpŽration Chebec, manoeuvre Franco Marocaine simulant une intervention de sauvetage ˆ la suite d\'un sŽ•sme','Marseille','France','Nedim IMRE','2008-09-13 11:36:32')
    , ('2','56','500','332',NULL,'OpŽration Chebec, manoeuvre Franco Marocaine simulant une intervention de sauvetage ˆ la suite d\'un sŽ•sme','Marseille','France','Nedim

(J'ai effacé quelques lignes pour éviter une surcharge.....)

, ('78','135','500','335',NULL,'OpŽration Chebec, manoeuvre Franco Marocaine simulant une intervention de sauvetage ˆ la suite d\'un sŽ•sme','Marseille','France','Nedim IMRE','2008-09-13 11:36:32')
    , ('79','98','500','374',NULL,'OpŽration Chebec, manoeuvre Franco Marocaine simulant une intervention de sauvetage ˆ la suite d\'un sŽ•sme','Marseille','France','Nedim IMRE','2008-09-13 11:36:32')
;
[mysql error 1054] Champ 'caption' inconnu dans field list

  UPDATE phpwebgallery_images AS t1, phpwebgallery_images_1221298592261901 AS t2
    SET t1.filesize = t2.filesize
    , t1.width = t2.width
    , t1.height = t2.height
    , t1.high_filesize = t2.high_filesize
    , t1.caption = t2.caption
    , t1.city = t2.city
    , t1.country = t2.country
    , t1.photographer = t2.photographer
    , t1.date_metadata_update = t2.date_metadata_update
    WHERE t1.id = t2.id
  ;
[mysql error 1054] Champ 't1.caption' inconnu dans field list

De plus lorsque je clique sur le bouton pour afficher les IPTC rien ne se passe.

Pour info, au travaers de Local Files Editor j'ai passé les lignes concernées à :

$conf['show_iptc'] = false;

puis

$conf['show_iptc_mapping'] = array(
  'iptc_caption'  => '2#120',
  'iptc_city'    => '2#090',
  'iptc_country'         => '2#101',
  'iptc_photographer'        => '2#080'

Ensuite

$conf['use_iptc'] = true;

Suivit de

$conf['use_iptc_mapping'] = array(
  'caption'          => '2#120',
  'city'            => '2#090',
  'country'         => '2#101',
  'photographer'              => '2#080'

$conf['show_exif'] = false;

$conf['show_exif_fields'] = array(

$conf['use_exif'] = false;

Voilà j'espère que je présente bien le problème...

Si besoin je peux donner un accès à la galerie (qui est en 1.7.2...)

merci à Zorglub pour son témoignage

@ +

Oulà, dérapage (des 2 parties selon moi). On reprend ses esprits, on respire tranquillement, tout va bien :-)