source: extensions/Photo_add_by/initpicture.php

<?php
// +-----------------------------------------------------------------------+
// | Photo added by plugin for Piwigo  by TEMMII                           |
// +-----------------------------------------------------------------------+
// | Copyright(C) 2012-2023 ddtddt               http://temmii.com/piwigo/ |
// +-----------------------------------------------------------------------+
// | This program is free software; you can redistribute it and/or modify  |
// | it under the terms of the GNU General Public License as published by  |
// | the Free Software Foundation                                          |
// |                                                                       |
// | This program is distributed in the hope that it will be useful, but   |
// | WITHOUT ANY WARRANTY; without even the implied warranty of            |
// | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU      |
// | General Public License for more details.                              |
// |                                                                       |
// | You should have received a copy of the GNU General Public License     |
// | along with this program; if not, write to the Free Software           |
// | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
// | USA.                                                                  |
// +-----------------------------------------------------------------------+

//Ajout du prefiltre
add_event_handler('loc_begin_picture', 'pabI', 55 );
function pabI(){
        global $template;
        $template->set_prefilter('picture', 'pabIT');
}

function pabIT($content){
  global $conf, $pwg_loaded_plugins;
        $search = '#<div id="'.$conf['Photo_add_by'].'" class="imageInfo">#';
  if (isset($pwg_loaded_plugins['manage_properties_photos'])){
        $replacement = '<div id="'.$conf['Photo_add_by'].'" class="imageInfo">';
  }else{
        $replacement = '
  {if $PAB}
  <div id="pab1" class="imageInfo">
    <dt>{\'Photo added by\'|@translate}</dt>
    <dd>{$PAB}</dd>
  </div>
{/if}
<div id="'.$conf['Photo_add_by'].'" class="imageInfo">';
  }
  return preg_replace($search, $replacement, $content);
 }

add_event_handler('loc_begin_picture', 'pab');

function pab(){
global $conf, $page, $template,$pwg_loaded_plugins;
load_language('plugin.lang', PAB_PATH);
load_language('lang', PHPWG_ROOT_PATH.PWG_LOCAL_DIR, array('no_fallback'=>true, 'local'=>true) );

  if ( !empty($page['image_id']) ){
    $query = 'select added_by FROM ' . IMAGES_TABLE . ' WHERE id = \''.$page['image_id'].'\';';
        $result = pwg_query($query);
        $row = pwg_db_fetch_assoc($result);
        $userab=$row['added_by'];
        
        $query = 'select '.$conf['user_fields']['username'].' AS username FROM ' . USERS_TABLE . ' WHERE '.$conf['user_fields']['id'].' = \''.$userab.'\';';
        $result = pwg_query($query);
        $row = pwg_db_fetch_assoc($result);
        $pab=$row['username'];
        
        $showpab = $conf['Photo_add_by_show'];
          if($showpab == 1 and (isset($pwg_loaded_plugins['see_photos_by_user']))){
                $query2 = 'SELECT UT.id, UT.username, COUNT(DISTINCT(IT.id)) AS PBU
                  FROM ' . USERS_TABLE . ' as UT
                  INNER JOIN '.IMAGES_TABLE.' AS IT ON IT.added_by = UT.id
                  INNER JOIN '.IMAGE_CATEGORY_TABLE.' AS ic ON IT.id = ic.image_id
                    '.get_sql_condition_FandF
                        (
                        array
           (
                   'forbidden_categories' => 'category_id',
                   'visible_categories' => 'category_id',
                   'visible_images' => 'id'
                   ),
                   'WHERE'
                   ).'
                   GROUP BY IT.added_by
           HAVING PBU >'.$conf['see_photos_by_user_nbphotos'].'
                   ORDER BY '.$conf['see_photos_by_user_order'].'
                   LIMIT '.$conf['see_photos_by_user_limit'].';';
                $result2 = pwg_query($query2);
                $userok = array();
                while ($row2 = pwg_db_fetch_assoc($result2)){
                  $userok[] = $row2['username'];
                }
                if(in_array($pab, $userok) and $showpab == 1 and (isset($pwg_loaded_plugins['see_photos_by_user']))){
                  $urlpab = get_root_url().'index.php?/user-'.$userab.'-'.$pab;
                  $pab2 ='<a href="'.$urlpab.'">'.$pab.'</a>';
                }else{
                  $pab2=$pab;
                }
          }else{
            $pab2=$pab;
          }
        $template->assign(array('PAB' => $pab2,));
  }
}

?>