diff options
Diffstat (limited to 'admin/include/functions.php')
| -rw-r--r-- | admin/include/functions.php | 196 |
1 files changed, 175 insertions, 21 deletions
diff --git a/admin/include/functions.php b/admin/include/functions.php index dc477f6d1..3a8c6b506 100644 --- a/admin/include/functions.php +++ b/admin/include/functions.php @@ -269,6 +269,14 @@ DELETE FROM '.IMAGE_CATEGORY_TABLE.' ;'; pwg_query($query); + // destruction of the links between images and tags + $query = ' +DELETE FROM '.IMAGE_TAG_TABLE.' + WHERE image_id IN ( +'.wordwrap(implode(', ', $ids), 80, "\n").') +;'; + pwg_query($query); + // destruction of the favorites associated with the picture $query = ' DELETE FROM '.FAVORITES_TABLE.' @@ -577,25 +585,6 @@ function date_convert_back( $date ) } /** - * returns an array with relevant keywords found in the given string. - * - * Keywords must be separated by comma or space characters. - * - * @param string keywords_string - * @return array - */ -function get_keywords($keywords_string) -{ - return - array_unique( - preg_split( - '/[\s,]+/', - $keywords_string - ) - ); -} - -/** * returns an array containing sub-directories which can be a category, * recursive by default * @@ -2094,6 +2083,173 @@ UPDATE } /** + * Set tags to an image. Warning: given tags are all tags associated to the + * image, not additionnal tags. + * + * @param array tag ids + * @param int image id + * @return void + */ +function set_tags($tags, $image_id) +{ + $query = ' +DELETE + FROM '.IMAGE_TAG_TABLE.' + WHERE image_id = '.$image_id.' +;'; + pwg_query($query); + + if (count($tags) > 0) + { + $inserts = array(); + foreach ($tags as $tag_id) + { + array_push( + $inserts, + array( + 'tag_id' => $tag_id, + 'image_id' => $image_id + ) + ); + } + mass_inserts( + IMAGE_TAG_TABLE, + array_keys($inserts[0]), + $inserts + ); + } +} + +/** + * Add new tags to a set of images. + * + * @param array tag ids + * @param array image ids + * @return void + */ +function add_tags($tags, $images) +{ + if (count($tags) == 0 or count($tags) == 0) + { + return; + } + + // we can't insert twice the same {image_id,tag_id} so we must first + // delete lines we'll insert later + $query = ' +DELETE + FROM '.IMAGE_TAG_TABLE.' + WHERE image_id IN ('.implode(',', $images).') + AND tag_id IN ('.implode(',', $tags).') +;'; + pwg_query($query); + + $inserts = array(); + foreach ($images as $image_id) + { + foreach ($tags as $tag_id) + { + array_push( + $inserts, + array( + 'image_id' => $image_id, + 'tag_id' => $tag_id, + ) + ); + } + } + mass_inserts( + IMAGE_TAG_TABLE, + array_keys($inserts[0]), + $inserts + ); +} + +function tag_id_from_tag_name($tag_name) +{ + global $page; + + if (isset($page['tag_id_from_tag_name_cache'][$tag_name])) + { + return $page['tag_id_from_tag_name_cache'][$tag_name]; + } + + if (function_exists('mysql_real_escape_string')) + { + $tag_name = mysql_real_escape_string($tag_name); + } + else + { + $tag_name = mysql_escape_string($tag_name); + } + + // does the tag already exist? + $query = ' +SELECT id + FROM '.TAGS_TABLE.' + WHERE name = \''.$tag_name.'\' +;'; + $existing_tags = array_from_query($query, 'id'); + + if (count($existing_tags) == 0) + { + mass_inserts( + TAGS_TABLE, + array('name', 'url_name'), + array( + array( + 'name' => $tag_name, + 'url_name' => str2url($tag_name), + ) + ) + ); + + $page['tag_id_from_tag_name_cache'][$tag_name] = mysql_insert_id(); + } + else + { + $page['tag_id_from_tag_name_cache'][$tag_name] = $existing_tags[0]; + } + + return $page['tag_id_from_tag_name_cache'][$tag_name]; +} + +function set_tags_of($tags_of) +{ + if (count($tags_of) > 0) + { + $query = ' +DELETE + FROM '.IMAGE_TAG_TABLE.' + WHERE image_id IN ('.implode(',', array_keys($tags_of)).') +;'; + pwg_query($query); + + $inserts = array(); + + foreach ($tags_of as $image_id => $tag_ids) + { + foreach ($tag_ids as $tag_id) + { + array_push( + $inserts, + array( + 'image_id' => $image_id, + 'tag_id' => $tag_id, + ) + ); + } + } + + mass_inserts( + IMAGE_TAG_TABLE, + array_keys($inserts[0]), + $inserts + ); + } +} + +/** * Do maintenance on all PWG tables * * @return nono @@ -2143,6 +2299,4 @@ function do_maintenance_all_tables() pwg_query($query); } - - ?> |