DB::replace PHP Method

    public static function replace()
    {
        $args = func_get_args();
        return call_user_func_array(array(DB::getMDB(), 'replace'), $args);
    }

 /**
  * Update IconMap.
  * @param array $iconMaps
  * @return array
  */
 public function update(array $iconMaps)
 {
     if (USER_TYPE_SUPER_ADMIN != self::$userData['type']) {
         self::exception(ZBX_API_ERROR_PERMISSIONS, _('Only Super Admins can update icon maps.'));
     }
     $iconMaps = zbx_toArray($iconMaps);
     $iconMapids = zbx_objectValues($iconMaps, 'iconmapid');
     $updates = [];
     $duplicates = [];
     foreach ($iconMaps as $iconMap) {
         if (!check_db_fields(['iconmapid' => null], $iconMap)) {
             self::exception(ZBX_API_ERROR_PARAMETERS, _s('Incorrect parameters for icon map update method "%s".', $iconMap['name']));
         }
         if (isset($iconMap['name'])) {
             if (zbx_empty($iconMap['name'])) {
                 self::exception(ZBX_API_ERROR_PARAMETERS, _s('Icon map name cannot be empty.'));
             } elseif (isset($duplicates[$iconMap['name']])) {
                 self::exception(ZBX_API_ERROR_PARAMETERS, _s('Cannot create icon maps with identical name "%s".', $iconMap['name']));
             } else {
                 $duplicates[$iconMap['name']] = $iconMap['name'];
             }
         }
     }
     $this->validateMappings($iconMaps, false);
     $iconMapsUpd = API::IconMap()->get(['iconmapids' => $iconMapids, 'output' => API_OUTPUT_EXTEND, 'preservekeys' => true, 'selectMappings' => API_OUTPUT_EXTEND]);
     $oldIconMappings = [];
     $newIconMappings = [];
     foreach ($iconMaps as $iconMap) {
         if (!isset($iconMapsUpd[$iconMap['iconmapid']])) {
             self::exception(ZBX_API_ERROR_PARAMETERS, _s('Icon map with iconmapid "%s" does not exist.', $iconMap['iconmapid']));
         }
         // Existence
         if (isset($iconMap['name'])) {
             $iconMapExists = $this->get(['filter' => ['name' => $iconMap['name']], 'output' => ['iconmapid'], 'editable' => true, 'nopermissions' => true, 'preservekeys' => true]);
             if (($iconMapExists = reset($iconMapExists)) && bccomp($iconMapExists['iconmapid'], $iconMap['iconmapid']) != 0) {
                 self::exception(ZBX_API_ERROR_PARAMETERS, _s('Icon map "%s" already exists.', $iconMap['name']));
             }
         }
         if (isset($iconMap['mappings'])) {
             $mappingsDb = $iconMapsUpd[$iconMap['iconmapid']]['mappings'];
             foreach ($mappingsDb as $mapping) {
                 $oldIconMappings[] = $mapping;
             }
             foreach ($iconMap['mappings'] as $mapping) {
                 $mapping['iconmapid'] = $iconMap['iconmapid'];
                 $newIconMappings[] = $mapping;
             }
         }
         $iconMapid = $iconMap['iconmapid'];
         unset($iconMap['iconmapid']);
         if (!empty($iconMap)) {
             $updates[] = ['values' => $iconMap, 'where' => ['iconmapid' => $iconMapid]];
         }
     }
     DB::save('icon_map', $iconMaps);
     DB::replace('icon_mapping', $oldIconMappings, $newIconMappings);
     return ['iconmapids' => $iconMapids];
 }