foreach($cfg['cols'] as $c=>$col_cfg) {
$format = isset($col_cfg['color']) && isset($this->formats[$col_cfg['color']]) ? $this->formats[$col_cfg['color']] : false;
$worksheet->write($start_row, $c, @$col_cfg['header'],$format);
foreach($cfg['cols'] as $c=>$col_cfg) {
$format = isset($col_cfg['color']) && isset($this->formats[$col_cfg['color']]) ? $this->formats[$col_cfg['color']] : false;
$worksheet->write($start_row, $c, @$col_cfg['header'],$format);