laravel-excel

set_time_limit(0);
$list = TraceKeyword::select(DB::raw('keyword,sum(pv) as pv,sum(uv) as uv,sum(ip) as ip,sum(reg) as reg'))
->groupBy('keyword')    
->orderBy('uv', 'desc')
->get();

$newList[] = [    '关健字', 'PV', 'UV', 'IP', '报名人数', '转换率'];
foreach ($list as $item) {    
  $newList[] = [        
    str_replace('=', '', $item->keyword),        
    $item->pv,        
    $item->uv,        
    $item->ip,        
    $item->reg,        
    percentageRatio($item->reg, $item->uv)    
  ];
}
\Excel::create('搜索词信息-' . Carbon::now()->toDateString(), function ($excel) use ($newList) {    
  $excel->sheet('keyword', function ($sheet) use ($newList) {        
    $sheet->rows($newList);    
  });
})->download('xlsx');<br></br>

导出约1万条，还是可以。但是超级一万就出错了，有什么优代方案吗？