php中多个数组合并为一个数组

array_merge() 函数把两个或多个数组合并为一个数组。
如果键名有重复，该键的键值为最后一个键名对应的值（后面的覆盖前面的）。如果数组是数字索引的，则键名会以连续方式重新索引。

例如：

 $news=M('news');	
  $sql="select count(a.news_id) as count_news,a.menu_id,b.pid from news a left join menu b on a.menu_id=b.menu_id where a.is_pass=0 group by a.menu_id ;";
  $count=$news->query($sql);
  $text_check=M('text_check');
  $sql2="select count(a.check_id) as count_news,a.menu_id,b.pid from text_check a left join menu b on a.menu_id=b.menu_id where a.is_pass=0 group by a.menu_id ;";
  $count2=$text_check->query($sql2);
dump($count);exit
dump($count2);exit;
dump(array_merge($count,$count2));exit;