使用数组合并两个不同的表

Question

我有两张桌子。

1）产品：id，名称，价格

2）书籍：id，title，book_price

现在我想合并这两个表的数据，并使用数组按最低价格对它们进行排序。

如何合并这两个数组？

它应该是这样的：

<?php
$a1=array( 
            "id"=>1,"name"=>'Ram',"price"=>100 ,
            "id"=>2,"name"=>'Keyboard',"price"=>200 ,
            "id"=>3,"name"=>'Mouse',"price"=>300 ,
            "id"=>4,"name"=>'LCD',"price"=>400 ,

            );


$a2=array( 
            "id"=>1,"title"=>'ABC',"book_price"=>150 ,
            "id"=>2,"title"=>'XYZ',"book_price"=>250 ,

            );


print_r(array_merge($a1,$a2));
?> 

Answer 1

$a2=array( 
            "id"=>1,"title"=>'Regions',"book_price"=>150 ,
            "id"=>2,"title"=>'Routes',"book_price"=>250 ,

            );

$a1=array( 
            "id"=>1,"name"=>'Ram',"price"=>100 ,
            "id"=>2,"name"=>'Keyboard',"price"=>200 ,
            "id"=>3,"name"=>'Mouse',"price"=>300 ,
            "id"=>4,"name"=>'LCD',"price"=>400 ,

            ); +a2

，或者

$ output = $ a1 + $ a2;