如何在PHP中合并此数组的重复元素？

问题描述：

I have an array like this:

$array = array(
    0 => array("ordernumber" => "1", "name" => "John", "product" => "laptop", "component" => "memory"),
    1 => array("ordernumber" => "1", "name" => "John", "product" => "laptop", "component" => "cpu"),
    2 => array("ordernumber" => "1", "name" => "John", "product" => "desktop", "component" => "cpu"),
    3 => array("ordernumber" => "2", "name" => "Pete", "product" => "monitor", "component" => "")
);

It contains data from different orders, but as you can see an order can contain multiple purchased products, and each product can contain different 'components'. There's alot of duplicate data in this array, so I would like to turn it into this:

$array = array(
    0 => array(
        "order" => array(
            "ordernumber" => "1", "name" => "John"
        ),
        "products" => array(
            0 => array(
                "name" => "laptop",
                "components" => array("memory", "cpu")
            ),
            1 => array(
                "name" => "desktop",
                "components" => array("cpu")
            )
        )
    ),
    1 => array(
        "order" => array(
            "ordernumber" => "2", "name" => "Pete"
        ),
        "products" => array(
            0 => array(
                "name" => "monitor",
                "components" => array()
            )
        )
    )
);

What would be a good way to do this?

我有一个这样的数组： p>

  $ array =  array（
 0 =＆gt; array（“ordernumber”=＆gt;“1”，“name”=＆gt;“John”，“product”=＆gt;“laptop”，“component”=＆gt;“memory”）  ，
 1 =＆gt; array（“ordernumber”=＆gt;“1”，“name”=＆gt;“John”，“product”=＆gt;“laptop”，“component”=＆gt;“cpu”），  
 2 =＆gt; array（“ordernumber”=＆gt;“1”，“name”=＆gt;“John”，“product”=＆gt;“desktop”，“component”=＆gt;“cpu”），\  n 3 =＆gt; array（“ordernumber”=＆gt;“2”，“name”=＆gt;“Pete”，“product”=＆gt;“monitor”，“component”=＆gt;“”）
）;  
  code>  pre> 
 
 它包含来自不同订单的数据，但正如您所看到的，订单可以包含多个购买的产品，并且每个产品可以包含不同的“组件”。 这个数组中有很多重复的数据，所以我想把它变成这个： p> 
 
 
  $ array = array（
 0 =＆gt; array（
“order）  “=＆gt;数组（
”ordernumber“=＆gt;”1“，”name“=＆gt;”John“
），
”products“=＆gt;数组（
 0 =＆gt;数组（\  n“name”=＆gt;“laptop”，
“components”=＆gt; array（“memory”，“cpu”）
），
 1 =＆gt; array（
“name”=＆gt;“  desktop“，
”components“=＆gt; array（”cpu“）
）
）
），
 1 =＆gt; array（
”order“=＆gt; array（
”ordernumber“  =＆gt;“2”，“name”=＆gt;“Pete”
），
“products”=＆gt; array（
 0 =＆gt; array（
“name”=＆gt;“monitor”，  
“components”=＆gt; array（）
）
）
）
）; 
  code>  pre> 
 
 这样做的好方法是什么？  ？ p> 
  div>

答

Please use below code to make the solution what you want

<?php 

$array = array(
    0 => array("ordernumber" => "1", "name" => "John", "product" => "laptop", "component" => "memory"),
    1 => array("ordernumber" => "1", "name" => "John", "product" => "laptop", "component" => "cpu"),
    2 => array("ordernumber" => "1", "name" => "John", "product" => "desktop", "component" => "cpu"),
    3 => array("ordernumber" => "2", "name" => "Pete", "product" => "monitor", "component" => "")
);



$final_array = [];
foreach($array as $k=>$v){
    $final_array[$v['ordernumber']]['order']['ordernumber'] = $v['ordernumber'];
    $final_array[$v['ordernumber']]['order']['name'] = $v['name'];

    $final_array[$v['ordernumber']]['products'][$v['product']]['name'] = $v['product'];
    $final_array[$v['ordernumber']]['products'][$v['product']]['components'][] = $v['component'];
}

// You can skip this foreach if there will not metter of KEY of an array in your code!
$final_array = array_values($final_array);
foreach($final_array as $k=>$v){
    $final_array[$k]['products'] = array_values($final_array[$k]['products']);  
}


echo "<pre>";
print_r($final_array);

?>

its should work!!

如何在PHP中合并此数组的重复元素？

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