PHP将多个数组转换为一个关联数组 [英] PHP multiple arrays to one associative array
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问题描述
如何合并这三个数组
$name ={"Tom", "John", "David"};
$v1 = {"Tom":100, "David":200};
$v2 = {"John":500, "Tom":400};
以两种不同方式转换为一个多维关联数组? 一种方法是键顺序应与数组名称"的键顺序相同.
into one multidimensional associative array in two different ways? One way is the key order should be same as that of array "name".
$name_merged_original_order = array (
"Tom" => Array(
"v1" => 100,
"v2" => 400
),
"John" => Array(
"v1" => "N/A",
"v2" => 500
),
"David" => Array(
"v1" => 100,
"v2" => "N/A"
)
)
另一种方式是按字母顺序排列数组名称":
Another ways is the alphabetical of array "name":
$name_merged_asc = array (
"David" => Array(
"v1" => 100,
"v2" => "N/A"
),
"John" => Array(
"v1" => "N/A",
"v2" => 200
),
"Tom" => Array(
"v1" => 100,
"v2" => 400
),
)
棘手的部分是,数组"v1"和"v2"没有作为"name"的键排序.它们也没有名称"中的所有键.谢谢!
The tricky part is that array "v1" and "v2" is not ordered as the key of "name." They also don't have all keys as in "name." Thanks!
推荐答案
未经测试,最简单的解决方案:
It's not tested and the easiest solution:
$name_merged_original_order = array();
foreach($name as $key){
$name_merged_original_order[$key] = array();
if(array_key_exists($key, $v1)){
$name_merged_original_order[$key]['v1'] = $v1[$key];
}
else{
$name_merged_original_order[$key]['v1'] = 'N/A';
}
if(array_key_exists($key, $v2)){
$name_merged_original_order[$key]['v2'] = $v2[$key];
}
else{
$name_merged_original_order[$key]['v2'] = 'N/A';
}
}
sort($name);
$name_merged_asc = array();
foreach($name as $key){
$name_merged_asc[$key] = array();
if(array_key_exists($key, $v1)){
$name_merged_asc[$key]['v1'] = $v1[$key];
}
else{
$name_merged_asc[$key]['v1'] = 'N/A';
}
if(array_key_exists($key, $v2)){
$name_merged_asc[$key]['v2'] = $v2[$key];
}
else{
$name_merged_asc[$key]['v2'] = 'N/A';
}
}
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