Question

我是PHP的新手，我很难按数组进行分组。事实上，我有一个多维度的患者阵列（“id”）住院（“开始”是住院日期），他们在那里有每个不同住院的诊断。

$data = array (
  0 =>array("id"=>1, "begin"=>"01/01","diagnostic"=>"a"),
  1 =>array("id"=>1, "begin"=>"01/01","diagnostic"=>"b"),
  2 =>array("id"=>1, "begin"=>"01/01","diagnostic"=>""),
  3 =>array("id"=>1, "begin"=>"02/02","diagnostic"=>"a"),
);

从列“id”和“begin”的那一刻起，我想用“逗号”连接“诊断”的值。我想有这样的事情：

$output = array (
  0 =>array("id"=>1, "begin"=>"01/01","diagnostic"=>"a, b"),
  1 =>array("id"=>1, "begin"=>"02/02","diagnostic"=>"a"),
);

是的，请问有人帮帮我吗？谢谢

Answer 1

公平地说，你要求一个完整的解决方案。

所以，我快速了解如何完成它：

http://sandbox.onlinephpfunctions.com/code/eb4fef6146b77fb7ff157790046c79750ef90cdb

<?php
$data = [
  0 =>array("id"=>1, "begin"=>"01/01","diagnostic"=>"a", "procedure" => "x"),
  1 =>array("id"=>1, "begin"=>"01/01","diagnostic"=>"b", "procedure" => ""),
  2 =>array("id"=>1, "begin"=>"01/01","diagnostic"=>"a", "procedure" => "y"),
  3 =>array("id"=>1, "begin"=>"02/02","diagnostic"=>"a", "procedure" => "z"),
];

// create an empty array to hold results
$result = [];

// iterate through each entry of the original $data
foreach($data as $entry){
    // create a temporary array index, that will be unique across the entries conditions (begin, id)
    $tempId = $entry['id'] . '-' . $entry['begin'];

    // create and append entries to diagnostic and procedure
    $result[$tempId]['diagnostic'][] = $entry['diagnostic'];
    $result[$tempId]['procedure'][] = $entry['procedure'];

    // copy data that is identical
    $result[$tempId]['begin'] = $entry['begin'];
    $result[$tempId]['id'] = $entry['id'];
}

// iterate through entries and implode unique, not empty elements of diagnostic and procedure array with a comma
foreach($result as &$entry){
    $entry['diagnostic'] = implode(',', array_unique(array_filter($entry['diagnostic'])));
    $entry['procedure'] = implode(',', array_unique(array_filter($entry['procedure'])));
}
print_r($result);

以上将产生：

Array
(
    [1-01/01] => Array
        (
            [diagnostic] => a,b
            [procedure] => x,y
            [begin] => 01/01
            [id] => 1
        )

    [1-02/02] => Array
        (
            [diagnostic] => a
            [procedure] => z
            [begin] => 02/02
            [id] => 1
        )

)

通过PHP中的多维数组进行分组，并使用逗号连接结果

1 个答案: