合并同名的PHP数组元素 - merge php array elements that have the same name

merge php array elements that have the same name

本文关键字：PHP 数组元素合并 | 更新日期: 2023-09-26

我有这个php数组

array [
    [0] => array [
                   name => 'a',
                   service => 'x1' 
                 ],
    [1] => array [
                   name => 'a',
                   service => 'x2' 
                 ],
    [2] => array [
                   name => 'a',
                   service => 'x3' 
                 ],
    [3] => array [
                   name => 'b',
                   service => 'x1' 
                 ],
    [4] => array [
                   name => 'b',
                   service => 'x3' 
                 ],
    [5] => array [
                   name => 'b',
                   service => 'x5' 
                 ]
]

我想在一个元素和b中管理所有a的服务，就像下面这样:

array [
    [0] => array [
                   name => 'a',
                   service => 'x1, x2, x3' 
                 ],
    [1] => array [
                   name => 'b',
                   service => 'x1, x3, x5' 
                 ]
]

php代码:

$new_services = array(); 
foreach($services as $service) {
      if (isset($new_services[$service->name])) {
           $new_services[$service->name] .= $service['name'].',';
      }
      else{ 
         $new_services[$service->name] = $service['service'];
      }
}

这应该可以为您工作:

查看每个子数组并检查您的$result数组中是否有以名称作为索引的子数组。如果没有，将其添加到结果数组中。如果您已经有一个带有名称的键，只需将服务值附加到它。最后用array_values()重新索引数组。

<?php
    $result = [];
    foreach($arr as $v) {
        if(!isset($result[$v["name"]])) {
            $result[$v["name"]]["name"] = $v["name"];
            $result[$v["name"]]["service"] = $v["service"];
        } else {
            $result[$v["name"]]["service"] .= ", " . $v["service"];
        }
    }
    $result = array_values($result);
    print_r($result);
?>

输出:

Array
(
    [0] => Array
        (
            [name] => a
            [service] => x1, x2, x3
        )
    [1] => Array
        (
            [name] => b
            [service] => x1, x3, x5
        )
)