php中具有不同值的数组操作答案

【问题标题】：Array manipulation in php with distinct valuesphp中具有不同值的数组操作
【发布时间】：2016-06-22 09:45:24
【问题描述】：

我正在尝试将多个数组合并为单个数组并使值唯一。

$array = array ( 
        $array1 = array(
        "id" => 205,
        "firstName" => "NANCY GEORGE",
        "gender" => "F",
        "age" => 21,
        "alert" => "bmi"
    ),
    $array2 = array(
        "id" => 205,
        "firstName" => "NANCY GEORGE",
        "gender" => "F",
        "age" => 21,
        "alert" => "bp"
    ),
    $array3 = array(
        "id" => 206,
        "firstName" => "KUTAPPA.A.C",
        "gender" => "M",
        "age" => 31,
        "alert" => "bmi"
    )
    );

这是我的预期输出，

$array = array ( 
        '205' = array(
        "id" => 205,
        "firstName" => "NANCY GEORGE",
        "gender" => "F",
        "age" => 21,
        "alert" => "bmi,bp"
    ),
    '206' = array(
        "id" => 206,
        "firstName" => "KUTAPPA.A.C",
        "gender" => "M",
        "age" => 31,
        "alert" => "bmi"
    )
);

我正在尝试在 foreach 中合并数组以创建新数组，但它无法获得预期的结果。

【问题讨论】：

“它不工作”什么不工作？你还没有发布任何代码。循环遍历原始数组并检查新数组中是否已经存在具有相同 ID 的键，如果存在，则向 alert 添加值，如果不向数组中添加项。
How do I use array_unique on an array of arrays?的可能重复
先搜索再询问。 Stackoverflow充满这样的问题和答案
..也许更重要的问题是为什么您拥有包含所有这些重复项的数据？如果您从数据库中获取此数据，为什么不能只使用GROUP_CONCAT？
您发布的预期输出不是有效的 PHP 代码。第二行应该是'205' => array(。 '206' = array( 行也是如此。

标签： php

【解决方案1】：

这应该可以解决问题，但正如其中一位 cmets 指出的那样，如果您可以修复数据库以便为您分组，那将是理想的。

<?php
$arrays = array ( 
$array1 = array(
  "id" => 205,
    "firstName" => "NANCY GEORGE",
  "gender" => "F",
  "age" => 21,
  "alert" => "bmi"
),
$array2 = array(
  "id" => 205,
  "firstName" => "NANCY GEORGE",
  "gender" => "F",
  "age" => 21,
  "alert" => "bp"
),
$array3 = array(
  "id" => 206,
  "firstName" => "KUTAPPA.A.C",
  "gender" => "M",
  "age" => 31,
  "alert" => "bmi"
)
);

$cleanArray; //???
foreach($arrays as $array){
if(!empty($cleanArray)){
    foreach($cleanArray as $cleanKey => $clean){
        if($array['id'] == $cleanKey){
            //Just did alerts because I hope nothing else needs this...
            if(!($array['alert'] == $clean['alert'])){
                $cleanArray[$cleanKey]['alert'] .= ", " . $array['alert'];
            }
        } else {
            $id = $array['id'];
            unset($array['id']);
            $cleanArray[$id] = $array;
        }
    }
} else {
    $id = $array['id'];
    unset($array['id']);
    $cleanArray[$id] = $array;
}
}
echo"<pre>";
print_r($cleanArray);

【讨论】：

【解决方案2】：

这可能会对你有所帮助。

  $arr1 = array(
        "id" => 205,
        "firstName" => "NANCY GEORGE",
        "gender" => "F",
        "age" => 21,
        "alert" => "bmi"
    );
    $arr2 = array(
        "id" => 205,
        "firstName" => "NANCY GEORGE",
        "gender" => "F",
        "age" => 21,
        "alert" => "bp"
    );
    $arr3 = array(
        "id" => 206,
        "firstName" => "KUTAPPA.A.C",
        "gender" => "M",
        "age" => 31,
        "alert" => "bmi"
    );
    $arr4 = array($arr1, $arr2, $arr3);


    $n = count($arr4);

    for($i=0; $i<=$n; $i++){
        if($arr4[$i]['id'] == $arr4[$i+1]['id']){
            $id = $arr4[$i]['id'];
            foreach($arr4[$i] as $key=>$value){
                if($arr4[$i][$key] <> $arr4[$i+1][$key]){
                    $str = array($arr4[$i][$key], $arr4[$i+1][$key]);
                    $str = implode(',', $str);
                    $arr5[$id][$key] = $str;
                }
                else {
                    $arr5[$id][$key] = $arr4[$i][$key];
                }
            }
            $i++;
        }
        elseif($arr4[$i]['id'] <> $arr4[$i+1]['id']) {
            $id = $arr4[$i]['id'];
            $arr5[$id] = $arr4[$i];
        }

    }

    print_r($arr5);

输出-

Array
(
    [205] => Array
        (
            [id] => 205
            [firstName] => NANCY GEORGE
            [gender] => F
            [age] => 21
            [alert] => bmi,bp
        )

    [206] => Array
        (
            [id] => 206
            [firstName] => KUTAPPA.A.C
            [gender] => M
            [age] => 31
            [alert] => bmi
        )

)

【讨论】：

【解决方案3】：

试试吧……

   <?php 
   $array = array ( 
   $array1 = array(
        "id" => 205,
        "firstName" => "NANCY GEORGE",
        "gender" => "F",
        "age" => 21,
        "alert" => "bmi"
    ),
    $array2 = array(
        "id" => 205,
        "firstName" => "NANCY GEORGE",
        "gender" => "F",
        "age" => 21,
        "alert" => "bp"
    ),
    $array3 = array(
        "id" => 206,
        "firstName" => "KUTAPPA.A.C",
        "gender" => "M",
        "age" => 31,
        "alert" => "bmi"
    )
);
echo "<pre>"; print_r($array);

$newArray =array();  
foreach($array as $key => $val)
{  
    $newArray[$val['id']] = $val;
}
echo "<pre>"; print_r($newArray);

?>

输出

Array
(
    [205] => Array
        (
            [id] => 205
            [firstName] => NANCY GEORGE
            [gender] => F
            [age] => 21
            [alert] => bp
        )

    [206] => Array
        (
            [id] => 206
            [firstName] => KUTAPPA.A.C
            [gender] => M
            [age] => 31
            [alert] => bmi
        )

)

【讨论】：