Question

我有两个数组（这是来自PHP的JSON数组）

一个

"result1": [
    {
        "driverId": "3",
        "latitude": "23.752182",
        "longitude": "90.377730",
        "distance": "0.00011211999971692422",
        "EstTime": 137
    },
        {
        "driverId": "4",
        "latitude": "23.75182",
        "longitude": "90.3730",
        "distance": "0.000171692422",
        "EstTime": 111
    }
]

两个

"result2": [
    {
        "driverId": "3"
    }
]

我想比较这些数组。如果任何result1项driverID匹配result2的任何项，则从result1

跳过该项

Answer 1

您可以分两个阶段完成此任务。

首先收集driverId以使用array_map

排除

$exclude    = array_map(
    function($v) {
        return $v['driverId'];
    },
    $json['result2']
);

然后使用array_filter过滤掉您不想要的元素：

$result = array_filter(
    $json['result1'],
    function($a) use ($exclude) {
        return !in_array($a['driverId'], $exclude);
    }
);

我已使用以下代码对此进行了测试。如果您有单独的数组，只需在上面独立提供，而不是使用$json['result1']。

    $a = <<<JSON
{
    "result1": [
    {
        "driverId": "3",
        "latitude": "23.752182",
        "longitude": "90.377730",
        "distance": "0.00011211999971692422",
        "EstTime": 137
    },
        {
        "driverId": "4",
        "latitude": "23.75182",
        "longitude": "90.3730",
        "distance": "0.000171692422",
        "EstTime": 111
    }
],
"result2": [
    {
        "driverId": "3"
    }
]
}
JSON;
    $json = json_decode($a, true);

Answer 2

尝试以下方法。在这个答案中，我假设您已经应用json_decode()并将$result1和$result2提取到PHP数组中。

继续上一次评论之后，编辑的代码将在5.2版中运行

<?php

// associative array of result1
$result1 = array(
    array(
        'driverId'  => '3',
        'latitude'  => '23.752182',
        'longitude' => '90.377730',
        'distance'  => '0.00011211999971692422',
        'EstTime'   =>  137
    ),
    array(
        'driverId'  => '4',
        'latitude'  => '23.75182',
        'longitude' => '90.3730',
        'distance'  => '0.000171692422',
        'EstTime'   => 111
    )
);

// associative array of result2
$result2 = array(
    array(
        'driverId' =>  '3'
    )
);

// first, let's get a list of ids that we want to exclude
// run array map over the result2 and return the ids - this
// creates an array of "exclusion" ids. Note you could use
// foreach here also.

function pluckResultIds($result) {
    return $result['driverId'];
}

$excludeIds = array_map('pluckResultIds', $result2);

var_dump($excludeIds); // result: array(3)

// next let's use array_filter to run over result1. for each
// entry in result1 - we check if the current driverId is in
// the exclusion array - if it is *not* we return the current
// this creates a new array $filtered containing only the
// filtered elements that do not match

$filtered = array();
foreach ($result1 as $result) {
    $id = $result['driverId'];
    if (!in_array($id, $excludeIds)) {
        $filtered[] = $result;
    }
};

var_dump($filtered);

收率：

array (size=1)
  1 => 
    array (size=5)
      'driverId' => string '4' (length=1)
      'latitude' => string '23.75182' (length=8)
      'longitude' => string '90.3730' (length=7)
      'distance' => string '0.000171692422' (length=14)
      'EstTime' => int 111

希望这有帮助！：）

比较要跳过的两个数组项

2 个答案: