Question

我在一个php应用程序中工作，其应用程序的类和命名空间导致了

的问题

    $array=array_merge($a,$b)

给了我

Array


(
    [0] => Array
        (
        [blue shoes] => 1464873
        [white shoes] => 2079
        [red shoes] => 0.1419
        [pink shoes] => 115

    )

[1] => Array
    (
        [black dress shoes] => 527471
        [white dress shoes] => 42.5232

    )

)

*****从那个数组开始我究竟能得到什么*****

Array


(
[0] => Array
    (
        [blue shoes] => 1464873
        [white shoes] => 2079
        [red shoes] => 0.1419
        [pink shoes] => 115
        [black dress shoes] => 527471
        [white dress shoes] => 42.5232

    )


)

Answer 1

最简单的解决方法是将$array=array_merge($a,$b)更改为：

$array = array_merge(array_pop($a), array_pop($b));

但是，如果你必须使用你提供的数组，你可以这样做：

$array = array_reduce($array, 'array_merge', []);

Answer 2

看起来您的变量$a和$b不包含平面数组，而是包含单个元素的数组，每个元素都包含一个平面数组。所以你想合并这两个变量的两个第一个元素，我想说。

看一下这个例子：

<?php
$a = [
    [
        'blue shoes' => 1464873,
        'white shoes' => 2079,
        'red shoes' => 0.1419,
        'pink shoes' => 115
    ]
];
$b = [
    [
        'black dress shoes' => 527471,
        'white dress shoes' => 42.5232
    ]
];

print_r(array_merge($a, $b));
print_r(array_merge($a[0], $b[0]));

上述代码的输出显然是：

Array
(
    [0] => Array
        (
            [blue shoes] => 1464873
            [white shoes] => 2079
            [red shoes] => 0.1419
            [pink shoes] => 115
        )

    [1] => Array
        (
            [black dress shoes] => 527471
            [white dress shoes] => 42.5232
        )

)
Array
(
    [blue shoes] => 1464873
    [white shoes] => 2079
    [red shoes] => 0.1419
    [pink shoes] => 115
    [black dress shoes] => 527471
    [white dress shoes] => 42.5232
)

这表明了您面临的问题：

您尝试合并会导致完全您发布的结果。
合并这些数组的第一个元素可以提供所需的结果。

Answer 3

也许您只是在寻找array_replace_recursive - 但这取决于您的输入数组。

$a = [[
    'blue shoes' => 1464873,
    'white shoes' => 2079,
    'red shoes' => 0.1419,
    'pink shoes' => 115
]];
$b = [[
    'black dress shoes' => 527471,
    'white dress shoes' => 42.5232
]];

$c = array_replace_recursive($a, $b);
print_r($c);

那会打印

Array (
    [0] => Array
        (
            [blue shoes] => 1464873
            [white shoes] => 2079
            [red shoes] => 0.1419
            [pink shoes] => 115
            [black dress shoes] => 527471
            [white dress shoes] => 42.5232
        )

)

Answer 4

您的数组是多维的，包含数组#include <sstream> #include <vector> #include <string> #include <iostream> int main() { std::string test = "Saloon 4 0 0 50 0 50 100 0 100"; std::string name; int num; std::istringstream iss(test); iss >> name; iss >> num; std::cout << "Name is " << name << ". Value is " << num << "\n"; std::vector<int> values; int oneValue; while (iss >> oneValue ) values.push_back(oneValue); std::cout << "The values in vector are:\n"; for(auto& v : values) std::cout << v << " "; }和数组0。您可以迭代该数组并将其收集到一个新数组中。

结果：

$a = array(
    array("blue shoes" => 1464873, "white shoes" => 2079, "red shoes" => 0.1419, "pink shoes" => 115),
    array("black dress shoes" => 527471, "white dress shoes" => 42.5232)
);


$newarray = array();

foreach ($a as $key => $oldarray) {

    foreach ($oldarray as $shoe => $indexcount) {

        $newarray[$shoe] = $indexcount;
    }
}

print_r($newarray);

当array_merge无法正常工作时，将php数组合并在正确的级别上

4 个答案: