比较 PHP 中的数组并将值从一个分配给另一个 - comparing arrays in php and assign values from one to another

comparing arrays in php and assign values from one to another

在我的

一个项目上醒了几天了，本质上，我在这个项目中要做的是比较用户通常在Excel中做的csv文件，每天晚上在php中自动完成。我从 CSV 的介绍数组中获得了信息，但我无法将它们结合起来以获得每本书的正确信息，因此出现了以下示例和问题。

我有一个来自csv文件的以下数组（array1）：

Array
(
[0] => Array
    (
        [0] => book1
        [1] => description1
        [2] => category1
        [3] => code1
        [4] => editor1
        [5] => 0
        [6] => eur
        [7] => out of stoc
    )
[1] => Array
    (
        [0] => book2
        [1] => description2
        [2] => category2
        [3] => code2
        [4] => editor2
        [5] => 0
        [6] => curr2
        [7] => out of stoc
    )
[2] => Array
    (
        [0] => book3
        [1] => description3
        [2] => category3
        [3] => code3
        [4] => editor3
        [5] => 0
        [6] => curr3
        [7] => out of stoc
    )
[3] => 
)

和第二个 CSV 文件中的另一个数组（array2）：

Array
(
[0] => Array
    (
        [0] => book1
        [1] => description_from_array2
        [2] => category_from_array2
        [3] => code_from_array2
        [4] => editor_from_array2
        [5] => 12
        [6] => eur
        [7] => in stoc
    )
[1] => Array
    (
        [0] => book2
        [1] => description_from_array2
        [2] => category_from_array2
        [3] => code_from_array2
        [4] => editor_from_array2
        [5] => 13
        [6] => eur
        [7] => in stoc
    )
[2] => Array
    (
        [0] => book4
        [1] => description_from_array2
        [2] => category_from_array2
        [3] => code_from_array2
        [4] => editor_from_array2
        [5] => 14
        [6] => usd
        [7] => in stoc
    )
[3] => Array
    (
        [0] => book5
        [1] => description_from_array2
        [2] => category_from_array2
        [3] => code_from_array2
        [4] => editor_from_array2
        [5] => 16
        [6] => usd
        [7] => in stoc
    )
)

我想知道如何从 array2 介绍 array1 中获取数组 2 中的值，以便在 array2 中找到的 array1 书籍。前任：

Array
(
[0] => Array
(
    [0] => book1
    [1] => description2_from_array2
    [2] => category2_from_array2
    [3] => code2_from_array2
    [4] => editor2_from_array2
    [5] => 12
    [6] => eur
    [7] => in stoc
)
[1] => Array
(
    [0] => book2
    [1] => description_from_array2
    [2] => category_from_array2
    [3] => code_from_array2
    [4] => editor_from_array2
    [5] => 13
    [6] => curr_from_array2
    [7] => in stoc
)
[2] => Array
(
    [0] => book3
    [1] => description3
    [2] => category3
    [3] => code3
    [4] => editor3
    [5] => 0
    [6] => curr3
    [7] => out of stoc //because book3 is not found in array2
)
[3] => 
)

对

这个问题的任何帮助将不胜感激，相信我！

//Add keys to array 2 to aid lookup
$array2Tmp = array();
foreach($array2 as $item){
    $array2Tmp[$item[0]] = $item;
}
$array3 = array();
foreach($array1 as $item){
    //Use item from second array if it exists
    if(array_key_exists($item[0],$array2Tmp)){
       $array3[] = $array2Tmp[$item[0]];
     }else{
       $array3[] = $item;
     }
}