从字符串php构建多维数组

问题描述

这是$preparedstring的一部分:

我正在尝试将HTML表转换为多维数组.我已将表转换为长字符串，每个单元格均以逗号分隔，每行均以分号分隔.

I am trying to convert a HTML table to a multidimensional array. I have converted the table into a long string, each cell being delimited with a comma and each row being delimited with a semicolon.

我不确定如何从此字符串构建多维数组.到目前为止，这是我尝试过的:

I am not exactly sure how to build the multidimensional array from this string. This is what I have tried so far:

<?php
$outerARR = explode(";", $preparedstring);

    $arr = array
    (
    foreach ($outerARR as $arrvalue) {
        $innerarr = explode(",", $arrvalue);
        $innerarr[0]=>array
        (
         $innerarr[];
         )
    }
    );
?>

这使我在

左括号.

推荐答案

您解决问题的方法非常可悲，尽管您的问题有很多解决方案，但我会使用类似以下的内容.

Your approach to solving the problem is sadly very wrong, though there are many solutions to your problem, I would use something like the below.

代码如何工作?

首先，我们使用爆炸将字符串分成较小的块，;是我们的分隔符.

First we use explode to split our string up in smaller chunks, ; is our delimiter.

我们将此新创建的数组传递给 array_map 第二个参数.

We pass this newly created array to array_map as it's second parameter.

array_map 具有两个参数，第一个是将为第二个参数的每个成员(应为数组)调用的函数.

array_map takes two parameters, the first one is a function that will be called for every member of the second paramater (which should be an array).

在我们对 array_map 的回调中，我们使用分解再次拆分出值，现在以,作为分隔符.

Inside our callback to array_map we use explode to once again split out the values, now with , as our delimiter.

$data = "1,2,3;4,5,6;7,8,9";

$ret = array_map (
  function ($_) {return explode (',', $_);},
  explode (';', $data)
);

print_r ($ret);

输出

Array
(
    [0] => Array
        (
            [0] => 1
            [1] => 2
            [2] => 3
        )

    [1] => Array
        (
            [0] => 4
            [1] => 5
            [2] => 6
        )

    [2] => Array
        (
            [0] => 7
            [1] => 8
            [2] => 9
        )

)

---

它不起作用，为什么?

可能是因为您使用的是5.3之前的PHP版本，如果可以，则可以改用以下代码段:

Probably because you are using a version of PHP prior to 5.3, if so you can use this snippet instead:

function explode_by_comma ($_) {
  return explode (',', $_);
}

$ret = array_map ('explode_by_comma', explode (';', $data));

这篇关于从字符串php构建多维数组的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！