如何将数据作为数组的索引数组（不指定索引） [英] How to POST data as an indexed array of arrays (without specifying indexes)
问题描述
我在将数据发布为数组数组时遇到了一些问题。这是我希望我的数据被张贴的方式：
array（
['someName'] => ;
array（[0] =>
array（['description'] => 890
['valore'] => 444）
[1] = >
array（['description'] => 98090
['value'] => 77）
）
我知道如果我的html是这样的，我可以实现这个功能：
< input type ='text'name =someName [0] [value]>
< input type ='text'name =someName [0] [description]>
< input type ='text'name =someName [1] [value]>
< input type ='text'name =someName [1] [description]>
我的问题是输入字段在表的行上，用户可以添加/删除多行如他所愿，所以我不能有固定的索引（或者每次添加行时我都必须修改输入字段的名称，因为每当我添加一行时，我都会克隆上一行所以我要求的是以下两件事之一：
1）有没有2）如果没有，我怎样才能动态修改新的输入字段，以便他们有一个更新的名称与我想要的方式发布数据的方式，而不是指定一个索引 新的索引？
编辑 - 我曾尝试使用 name =someName [value] []和 name =someName [description] []但输出不是所需的：
array（['terreniOneri'] =>
array [['descrizione'] => array（[0] => 890
[1] => 98090）
['valore'] => array（[ 0] => 444
[1] => 677）
）
<我知道我可以在PHP中迭代这个数组，我只是想知道我是否可以避免它。 解决方案
你提出这个问题的方式。如果用户删除某行，您的表单元素将为：
< form action =...method = postonsubmit =return reindexer（this）;>
< input type ='text'name =someName [0] [value]>
< input type ='text'name =someName [0] [description]>
< input type ='text'name =someName [2] [value]>
< input type ='text'name =someName [2] [description]>
< / form>
但是在php中使用非连续的数字索引遍历数组没有问题：使用 foreach 循环。
<？php
if（count（ $ _POST ['somename']）> 0）
{
foreach（$ _POST ['somename'] as $ row）
{
echoValue：。$ row ['value']。< br /> \\\
;
echoDescription：。$ row ['description']。< br /> \\\
;
$ b如果你需要知道每一行的数量为一个连续的索引（在所提供的示例中，第0行仍然是0，但第2行应该是1（因为用户删除了一行），您可以使用一个变量作为计数器： <？php
if（count（$ _ POST ['somename']）> 0）
{
$ i = 0;
foreach（$ _POST ['somename'] as $ row）
{
echoIndex $ i< br /> \\\
;
echo值：。$ row ['value']。< br /> \\\
;
echoDescription：。$ row ['description']。< br /> \\ \\ n;
$ i ++;
}
}
我认为这种方法更有意义，其他解决方案，因为这样你会有一系列项目，每个项目都是一个值和一个描述，而不是有两个单独的值和描述数组，并且必须获取您的值项目从这两个数组而不是一个。
编辑：我修改了第一段代码以包含< form> 元素。这将是伴随的js函数：
< script type =text / javascript>
函数reindexer（frm）
{
var counter = 0;
var inputsPerRow = 2;
for（var idx = 0; idx< frm.elements.length; idx ++）
{
elm.name = elm.name.replace（'%% INDEX %%'，counter ）;
if（idx％inputsPerRow == 1）
{
//在您处理完每行的所有
//输入后，只增加计数器（或行号）
counter ++;
}
}
}
< / script>
i'm having some problem with posting data as an array of array. This is how i'd like my data to be POSTED:
array(
['someName'] =>
array([0] =>
array(['description'] =>890
['valore'] =>444)
[1] =>
array(['description'] =>98090
['value'] =>77)
)
I know i can achieve this if my html is like this:
<input type='text' name="someName[0][value]">
<input type='text' name="someName[0][description]">
<input type='text' name="someName[1][value]">
<input type='text' name="someName[1][description]">
My problem is that the input fields are on rows of a table and the user can add/remove as many rows as he want, so i can't have fixed index (or i have to modify the name of the input fields each time a row is added since every time i add a row i clone the upper row in the table)
So what i am asking is one of these two things:
1) is there a way to post data the way i want without specifing an index
2)if not, how can i modify dynamically the new input field so that they have an updated name with the new index?
EDIT - i had alredy tried using name="someName[value][]" and name="someName[description][]" but the output is not the desired one:
array(['terreniOneri'] =>
array(['descrizione'] =>array([0] =>890
[1] => 98090)
['valore'] =>array([0] =>444
[1] =>677)
)
i know i can iterate on this array in php i was just wondering if i could avoid it.
解决方案 Do it the way you put in the question. If the user removes some row, your form elements would be:
<form action="..." method="post" onsubmit="return reindexer(this);">
<input type='text' name="someName[0][value]">
<input type='text' name="someName[0][description]">
<input type='text' name="someName[2][value]">
<input type='text' name="someName[2][description]">
</form>
But there's no problem to traverse an array with non-contiguous numeric indexes in php: use a foreach loop.
<?php
if (count($_POST['somename']) > 0)
{
foreach ($_POST['somename'] as $row)
{
echo "Value: ".$row['value']."<br />\n";
echo "Description: ".$row['description']."<br />\n";
}
}
If you need to know the number of each row as a continous index (in the example provided, row 0 would still be 0, but row 2 should be 1 (as the user deleted one row), you can use a variable acting as a counter:
<?php
if (count($_POST['somename']) > 0)
{
$i = 0;
foreach ($_POST['somename'] as $row)
{
echo "Index $i<br />\n";
echo "Value: ".$row['value']."<br />\n";
echo "Description: ".$row['description']."<br />\n";
$i++;
}
}
I think this approach has more sense that the other solutions, as this way you would have an array of items, being each item a value and a description, instead of having two separate arrays of values and descriptions and having to get the values for your item from those two arrays instead of one.
edit: I've modified the first piece of code to include the <form> element. This would be the accompanying js function:
<script type="text/javascript">
function reindexer(frm)
{
var counter = 0;
var inputsPerRow = 2;
for (var idx = 0; idx < frm.elements.length; idx++)
{
elm.name = elm.name.replace('%%INDEX%%', counter);
if (idx % inputsPerRow == 1)
{
// only increment the counter (or row number) after you've processed all the
// inputs from each row
counter++;
}
}
}
</script>
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