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How to POST data as an indexed array of arrays (without specifying indexes)

开发者 https://www.devze.com 2023-03-07 12:48 出处:网络
i\'m having some problem with posting data as an array of array. This is how i\'d like my data to be POSTED:

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] =>开发者_JAVA百科444
                                  [1] =>677)
      ) 

i know i can iterate on this array in php i was just wondering if i could avoid it.


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>


Try like this:

<input type='text' name="someNameValue[]">
<input type='text' name="someNameDescription[]">

If the fields are paired, they can be attached by the indexes. So if you have the 10th row, someNameValue[9] and someNameDescription[9] will be a pair. You can merge them.

EDIT: You don't have to write the indexes manually, they will be automatically generated.

<input type='text' name="someName[]">
<input type='text' name="someName[]">
<input type='text' name="someName[]">

and

<input type='text' name="someName[0]">
<input type='text' name="someName[1]">
<input type='text' name="someName[2]">

will give the same result in your post array.

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