Retrieving data from several input fields with the same name

Question

I have a form that you dynamically creates new input fields (type=hidden) which when the form is sent should be retrieved by my php code. However, by the reason that the number of input fields can differ I gave them the same name. The problem however is that I don't know how to retrieve it, or more correctly, what to do with what's retrieved.

from the form:

...
<input type='hidden' name='newListObject' value='0' />
<input type='hidden' name='newListObject' value='1' />
<input type='hidden' name='newListObject' value='2' />
<input type='hidden' name='newListObject' value='3' />
...

from php code (listView.php):

private $m_newListObject = 'newListObject';
...
if (isset($_POST[$this->newListObject])) {
    $listObjects = $_POST[$this->m_newListObject];
}

from php code (listModel.php):

//Below doesn't work because $listObjects isn't an array

foreach ($listObjects as $listObject) {
    $query = "INSERT INTO listElement (listElemName, listId) VALUES(?, ?)";

    $stmt = $this->m_db->Prepare($query);

    $stmt->bind_param('si', $listObject, $listId);

    $ret = $this->m_db->RunInsertQuery($stmt);

}

CodeAngry · Accepted Answer · 2012-10-28 18:49:47Z

3

<input type='hidden' name='newListObject[]' value='0' />
<input type='hidden' name='newListObject[]' value='1' />
<input type='hidden' name='newListObject[]' value='2' />
<input type='hidden' name='newListObject[]' value='3' />

And use $_REQUEST['newListObject'] as an array() now.

answered Oct 28, 2012 at 18:49

CodeAngry

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2 Comments

holyredbeard Over a year ago

Thanks! So I should retrieve them without the "[]"? Should I use $_REQUEST instead of $_POST or what do you mean?

CodeAngry Over a year ago

@holyredbeard $_POST if you POST, $_GET if you GET, $_REQUEST if I don't know :) [] turns them into arrays in PHP. So you treat $_WHATEVER['newListObject'] as an array not a scalar. And without []. That's just in HTML to make PHP give you arrays.

Martin Lyne · Accepted Answer · 2012-10-28 18:50:28Z

1

If you call them name="newListPObject[]" PHP will receive them as an array that can be looped over.

answered Oct 28, 2012 at 18:50

Martin Lyne

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