Question

I’m really new at javascript and JQuery and I’m using JQuery datatables. I have read the page for 100 times and compared the html source and I managed to figure out how to pass the only checked fields into the sData array… Anyway…

I have this array:

var sData

which alerts me which rows I have selected when I submit the form, it gives something like this:

1=1&2=2&10=10&18=18

---

Before this I used simple table with each row a button which reserved me the one I choose, so this step is really confusing for me…

I used this query to add them to the database:

if (isset($_POST['addtolist']) ) 
{
    $itemid=mysql_real_escape_string($_POST['itemid']);
    $AddToListQuery = "
                    INSERT INTO
                    reservelist
                   (itemid, projectid)
                    VALUES
                   ('$itemid', '" . mysql_real_escape_string($_SESSION['projectidtoreserve']) . "')
                   ";      
    mysql_query($AddToListQuery, $conn);
    header('Location: pm_reserving.php');
    exit();
}

And it executed every time after clicking on a button at the specified table row.

But now I have no clue how to pass this sData array to the query…

I can’t just use this sData like it now is to enter it into the database, because it wouldn’t make any sense :/… What do I have to do with this sData?

EDIT
My JQuery code now:

        $('#form').submit( function() {
            var sData = $('input', oTable.fnGetNodes()).serialize();
            alert( "The following data would have been submitted to the server: \n\n"+sData );

        } );

        oTable = $('#table1').dataTable();

My form:

<form id="form" action="" method="post">
<button type=submit name=addtolist>Button</button>

When I submit the form, I receive the alert mentioned above (but now with id1=1&id2=2 etc.).

PHP:

if (isset($_POST['addtolist']) ) 
{
    $x=1;
    $values=array('+sData');
    while(isset($_POST['id'.$x]))
    {
        $values[$x-1]=$_POST['id'.$x];
        $AddToListQuery = "
                        INSERT INTO
                        reservelist
                       (itemid, projectid)
                        VALUES
                       ('". mysql_real_escape_string($_POST['id'.$x]) ."', '" . mysql_real_escape_string($_SESSION['projectidtoreserve']) . "')
                       ";
        $x++;
    }
    mysql_query($AddToListQuery, $conn);
    header('Location: pm_reserving.php');
    exit();
}

This PHP loop is probably a big fail…But I need this sData var to put into the PHP variable… Oh god I’m so lame at this.

Answer 1

if you are passing sData using GET or POST, the way to recover it is like this:

If the URL is (for example in GET): www.url.com?key=value&key2=value2

In PHP you read it as:

$value=$_GET['key'];  // if you used POST it's $value=$_POST['key'];
$value2=$_GET['key2'];

So in your example it would be:

$id1=$_GET['1'];
$id2=$_GET['2'];
....

As you can see it is not ideal, cause you need to know the id to read the id… a much better format for sData would be:

id1=1&id2=2&id3=10&id4=18

That you would read:

$id1=$_GET['id1']; //gets a 1
$id2=$_GET['id2']; //gets a 2
$id3=$_GET['id3']; //gets a 10
$id4=$_GET['id4']; //gets a 18

An easy way to read it would be:

$x=1;
$values=array();
while(isset($_GET['id'.x])){
     $values[$x-1]=$_GET['id'.x];
     $x++;
}

echo "Number of Ids=".($x-1);
print_r($values);

EDIT: How all this works if you are submining a form.

<form id="form" action="example.php" method="post">
<input type="text" id="id1" name="id1" value="1" />
<input type="text" id="id2" name="id2" value="2" />
<button type=submit name=addtolist>Button</button>

If you just submit this, the variables id1 and id2 will be submited using POST to example.php. Now this PHP should do this:

example.php

$x=1;
$values=array();
while(isset($_POST['id'.x])){
     $values[$x-1]=$_POST['id'.x];
     $x++;
}

echo "Number of Ids=".($x-1);
print_r($values);

This will work even if you use more variables if they are all named id+number, where number keeps increasing by 1 in each new variable (id1, id2, id3, id4 ….)

After this the $values array cointains all the variables passed! you can use them in query or wherever you need.