PHP - Calculations On Multidimensional Array

Hi everybody,

I generally find any assistance that I need on various sites, but this one has me stumped. I'm not overly advanced with my use of arrays, so I'd like some help here if anyone knows what I am looking for.

I have a form that I would like to submit to a MySQL database. In that form, there is the ability to add up to 3 harddrives:
Code: [Select]
Brand: <input type="text" name="hdds[0][hddbrand]" id="hddbrand"><br/>
Model and/or size,type: <input type="text" name="hdds[0][hddtype]" id="hddtype"><br/>
SN: <input type="text" name="hdds[0][hddsn]" id="hddsn"><br/>
Notes: <input type="text" name="hdds[0][hddnotes]" id="hddnotes" size="50">
Obviously the next harddrive would be hdds[1][hddbrand], etc.

I am having an awful time looping through this to get more than 1 harddrive's information, however. I've tried foreach embedded in foreach and been messing around with this for a good 3-4 hours now and I feel like I am just missing something.

I've got this right now to debug:
Code: [Select]
foreach($_POST['hdds'] as $key => $a) {
$hddbrand = $a['hddbrand'];
}
my print_r($a) comes up with the following:
Code: [Select]
Array ( [hddbrand] => Toshiba [hddtype] => Shaba 500gb [hddsn] => 5fu8bvw4 [hddnotes] =>none ) 1
Good. That's what I want. But I need some help constructing my array/loop to get the values of more than 1 drive should I have to enter information for more than 1 drive.

I feel like I am close, but I am just not getting what I need. I have not had to work with multidimensional arrays before and they are proving to be more trickier than I expected. Any help would be enormously appreciated!

Patrick

I need to extract data from a CSV file and insert it into a MySQL database. I am able to extract the data, however I cannot figure out how to group it.

Sample File:
01   ISBN  Name of Book   Price
02   ISBN  Name of Book   Price

So far I have an array with the entire file (reading file with PHP):

Array ([0] => 01 [1] => 12345678X [2] => Title [3] => 120.00 ...etc.

How can I modify the array to create groups of four for each item? Each item is its own array?

I am trying to store all the elements of my tree in an array.My code produces multi dimensional array, but i want it to be one dimensional. How can i get it ?

Code:-
Code: [Select]
function tree_gather($node)   //Function to calculate count
  {
    $sql = "SELECT lchild,rchild FROM tree WHERE parent = '$node'";
    $execsql = mysql_query($sql);
    $array = mysql_fetch_array($execsql);
   
    if(!empty($array['lchild']) || !empty($array['rchild']))
    {
   
      $child[] = $array['lchild'];
      $child[] = $array['rchild'];
      $child[] = tree_gather($array['lchild']);
      $child[] = tree_gather($array['rchild']);
     
    }
     return $child;
  }
Result:-
Code: [Select]
Array
(
    [0] => 2
    [1] => 3
    [2] => Array
        (
            [0] => 4
            [1] => 5
            [2] => Array
                (
                    [0] => 10
                    [1] => 11
                    [2] =>
                    [3] =>
                )

            [3] => Array
                (
                    [0] => 8
                    [1] => 9
                    [2] =>
                    [3] =>
                )

        )

    [3] => Array
        (
            [0] => 7
            [1] => 6
            [2] => Array
                (
                    [0] => 15
                    [1] => 14
                    [2] => Array
                        (
                            [0] => 16
                            [1] => 17
                            [2] =>
                            [3] =>
                        )

                    [3] =>
                )

            [3] => Array
                (
                    [0] => 13
                    [1] => 12
                    [2] =>
                    [3] =>
                )

        )

)

Table: -

<?php
$_SESSION["cart_item"] = array(
'cart_item' => array(
'id' => $id,
'product_name' => $product_name
));
}
$cart_items = $_SESSION["cart_item"];

foreach ($cart_items as $cart_item) {
echo $cart_item["id"] . $cart_item["product_name"];
}
?>

I have tried several variations of the foreach loop like the one above and I mostly get the error message: Notice: Array to string conversion. When I use:
var_dump($cart_items);

I get the following output:

array(1) { ["cart_item"]=> array(2) { ["id"]=> array(2) { [0]=> string(1) "2" [1]=> string(1) "3" } ["product_name"]=> array(2) { [0]=> string(19) "Adult Female Bike" [1]=> string(18) "Kids Unisex Bike" } } }

Hey guys, quick question.

I have an array that looks like (blow). How can i sort it based on array[0][3], the #'s 1,2,3,4,5,6 are what i want to sort by in ASC order.

Code: [Select]
<?php

Array ( 
[0] => Array ( 
[1] => Link Name 
[2] => URL
[3] => 1 
[4] => fy 
) 
[1] => Array ( 
[1] => Link Name 
[2] => URL
[3] => 2 
[4] => fy 
) 
[2] => Array ( 
[1] => Link Name 
[2] => URL
[3] => 3 
[4] => fy 
) 
[3] => Array ( 
[1] => Link Name 
[2] => URL
[3] => 4 
[4] => fy 
) 
[4] => Array ( 
[1] => Link Name 
[2] => URL
[3] => 5 
[4] => fy 
) 
[5] => Array ( 
[1] => Link Name 
[2] => URL
[3] => 6 
[4] => fy 
)

?>

Thanks for the help.

how to create multidimensional array in php

I am a beginner, so forgive me all to whom this is trivial...

I have an array, generated from simpleXML object, trying to parse...  The array is not symmetrical & I am having trouble finding the right code to make it work.  Help & comments are welcomed..

Here is the raw array with print_r:
Code: [Select]
Array
(
    [Area] => Array
        (
            [0] => Array
                (
                    [Name] => Basement
                    [Id] => 1
                    [Room] => Array
                        (
                            [0] => Array
                                (
                                    [Name] => Equipment
                                    [Id] => 1
                                )

                            [1] => Array
                                (
                                    [Name] => Theater
                                    [Id] => 9
                                )

                            [2] => Array
                                (
                                    [Name] => Wine Cellar
                                    [Id] => 10
                                )

                        )

                )

            [1] => Array
                (
                    [Name] => 1st Floor
                    [Id] => 2
                    [Room] => Array
                        (
                            [0] => Array
                                (
                                    [Name] => Kitchen
                                    [Id] => 2
                                )

                            [1] => Array
                                (
                                    [Name] => Main Hall
                                    [Id] => 4
                                )

                            [2] => Array
                                (
                                    [Name] => Foyer
                                    [Id] => 8
                                )

                            [3] => Array
                                (
                                    [Name] => Stone Room
                                    [Id] => 14
                                )

                            [4] => Array
                                (
                                    [Name] => Garage Foyer
                                    [Id] => 16
                                )

                            [5] => Array
                                (
                                    [Name] => Dining Room
                                    [Id] => 17
                                )

                            [6] => Array
                                (
                                    [Name] => Living Room
                                    [Id] => 18
                                )

                            [7] => Array
                                (
                                    [Name] => Hearth Room
                                    [Id] => 19
                                )

                            [8] => Array
                                (
                                    [Name] => Office
                                    [Id] => 20
                                )

                            [9] => Array
                                (
                                    [Name] => Powder Room
                                    [Id] => 21
                                )

                        )

                )

            [2] => Array
                (
                    [Name] => 2nd Floor
                    [Id] => 3
                    [Room] => Array
                        (
                            [0] => Array
                                (
                                    [Name] => Landing
                                    [Id] => 7
                                )

                            [1] => Array
                                (
                                    [Name] => Master Bedroom
                                    [Id] => 11
                                )

                            [2] => Array
                                (
                                    [Name] => Nannys Room
                                    [Id] => 13
                                )

                            [3] => Array
                                (
                                    [Name] => East Kids Bed
                                    [Id] => 27
                                )

                            [4] => Array
                                (
                                    [Name] => West Kids Bed
                                    [Id] => 28
                                )

                            [5] => Array
                                (
                                    [Name] => Kids Bath
                                    [Id] => 29
                                )

                            [6] => Array
                                (
                                    [Name] => Robs Closet
                                    [Id] => 31
                                )

                            [7] => Array
                                (
                                    [Name] => Kelli's Office
                                    [Id] => 32
                                )

                        )

                )

            [3] => Array
                (
                    [Name] => 3rd Floor
                    [Id] => 7
                    [Room] => Array
                        (
                            [Name] => Bonus room
                            [Id] => 5
                        )

                )

            [4] => Array
                (
                    [Name] => Outside Areas
                    [Id] => 8
                    [Room] => Array
                        (
                            [0] => Array
                                (
                                    [Name] => Veranda
                                    [Id] => 22
                                )

                            [1] => Array
                                (
                                    [Name] => Back Outdoor
                                    [Id] => 23
                                )

                            [2] => Array
                                (
                                    [Name] => Christmas Lights
                                    [Id] => 33
                                )

                            [3] => Array
                                (
                                    [Name] => Front Outdoor
                                    [Id] => 34
                                )

                            [4] => Array
                                (
                                    [Name] => Garage
                                    [Id] => 35
                                )

                            [5] => Array
                                (
                                    [Name] => Poolhouse Kitchen
                                    [Id] => 24
                                )

                            [6] => Array
                                (
                                    [Name] => Poolhouse Utility
                                    [Id] => 25
                                )

                        )

                )

        )

)
Here is the code:
Code: [Select]
foreach($xml2['Area'] as $v){
echo $v['Name'],' <br>';
foreach($v['Room'] as $v2){
echo '  ',$v2['Name'],' <br>';
}
}
Here is the result:
Code: [Select]
Basement
  Equipment
  Theater
  Wine Cellar
1st Floor
  Kitchen
  Main Hall
  Foyer
  Stone Room
  Garage Foyer
  Dining Room
  Living Room
  Hearth Room
  Office
  Powder Room
2nd Floor
  Landing
  Master Bedroom
  Nannys Room
  East Kids Bed
  West Kids Bed
  Kids Bath
  Robs Closet
  Kelli's Office
3rd Floor
  B
  5
Outside Areas
  Veranda
  Back Outdoor
  Christmas Lights
  Front Outdoor
  Garage
  Poolhouse Kitchen
  Poolhouse Utility
The problem lies with the "3rd Floor" which should contain "Bonus Room" as the room.  I know that this is the only element that has no "Rooms" array, but I can't figure out how to code the trap for it.  With this data, the condition could exist anywhere, not just my example, but I am stumped with the non symmetrical array that I am unfamiliar with.  Any help?  Thanks. --akaweed

Hey guys I am trying to make a simple shopping cart but I can't seem to wrap my head around this.

I have $_SESSION['cart'] as an array and I can add an item to it and then echo specific elements of the item like so

echo $_SESSION['cart']['0']['Name'];

I can not seem to figure out how to add a second item to the array so I can do something like

echo $_SESSION['cart']['1']['Name'];

and it will echo the second item that I 'added' to my cart?

Thanks I hope that makes sense.

Hi All

I'm new to php and I have a multidimensional array set up which I need to sort for a results list from an assessment.

The array is $gradout['name']['userid']=score.

I need to sort the array by score in a decending order. 

['name'] is a string and ['userid'] is a numeric.

I've tried looking at the php manual but It's just confusing me.  Can anyone explain to me in laymans terms what I need to do and why.

I have a array as follows and I want to look by key where the key is 'ABCD', 'EFGH', etc.. I am using foreach but it is not working. How can I accomplish this?

Code: [Select]
Array
(
    [0] => Array
        (
            [ABCD] => Array
                (
                    [venue_id] => 1003
                    [has_dining] => X
                    [table_count] => 0
                    [serves_alcohol] => X
                )

        )

    [1] => Array
        (
            [EFGH] => Array
                (
                    [venue_id] => 1003
                    [has_dining] => X
                    [table_count] => 0
                    [serves_alcohol] => X
                )

        )
)

Hi, I have an array of type array_name[roll_number][aggregate_marks]. How do I sort such array on 'aggregate_marks'? My attempts on sort, asort haven't worked.

Ok I'm really lost here, what I need to do is shuffle a 2D array. Now when I shuffle them I want to keep both columns aligned to say. Like I only want the index to change.

Kinda like this:

Index         Id           URL
0                [2          www.e] I want the bracketed stuff to stay aligned.
1                [6          www.b]
2                [12        www.c]
3                [60        www.h]

But I want them in different positions on every page load. So when I echo array[1][0] it will always be different. Is this even possible?

I have the following multidimensional array;

Array
(
    => Array
        (
            [value] => Alarm
            [safe] => Alarm
            [view] => Alarm
        )

    [1] => Array
        (
            [value] => Deadlocks
            [safe] => Deadlocks
            [view] => Deadlocks
        )

    [2] => Array
        (
            [value] => Security Doors
            [safe] => Security Doors
            [view] => Security Doors
        )

)

I'm trying to implode the array to end up with an output like "Alarm, Deadlocks, Security Doors".

But I cannot for the life of me work out the correct PHP.  I'm assuming i need some foreach loop? Any help would be greatly appreciated.

Code: [Select]
while($row=mysql_fetch_assoc($query)) {   
   $id = $row['id'];
   $col1 = $row['name1'];
   $col2= $row['name2'];
   $col3= $row['name3'];

 ${"$id"} = array("$col1","$col2","$col3");
    ${"$s".$i}[] = ${"$id"};
    }
This is just a brief example of what i'm trying to accomplish,$i is incremented somewhere else. I'm trying to implode the arrays in the array. So below i have imploded the main array but how do i implode the other arrays?

Code: [Select]
for($i=0;$i<11;$i++) {
$array = ${"s" . $i};
$outcomes = implode("",$array); //implodes main array

}

I am trying to write a dirty script that removes duplicate rows from a multidimensional array.

I want to be able to edit the function and spit the duplicates out to a CSV file.

Here is my test file:


$fullArray = array(array('Jim', 'Jones'),
array('Pete', 'Pumpkin'),
array('Barak', 'Obama'),
array('Jason', 'Newstead'),
array('Toby', 'Keith'),
array('Jim', 'Jones'),
array('Jim', 'Nelson'));


echo "<h1>Original</h2>";
for($i=0; $i<count($fullArray); $i++) {
echo $fullArray[$i][0] . " " . $fullArray[$i][1] . "<br />";
}

echo "<h2>Checked</h2>";
$cleanArray = array();
$cay = array();
$nn=0;
$dup=0;
// Loop the entire input array
foreach ($fullArray as $index => $item) {
echo "foreach index:$index<br>";

        // Start an internal pointer
for ($f=0; $f<count($fullArray); $f++) {
echo "for $f ";
                // if the index is lower or the same as the pointer, skip it to cut down on time
if ($f > $index) {
                        // if the rows are the same...
if($fullArray[$f][0] == $item[0] && $fullArray[$f][1] == $item[1]) {
echo "$item[0] DUP<br>";
                                // remove it from the array
$cay = array_push($cleanArray, array($item[0], $item[1]));
array_pop($fullArray[5]);

$dup++;
} else {
                                // not a duplicate
echo " not a dup<br>";
}

} else {
echo "ON THIS ONE<br>";
}
}
echo "<br><br>";
}
echo"<br>$dup duplicates found<br><br>";
print_r($fullArray);
echo "<br /><br>";
// print_r($item);
print_r($cleanArray);
?>


When I spit out the new fullArray variable, it still has an element from the duplicate record.

This is what I get for the output of the full array after the duplicate was removed:
Quote

Array ( => Array ( => Jim [1] => Jones ) [1] => Array ( => Pete [1] => Pumpkin ) [2] => Array ( => Barak [1] => Obama ) [3] => Array ( => Jason [1] => Newstead ) [4] => Array ( => Toby [1] => Keith ) [5] => Array ( => Jim )[/b] [6] => Array ( => Jim [1] => Nelson ) )