PHP - Array Into Multidimensional Array

I am looking at the code below:

Code: [Select]
$array = array(
                array(
                1, 2
          ),
          'a' => array(
                'b' => 1,
                'c'
        )
);       
Is this an example of a multidimensional array? If so how would I access the value of 1 from key b?

Also would the next line ('c') be automatically assigned to the asociative key of c?

I've been working on some code to:
1. Search a db for rows that have a particular "position" value
2. Search the same db for rows that have a particular "langs" value
3. Compare the two arrays resulting for 1 and 2
4. Create a multidimensional array $langsarray[langs][question id] if 3 is true.
5. For each langs array in $langsarray pick a random, non-duplicate value and add it to $qarray for a maximum of 12 elements (3 for each langs).

What I have works about 95%.

The problem is, in the first langs array, one of the 3 randomly picked values is almost always empty, and its not always the same element. Sometimes its the first, sometimes its the third, sometimes its the second...

I think I've narrowed down the issue to line 44 ($qtemp = ...). If I change the min/max values for the mt_rand function, it behaves slightly differently. Any help is much appreciated! Thanks in advance.

Code:
//Include MYSQL class and authentication information
require_once('./include/mysql.php');
require_once('./include/global.php');

//Grab apptype from URL querystring
$apptype = $_GET['apptype'];

//Declare arrays
$qarray = array();
$posarray = array();
$langs = array();
$langsarray = array();

//Get id's of all questions pertaining to position type
$sql = 'SELECT * FROM qa WHERE position = "' . $apptype . '"';
$result = $db->query($sql) or die(mysql_error());
while ($row = $result->fetch()) {
$posarray[] = $row['id'];
}

//Determine what types of questions should be pulled
if ($apptype == 'fed'){
$langs = array('html','css','javascript','jquery');
}
else if($apptype == 'bed'){
$langs = array('php','asp','javascript','jquery');
}

//Get each question of each language that matches the position type and store it in the multidimensional array $langsarray[language][question id]
$z = 0;
while ($z < count($langs)){
$sql = 'SELECT * FROM qa WHERE langs = "' . $langs[$z] . '"';
$result = $db->query($sql) or die(mysql_error());
while ($row = $result->fetch()) {
if (in_array($row['id'],$posarray)){
$langsarray[$langs[$z]][] = $row['id'];
}
}

//Takes a random question id from the current language ($z) and adds it to the final question array.
$y = 0;
while ($y < 3) {
//$qtemp = $langsarray[$langs[$z]][mt_rand(0,count($langsarray[$langs[$z]]))];
$qtemp = $langsarray[$langs[$z]][mt_rand(0,count($posarray))];

if (!in_array($qtemp,$qarray)){ 
$qarray[] = $qtemp;
echo $qtemp . ', ';
$y++;
}
}
echo $langs[$z];
print_r( $langsarray[$langs[$z]]); echo '<br />';
$z++;
}
        echo '<br />';
print_r($qarray);


Output:

5, , 2, htmlArray ( => 1 [1] => 2 [2] => 3 [3] => 4 [4] => 5 )      <--Problem
7, 6, 9, cssArray ( => 6 [1] => 7 [2] => 8 [3] => 9 [4] => 10 )
14, 15, 13, javascriptArray ( => 11 [1] => 12 [2] => 13 [3] => 14 [4] => 15 )
21, 17, 20, jqueryArray ( => 16 [1] => 17 [2] => 18 [3] => 19 [4] => 20 [5] => 21 )

Array ( => 5 [1] => [2] => 2 [3] => 7 [4] => 6 [5] => 9 [6] => 14 [7] => 15 [8] => 13 [9] => 21 [10] => 17 [11] => 20 )   <-- Final $qarray

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.

<?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" } } }

I'm trying to create a multidimensional array of movies organized by genre. This should take the form of an associative array with genres as keys.  Each of the arrays elements should be an array containing movie names.

This is what I have:
<?php
$movies = array(
        array("SF" => "", "Terminator", "Soylent Green", "I Robot", "frankenstein"),
         array("horror" => "exorcist", "IT", "frankenstein"),
         array("comedy" => "holy grail", "blazing saddles", "young frankenstein")
    );
   
//echo $movies[0][0]."<br>";
//echo $movies[1][0]."<br>";
//echo $movies[2][0];

foreach ($movies as $c) {
        while (list($k, $v) = each ($c)) {
echo "$k ... $v <br/>";
        }
}
?>

this is the output:
SF ...
0 ... Terminator
1 ... Soylent Green
2 ... I Robot
3 ... frankenstein
horror ... exorcist
0 ... IT
1 ... frankenstein
comedy ... holy grail
0 ... blazing saddles
1 ... young frankenstein

you'll see Terminator is only listed as element 0 because there's an empty string in front of it. The first item in the array is liated as the value to the key while the second value is listed as element 0.  It doesn't seem right to me.

how to create multidimensional array in php

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 ) )

Hi freaks,

Got a simple one for ya, I THINK?

I have a multi-array that resembles this..
Code: [Select]
$_SESSION["book_array"] = array(0 => array("plantID" => $plantID, "botanicalName" => $botanicalName, "commonName" => $commonName, "use" => $use));

I would like to sort it by the botanicalName key of the inner array before I call the forech loop that renders the display so that after it renders the table the items will be seen alphabetically, code below..
Code: [Select]
<?php 
$bookOutput = "";
//$plant_use_array = '';
if (!isset($_SESSION["book_array"]) || count($_SESSION["book_array"]) < 1) {
    $bookOutput = '<tr><td colspan="4"><h6>Your Book is EMPTY!</h6></td></tr>';
} else {
// Start the For Each loop
$i = 0; 
    foreach ($_SESSION["book_array"] as $each_item) { 
$plantID = $each_item['plantID'];
$botanicalName = $each_item['botanicalName'];
$botanicalName = stripslashes($botanicalName);
$commonName = $each_item['commonName'];
$commonName = stripslashes($commonName);
$use = $each_item['use'];
//$x = $i + 1; 
// Dynamic table row assembly
$bookOutput .= "<tr>";
$bookOutput .= '<td><a href="plant_details.php?plantID=' . $plantID . '" id="bodyLink">' . $botanicalName . '</a></td>';
$bookOutput .= '<td>' . $commonName . '</td>';
$bookOutput .= '<td><strong>' . $use . '</strong></td>';
$bookOutput .= '<td><form action="book.php" method="post"><input name="removeBtn" type="submit" value="Remove"/><input name="index_to_remove" type="hidden" value="' . $i . '" /></form></td>';
$bookOutput .= '</tr>';
$i++; 
    } 
}
?>

Any help would be much appreciated!  Thanks in advance.

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

How do I go about splitting a multidimensional array into seperate smaller ones?

Currently I have $grade[region][userid]=value.

I'd like to split as $region1[userid]=value $region2[userid]=value $region3[userid]=value $region4[userid]=value $region5[userid]=value $region6[userid]=value
Is there an inbuilt function for this?

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 want to create an array based on data in a multidimensional array. Take, for example:

$table[1] = array('husband' => array ('firstname'=> 'Albert',
                                                           'lastname' => 'Einstein',
                                                           'age'      => 129),
                           'wife'         => array ('firstname' => 'Mileva',
                                                           'lastname'  => 'Einstein',
                                                           'age'       => 128));

What would be the best approach, when you want to
create an array with only the last names or the ages? Are there some
things like wildcards in the PHP array universe to skip the first array level?

Any suggestion is very appreciated. I tried several strategies, but ended up creating the same mulitdimensional array as above.

Hi guys, I'm working on a project and I can't wrap my head around on a calculation that needs to be done on a multidimensional array. Quick background, it's a hotel benchmarking tool and I need to calculate the market penetration index (MPI). I have an array with 3 main arrays. First 2 are the hotels which are being compared and the last one is the MPI array.

Each array contains an array  for every month the user selects. Inside THAT array is data that needs to be used for calculations.
Here is an example:
Code: [Select]
Array
(
    [Competitive set] => Array
        (
            [Sep 11] => Array
                (
                    [0] => Array
                        (
                            [minmonth] => 2011-09-01
                            [maxmonth] => 2011-09-01
                            [nrcheck] => 13
                            [data] => 67.6
                        )

                )

            [Oct 11] => Array
                (
                    [0] => Array
                        (
                            [minmonth] => 2011-10-01
                            [maxmonth] => 2011-10-01
                            [nrcheck] => 13
                            [data] => 63.6
                        )

                )

            [Nov 11] => Array
                (
                    [0] => Array
                        (
                            [minmonth] => 2011-11-01
                            [maxmonth] => 2011-11-01
                            [nrcheck] => 13
                            [data] => 59.2
                        )

                )

            [Dec 11] => Array
                (
                    [0] => Array
                        (
                            [minmonth] => 2011-12-01
                            [maxmonth] => 2011-12-01
                            [nrcheck] => 13
                            [data] => 54.6
                        )

                )

        )

    [Test] => Array
        (
            [Sep 11] => Array
                (
                    [0] => Array
                        (
                            [minmonth] => 2011-09-01
                            [maxmonth] => 2011-09-01
                            [nrcheck] => 89
                            [data] => 71.5
                        )

                )

            [Oct 11] => Array
                (
                    [0] => Array
                        (
                            [minmonth] => 2011-10-01
                            [maxmonth] => 2011-10-01
                            [nrcheck] => 89
                            [data] => 67.0
                        )

                )

            [Nov 11] => Array
                (
                    [0] => Array
                        (
                            [minmonth] => 2011-11-01
                            [maxmonth] => 2011-11-01
                            [nrcheck] => 91
                            [data] => 63.1
                        )

                )

            [Dec 11] => Array
                (
                    [0] => Array
                        (
                            [minmonth] => 2011-12-01
                            [maxmonth] => 2011-12-01
                            [nrcheck] => 89
                            [data] => 57.5
                        )

                )

        )

    [MPI] => Array
        (
            [Sep 11] => Array
                (
                    [0] => Array
                        (
                            [minmonth] => 2011-09-01
                            [maxmonth] => 2011-09-01
                            [nrcheck] => 89
                            [data] => 71.5
                        )

                )

            [Oct 11] => Array
                (
                    [0] => Array
                        (
                            [minmonth] => 2011-10-01
                            [maxmonth] => 2011-10-01
                            [nrcheck] => 89
                            [data] => 67.0
                        )

                )

            [Nov 11] => Array
                (
                    [0] => Array
                        (
                            [minmonth] => 2011-11-01
                            [maxmonth] => 2011-11-01
                            [nrcheck] => 91
                            [data] => 63.1
                        )

                )

            [Dec 11] => Array
                (
                    [0] => Array
                        (
                            [minmonth] => 2011-12-01
                            [maxmonth] => 2011-12-01
                            [nrcheck] => 89
                            [data] => 57.5
                        )

                )

        )

)
Currently the  'data' for MPI is wrong. That needs to become the data of the first array divided by the data of the second array and multiplied by 100 (percentage).

How would I go about doing that? The foreach loops are a bit too big for me on this one.

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
                )

        )
)