PHP - Extracting Subarray From A Multidimensional Array

Hi, I'm trying to explode an array into a multidimensional array using <br /> tags as splitters but just can't get the syntax right! I can do lines of the array one by one, but not the whole lot at once. I'd really appreciate a quick example of an explode inside an array.

$myarray looks something like this with print_r:
(
    [0] => 
    [1] => some_html<br />some_html<br />some_html<br />
    [2] => some_html<br />some_html<br />some_html<br />
    [3] => some_html<br />some_html<br />some_html<br />
)

and I want to turn it into this:
(
    [0] => 
    [1] =>
     [0]some_html
     [1]some_html
     [2]some_html
    [2] => 
     [0]some_html
     [1]some_html
     [2]some_html
    [3] =>
     [0]some_html
     [1]some_html
     [2]some_html
)

I've tried this
$myarray = explode ("<br />", $myarray);
but it doesn't work …

It doesn't matter too much if there's are a few empty lines in the array from the final <br /> tags.

Many thanks, as ever, for any help.

Hey guys i have a array i made and im wanting to grab a random value out of the array.
The only way i can see to do this looking at the list of array functions is i need to random a key first?
and then return the value assigned to the random key i just generated?
I only see a function that lets me do the opposite. array_search()

so now that i have generated a random key how do I grab just the value from the array using the random key. or is there a function i can just random value?

$explode_names = explode(" ", $planet_names);

$random_key_name = (array_rand($explode_names, 1));


echo $random_key_name;

Hi - I have an array where one of the values delivers a string. Here is the output from a print_r($pickupdates):

Code: [Select]
Array
(
    [0] => Array
        (
            [location] => Clearwater
            [TheDates] => 1311746700,1321746641,1331668779
        )

    [1] => Array
        (
            [location] => Canmore
            [TheDates] => 1311746700,1321746641,1331746641
        )

    [2] => Array
        (
            [location] => Collingwood
            [TheDates] => 1311746700,1321746641,1331746641
        )

    [3] => Array
        (
            [location] => Varsity
            [TheDates] => 1321746641,1330746700,1331746700
        )

The challenge is to get the location and TheDates  into a nice HTML table which would look like this:

Code: [Select]
LOCATION          DATE 1            DATE 2              DATE 3

Clearwater         April 1              May 1                June 1

Varsity               April 2              May 2                June 2

Collingwood        April 3              May 3                June 3


Canmore        April 4              May 4                June 4


Ok - Now I am stuck, I need to be able to uniquely identify each date that is associated with the location such that I can run a foreach() on then so I can populate the table properly. I tried using list() and explode. List does not separate the dates and explode needs a string not an array.

I'm really stuck - a very big Heartfelt thanks to anyone who can steer me in the right direction.

MANY THANKS !

Hi guys,
This is my problem:
I have a csv file let's say have these values:

blue,1,2,3,4
red,8,5,6,7

I need to add thes values into a 2d array
to be able to use like this:
colors[1][2]=2
colors[2][4]=7

Where my first number is the row and the second number is the value within that row.

This is what I got so far

<?PHP
$i=0;
$j=0;
$file_handle = fopen("color-list.csv", "r");
while (!feof($file_handle) )
   {
   $colors = fgetcsv($file_handle, 10000);

for ($j=0; $j<=4; $j++)
               {
               $row[$i][$j]=$colors[$j];
                                        print row[$i][$j];
               }
$i++;
?>

For some reason this doesn't work. Maybe I am declaring the arrays wrong.

Thank you!

Folks,

I have an Array as shown in the below Structre (An array has multiple parents and childs)

Array $productlist


Quote

Array
{
1 => A
2 => B
3 => C

}



Array
{
1 => A
2 => B
3 => C
4 => D
5 => E
}



Array
{
1 => A
2 => B
3 => C
4 => D
5 => E
6 => E
7 => E
8 => E
}




$productlist Array can have N numbers of Parents array as shown in above example, (above its 3 it can be anything).

All i want is, i want to print_r only the last Parent rray and all its child elements. So in this case it will be:


Quote

Array
{
1 => A
2 => B
3 => C
4 => D
5 => E
6 => E
7 => E
8 => E
}




HOw can i achieve this with PHP, i tried even count() but its not working not even array_pop().

Can someone help me with this?

Regards,
Natasha

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'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 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 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 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: -

Hi have an array() in which I would like to manipulate certain elements:

Code: [Select]
Array
(
    [TESCO] => Array  (
            [Veg] => Array (
                    [Potatoe] => 12
                    [Cabbage] => 24
                    [Cucumber] => 56
                )
            [Meat] => Array (
                    [Chicken] => 54
                    [Beef] => 89
                )
        )

    [ASDA] => Array (
            [Veg] => Array (
                    [Potatoe] => 12
                    [Cabbage] => 24
                    [Cucumber] => 56
                )
            [Meat] => Array (
                    [Chicken] => 23
                    [Beef] => 90
                )
        )
)

How would I go about adding the price of my meat section together e.g. Chicken + Beef from ASDA = 113

Also how to add/remove elements from Meat/Veg?
Like adding Pork

Cheers

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 ) )

Trying to retun an array which gets a file from a directory and then returns the filename as the key and the complete file url as the value but when returning it it prints out "Array" for each file in the directory rather than the file name:
Doing this in wordpress.

Code: [Select]
function wsme_select_css_theme(){
$alt_css_template_path = WSME_THEME_CSS; // Define path to files
$alt_widgets_template = array(); // set array
$out = ''; // Set var

if ( is_dir($alt_css_template_path) ) { // If directory exists
if ($alt_css_template_dir = opendir($alt_css_template_path) ) { //opens directory
while ( ($alt_css_template_file = readdir($alt_css_template_dir)) !== false ) { //if files are in the directory
if(stristr($alt_css_template_file, ".css") !== false) { //if the files are .css files
$out[] = array($alt_css_template_file => WSME_THEME_CSS.'/'.$alt_css_template_file); //create the array(filename => file path) for each file in the directory
}
}
}
return $out; // return array
}
}


Code: [Select]
array(
            'name' => 'Style',
            'id' => WS_THEME_PREFIX . '_style',
            'headings' => array(
                array(
                    'name' => 'Theme CSS',
                    'options' => array(
                        array('name' => 'Homepage',
                            'desc' => ' select the css file of the theme you want for your site',
                            'id' => WS_THEME_PREFIX . '_theme_css',
                            'value' => '',
                            'options' => wsme_select_css_theme(),
                            'type' => 'select'
                        )
                    )
                )
            )

Any suggestions?

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.

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.