PHP - Changing Values Of A Multidimensional Array?

Hi all,

I hope someone can help me out here as I think I am close but am not sure where to go from here.  The problem is:
I have a cms where a user can see a list of photos in the gallery.
I provide them the ability to select what photos they want to appear on a particular webpage.
The problem I have is that the user wants to be able to put the photos in whatever order they choose.

So, I have a form (see attached), the html code is:

          <table width="566px" cellspacing="0" border="0">              <tr>
                <td width="33%">
                  <div class="serviceCell">
<input type='checkbox' checked='checked' name='photos[][0]' value='119' />&nbsp;Bathroom Sin...
<img src="./images/help.gif" title="Enter an integer to signify the order in which this image will appear on the webpage." alt="Enter an integer to signify the order in which this image will appear on the webpage."/>&nbsp;<input type="text" size="2"  name="photos[][1]" value="0"/>                  </div>
                </td>
                <td width="33%">
                  <div class="serviceCell">
<input type='checkbox' checked='checked' name='photos[][0]' value='113' />&nbsp;Courtyard 1
<img src="./images/help.gif" title="Enter an integer to signify the order in which this image will appear on the webpage." alt="Enter an integer to signify the order in which this image will appear on the webpage."/>&nbsp;<input type="text" size="2"  name="photos[][1]" value="0"/>                  </div>
                </td>
                <td width="33%">
                  <div class="serviceCell">
<input type='checkbox' name='photos[][0]' value='114' />&nbsp;Courtyard 2
<img src="./images/help.gif" title="Enter an integer to signify the order in which this image will appear on the webpage." alt="Enter an integer to signify the order in which this image will appear on the webpage."/>&nbsp;<input type="text" size="2"  name="photos[][1]" value=""/>                  </div>
                </td>
              </tr>...

Now, lets assume that the user ticked the box next to 'Courtyard 2' and entered an integer '1' in the input box to signify that this image should be displayed 1st on the chosen webpage.  These 2 values go into the multidimensional array (photoid, ranking) and are submitted in the form to php in the photos[][] array.

But here is where I have the problem.  I am trying to extract the values from the array and then do an insert to a table in mysql.  My syntax must be wrong somewhere so I am asking anyone to please offer any advice:

  if (isset($_REQUEST['submitted'])){   
       $photos = $_REQUEST['photos'];
...

    if(!empty($photos)){
       foreach($photos as $photoID){
         $sql = "INSERT IGNORE INTO menuItemPhotos
                SET photoid='$photoID[0]', menuItemid='$id', ranking='$photoID[1]'";
        $ok = @mysql_query($sql); // execute the query
      } // End of foreach($photos as $photoID){
    } // End of if(!empty($photos)){

Thanks
Conor

[attachment deleted by admin]

Hi

Just learning PHP and I'm struggling with a very simple problem.

I'm playing around with arrays as i figure they're one of the most important things to know inside out but I can't work out how to change the value of an array element via a loop. I can obviously do it if I just directly write $cars[2] = "test" but not having any luck with the loop.

I've tried using "foreach" and passing a new value to the $value variable but when i do a print_r the values in the array are unchanged.

Code: [Select]



$cars[0]="Saab";
$cars[1]="Volvo";
$cars[2]="BMW";
$cars[3]="Toyota";



foreach ($cars as $key => $value)
  {

$value = "TEST";
echo $key . " " . $value . "<br />";

  }

print_r($cars)

I then tried using a for loop

Code: [Select]
for ($i=0; $i <= count($cars); $i++)

{

echo $cars[$i];

$cars[$i] = "2";


}

But this code just threw up a fatal error as follows:

"Fatal error: Allowed memory size of 33554432 bytes exhausted (tried to allocate 16 bytes) in /home/zzzzzzzz/public_html/php_testing/arrays.php on line 27"

So would someone be kind enough to explain where i'm going wrong and why i get the fatal error on the second for loop.

Thanks

Drongo

Ok I am testing foreach in an array as my practice. I wonder how can I assign values in the key of the array..

Here's the code


Code: [Select]
<?php


                $username = me_mysql_prep(trim($_POST['username']));
$first_name = me_mysql_prep(trim($_POST['first_name']));
$last_name = me_mysql_prep($_POST['last_name']);
$email = me_mysql_prep($_POST['email']);
$position = me_mysql_prep($_POST['Position']);
$password = me_mysql_prep($_POST['password']);
$hashed_password = sha1($password);



$required_fields = array($username,$first_name,$last_name, $email, $position, $password);



foreach($required as $key => $value)
{
if($value == "")
{
echo $key . " Cannot be empty<br>";
}

}


?>

So the result would be like this...

IF username, first name and last name are EMPTY it will echo:

Quote

username cannot be empty
first name cannot be empty
last name cannot be empty



Anyone?

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.

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?

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 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 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.

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?

I am having trouble searching for an item in a multi-dimensional array.

Is there a way to search only one column in a multi-dimensional array?

i.e:

MULTI-DIMENSIONAL ARRAY

ID  Name  DataTable
0   John  Employee
1   Dan   Employee
2   Matt  Boss
3   Becky Supervisor


Is there a way to only search the column "Name"(Column 2) using array_search() or similar? (i.e array_search("John",$ARRAY[Column2])

The help would be very much appreciated!

Cheers, Dan 

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
                )

        )
)

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.

<?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" } } }