PHP - Remove Session Array Works For 1 But Not 2 Items

hello all, I was hoping someone could help me figure out how to add sizes to my shopping cart.
Right now the items add just fine. The site sells shirts and I'm having trouble displaying the sizes once selected and added to the cart. It will post the size selected, but if the customer tries to add another shirt the size will overwrite the last.

Any help is appreciated.

Heres how I add items to the cart...
Code: [Select]
session_start();
// Process actions
$cart = $_SESSION['cart'];
$action = $_GET['action'];
switch ($action) {
case 'empty':
if($cart) {
unset($cart);
}
break;
case 'add':
if ($cart) {
$cart .= ','.$_GET['product_id'];
} else {
$cart = $_GET['product_id'];
}
break;
The form with the size selection and add to cart button..
Code: [Select]
  <form action="cart.php?action=add&amp;product_id=<?php echo $row_rs_products['product_id'] ?>" method="POST" name="addcart" id="addcart">
      <table width="300" border="0">
        <tr>
          <td><label for="sizes"></label>
            <select name="product_size" id="product_size" title="<?php echo $row_rs_products['product_size']; ?>">
              <?php
do {  
?>
              <?php
} while ($row_rs_sizes = mysql_fetch_assoc($rs_sizes));
  $rows = mysql_num_rows($rs_sizes);
  if($rows > 0) {
      mysql_data_seek($rs_sizes, 0);
  $row_rs_sizes = mysql_fetch_assoc($rs_sizes);
  }
?>
            </select></td>
          <td><input type="submit" name="submit" id="submit" value="add to cart">
function displaying the cart..
Code: [Select]
function showCart() {
global $db;
$cart = $_SESSION['cart'];
if ($cart) {
$items = explode(',',$cart);
$contents = array();
foreach ($items as $item) {
$contents[$item] = (isset($contents[$item])) ? $contents[$item] + 1 : 1;
}
$output[] = '<form action="cart.php?action=update" method="post" id="cart">';
$output[] = '<table>';
// start div
$output[] = '<div id="cart_table">';
//
$output[] = '<tr>';
$output[] = '<td><h4>Product</h4></td>';
$output[] = '<td><h4>Item No.</h4></td>';
$output[] = '<td><h4>Price</h4></td>';
$output[] = '<td><h4>Size</h4></td>';
$output[] = '<td><h4>Quantity</h4></td>';
$output[] = '<td><h4>Price Total</h4></td>';
$output[] = '<td><h4>&nbsp;</h4></td>';
$output[] = '</tr>';
//new row
foreach ($contents as $product_id=>$qty) {
$sql = 'SELECT * FROM products WHERE product_id = '.$product_id;
$result = $db->query($sql);
$row = $result->fetch();
extract($row);
//
$output[] = '<tr>';
$output[] = '<td><a href="product.php?product_id='.$product_id.'">'.$product_title.'</a></td>';
$output[] = '<td>'.$product_plu.'</td>';
$output[] = '<td>$'.$product_price.'</td>';
//
//$output[] = '<td>'.$product_size.'</td>';
$output[] = '<td>'.$_POST['product_size'].'</td>';
//
$output[] = '<td><input type="text" name="qty'.$product_id.'" value="'.$qty.'" size="3" maxlength="3" /></td>';
$output[] = '<td>X&nbsp;$'.($product_price * $qty).'</td>';
$total += $product_price * $qty;
$output[] = '<td><a href="cart.php?action=delete&product_id='.$product_id.'" class="r">Remove</a>&nbsp;</td>';
$output[] = '</tr>';
//end div
$output[] = '</div>';



}
$output[] = '</table>';
$output[] = '<p>Grand total: <strong>$'.$total.'</strong></p>';
$output[] = '<div class="float-right"><button type="submit">Update cart</button>';
$output[] = '</form>';

Hey All,

I have a sessions table that is used to see if a user is online.  It only gets deleted when they click the Logout button.  What I need to do is have it so it gets deleted even if they close the browser.

Should I add a column in the sessions table with a time stamp and check on each page for every user to make sure its great than 30 min?

Is there a better way to do this, without so many queries?

Thanks

Hello,

I am puzzled as to how to get this code actually working, I am using some example code, I want the code to remove the data of the logged in users, at the moment it will remove all users registered in the mysql db.

<?php
# Access session.
session_start() ;

if ( !isset( $_SESSION[ 'user_id' ] ) ) { require ( 'login_tools.php' ) ; load() ; }

# Connect to the database.
require ('connect_db.php');

// Attempt delete query execution
$sql = "DELETE FROM users WHERE user_id=user_id";
if(mysqli_query($dbc, $sql, $q)){
    echo "Records were deleted successfully.";
} else{
    echo "ERROR: Could not able to execute $sql. " . mysqli_error($dbc);
}
# Close database connection.
mysqli_close( $dbc ) ;
?>

$_session id knows that the user is logged into the control page, but for the code to remove the particular user logged in from the db, what exactly does this need?

Thank you.

Hi,

I'm hoping someone can help me with a simply array problem.

I have a table with two columns: "ID" and "Name" and 100 Names.

I also have an array called $myIDList containing 10 IDs. I want to display 10 Names from the table that correspond with the IDs from my array.

Originally, I tried to implode the array, adding commas and inserted into my MySQL query using:

$myQuery = "SELECT ID, Name FROM namesTable WHERE ID IN ($myImplodedIDList)";

The problem was that duplicated names (i.e. the same Name, but assiged to different IDs) would only be displayed once.

So now I'm trying to use the original array to loop through a second array and display Names where the ID matches an ID from my first array. I have succesffuly listed the table like this:

$myQuery = "SELECT ID, Name FROM myTable ORDER BY ID";

$myResult = mysql_query($myQuery) or die(mysql_error());

    while($row=mysql_fetch_array($myResult)) {
         echo $row['ID'];
         echo $row['Name'];
    }

But I want to do something like:

    while($row=mysql_fetch_array($myResult)) {
      while $row['ID'] = $myIDList {
      echo $row['Name']
      }
    }

Can someone shed some light onto this for me please?

Thank you!
Bryan

How can I check if an array contains two items that are the same?

For example ("apples", "bananas", "oranges") returns false
But ("apples", "bananas", "bananas") returns true

I have an array of products. The array has an ID and price. I'd like to know the most efficient way of adding up all the same ID fields in the array.

Code: [Select]
<?php
$items[] = array(
'id' => 1,
'price' => 5.99,
);
$items[] = array(
'id' => 2,
'price' => 1.99,
);
$items[] = array(
'id' => 3,
'price' => 2.40,
);
$items[] = array(
'id' => 2,
'price' => 6.99,
);
$items[] = array(
'id' => 4,
'price' => 8,
);
$items[] = array(
'id' => 2,
'price' => 3,
);
$items[] = array(
'id' => 3,
'price' => 1,
);

function add_like_items($items)
{
//manipulation

return $sums;
}

//$sums would be an array like 
//$sum[1] = 5.99
//$sum[2] = 11.98
//$sum[3] = 3.40
//$sum[4] = 8 

?>
Anybody have suggestions on the best way to go about doing this?

Hi,

Im wondering if there is an easy way to get items out of an array returned by a function inside a class.   A code example would be:

Code: [Select]
class modDB {

public function getPwdSalt() {
$arr = array("salt", "password");
return $arr;
}

}
?>
And what i would like to be able to do is something like:

Code: [Select]
$modDB = new modDB;

echo $modDB->getPwdSalt()->[1];
and just get returned 'password'.  Is something like that possible?

Many Thanks.

Hi all,

I have a table that shows data from an xml response that has been converted to an array.

I have successfully managed to get that to work but it's showing more items than I want.

I'm trying to isolate the items by state. There are 11 or so different states, of which I only want 7. 

I've tried the following with a while loop but I keep getting the message "undefined index: job_status"  

Here's my code (partial)

$projects = array();    
    
        $xml=simplexml_load_string($response) or die("Error: Cannot create object");
     
    foreach($xml->Jobs->Job as $item) {
     
    $projects[] = array(
                     'job_no'          => (string)$item->ID,
                     'job_name'        => (string)$item->Name,
                     'job_due'         => (string)$item->DueDate,
                     'job_status'      => (string)$item->State,
                     'job_staff'       => (string)$item->Assigned->Staff->Name,
                    );
     }
     
 usort($projects, function($a,$b) {return $a['job_due'] <=> $b['job_due']; } );

$projects = array_reverse($projects);
     
while ($projects['job_status'] == ('Feasibility') 
          && ('Measure Up') 
          && ('Model Drawing') 
          && ('Concept Design') 
          && ('Developed Design') 
          && ('Resource Consent') 
          && ('Construction Documentation')) {
    
foreach ($projects as $proj) {
$formatted = date('d/m/Y', strtotime($proj['job_due'])); 
    $job_no ="{$proj['job_no']}";
    $job_name ="{$proj['job_name']}";
    $job_due ="$formatted";
    $job_status ="{$proj['job_status']}";
    $job_staff ="{$proj['job_staff']}";

Any help would be much appreciated thanks. 

Running a simple query:

SELECT team, rank from table ORDER BY rank ASC

returns 8 records in order from 1 to 8

I then want to a assign a new variable to each that I can use for later queries ie:

team with rank 1 = $team1
team with rank 2 = $team2
team with rank 3 = $team3

etc....


Thanks in advance.

Hi guys,
I'm just working on a script to get menu items from a database, sorted by a sort column. Each item needs to be checked to see if it has a parent, then paired with the parent.

Would it be best to get all of the items at once and pair them with PHP, or get the children of each item when as a separate array?

id label link parent sort 1 Home index.php 0 10 2 About about.php 0 20 3 Contact Us contact.php 2 10

I have this array of items in my php file.

 

$items = array(
    array("id" => 100,"categorypath" => "level1/powders", "product" => "Mens powder"),
    array("id" => 200,"categorypath" => "level1/oils/sunflower", "product" => "XYZ oil"),
    array("id" => 300,"categorypath" => "level1/eatable/vegetables", "product" => "carrot"),
    array("id" => 400,"categorypath" => "level1/oils/sunflower", "product" => "ABC oil"),
    array("id" => 500,"categorypath" => "level1/eatable/fruits", "product" => "mango"),
    array("id" => 600,"categorypath" => "level1/eatable/vegetables", "product" => "spinach"),
    array("id" => 700,"categorypath" => "level2/baby items/toys", "product" => "puzzle block"),
    array("id" => 800,"categorypath" => "level2/baby items/toys", "product" => "trucks and cars"),
    array("id" => 900,"categorypath" => "level2/baby items/clothes", "product" => "shirts"),
    array("id" => 1000,"categorypath" => "level1/powders", "product" => "Womens powder"),
    array("id" => 1100,"categorypath" => "level1/oils/groundnut", "product" => "GN oil"), 
);

Using the above array I am trying to generate a JSON file that will have the following structu

 

{
  "category":[
    {
      "categoryName":"level1",
      "category":[
        {
          "categoryName":"powders",
          "products":[
            {
              "id":"100",
              "path":"level1/powders",
              "prodname":"Mens powder"
            },
            {
              "id":"1000",
              "path":"level1/powders",
              "prodname":"Womens powder"
            }
          ]
        },
        {
          "categoryName":"oils",
          "category":[
            {
              "categoryName":"sunflower",
              "products":[
                  {
                    "id":"200",
                    "path":"level1/oils/sunflower",
                    "prodname":"XYZ oil"
                  },
                  {
                    "id":"400",
                    "path":"level1/oils/sunflower",
                    "prodname":"ABC oil"
                  }

              ]
            },
            {
              "categoryName":"groundnut",
              "products":[
                  {
                    "id":"1100",
                    "path":"level1/oils/groundnut",
                    "prodname":"GN oil"
                  }
              ]
            }
          ]
        },
        {
          "categoryName":"eatable",
          "category":[
            {
              "categoryName":"vegetables",
              "products":[
                {
                  "id":"300",
                  "path":"level1/eatable/vegetables",
                  "prodname":"carrot"
                },
                {
                  "id":"600",
                  "path":"level1/eatable/vegetables",
                  "prodname":"spinach"
                }
              ]
           },
           {
              "categoryName":"fruits",
              "products":[
                {
                  "id":"500",
                  "path":"level1/eatable/fruits",
                  "prodname":"mango"
                }
                  
              ]
            }
            
          ]
        }
        
    },
    {
      "categoryName":"level2",
      "category":[
        {
          "categoryName":"baby items",
          "category":[
            {
              "categoryName":"toys",
              "products":[
                {
                  "id":"700",
                  "path":"level2/baby items/toys",
                  "prodname":"puzzle blocks"
                },
                {
                  "id":"800",
                  "path":"level2/baby items/toys",
                  "prodname":"trucks and cars"
                }
              ]
            },
            {
              "categoryName":"clothes",
              "products":[
                {
                  "id":"900",
                  "path":"level2/baby items/clothes",
                  "prodname":"shirts"
                }
              ]
            }
          ]
        }

      ]
    }

Not being an expert in php, I have somehow managed to reach thus far in my code, but can not quite arrive at the correct logic. Having trouble with handling associative arrays and objects in php. (Javascripting is much easier I feel) So far I have managed to fix all the errors/warning in my code.

Here is my full php code:

 

$items = array(
    array("id" => 100,"categorypath" => "level1/powders", "product" => "Mens powder"),
    array("id" => 200,"categorypath" => "level1/oils/sunflower", "product" => "XYZ oil"),
    array("id" => 300,"categorypath" => "level1/eatable/vegetables", "product" => "carrot"),
    array("id" => 400,"categorypath" => "level1/oils/sunflower", "product" => "ABC oil"),
    array("id" => 500,"categorypath" => "level1/eatable/fruits", "product" => "mango"),
    array("id" => 600,"categorypath" => "level1/eatable/vegetables", "product" => "spinach"),
    array("id" => 700,"categorypath" => "level2/baby items/toys", "product" => "puzzle block"),
    array("id" => 800,"categorypath" => "level2/baby items/toys", "product" => "trucks and cars"),
    array("id" => 900,"categorypath" => "level2/baby items/clothes", "product" => "shirts"),
    array("id" => 1000,"categorypath" => "level1/powders", "product" => "Womens powder"),
    array("id" => 1100,"categorypath" => "level1/oils/groundnut", "product" => "GN oil"), 
);

$jsonStruct = array();

function jsonCreateStruct(){
    GLOBAL $items;
    for($c=0; $c<count($items); $c++){
        $categ = $items[$c]["categorypath"];
        insertJson($categ, $items[$c]);
        
    }
}

function insertJson($catg, $itm){
    GLOBAL $jsonStruct;
    $exp = explode("/",$catg);
    print_r("\n\n\n $catg \n");
    if(count($exp) == 1){
        print_r("Level 1 \n");
        if(!isset($jsonStruct[0])){
            $jsonStruct[0]["categoryName"] = $exp[0];
            $jsonStruct[0]["products"] = array($itm);
            print_r("\nCreated:: $exp[0]");
        }else{
           $notFound = true;
           for($j=0; $j<count($jsonStruct); $j++){
                $catgName = $jsonStruct[$j]["categoryName"];
                print_r("\nFound: $catgName");
                if($catgName == $exp[0]){
                    $notFound = false;
                    if($jsonStruct[$j]["products"]){
                        array_push($jsonStruct[$j]["products"],array($itm));
                    }else{
                        $jsonStruct[$j]["products"] = array();
                        array_push($jsonStruct[$j]["products"],array($itm));
                    }
                }
            }
            if($notFound){
                print_r("\nNotFound\n");
                array_push($jsonStruct,array("categoryName"=> $exp[0], "products" => array($itm)));
            }
            
        }
        
    }
    if(count($exp) == 2){
        print_r("Level 2 \n");
        if(!isset($jsonStruct[0])){
            $jsonStruct[0]["categoryName"] = $exp[0];
            $jsonStruct[0]["categorypath"] = array("categoryName" => $exp[1], "products" => array($itm));
            print_r("\nCreated:: $exp[0] / $exp[1]");
        }else{
            $notFound1 = true;
            $notFound2 = true;
            $indexLevel = null;
           for($j=0; $j<count($jsonStruct); $j++){
               $catgName1 = $jsonStruct[$j]["categoryName"];
                print_r("\nFound: $catgName1");
                if($catgName1 == $exp[0]){
                   $notFound1 = false;
                   $indexLevel = $j;
                   if(isset($jsonStruct[$j]["categorypath"])){
                       $level1 = $jsonStruct[$j]["categorypath"];
                       for($m=0; $m<count($level1); $m++){
                           if(isset($level1[$m]["categoryName"])){
                              $catgName2 = $level1[$m]["categoryName"];
                               print_r("\nFound: $catgName2");
                               if($catgName2 == $exp[1]){
                                   $notFound2 = false;
                                   if($level1[$m]["products"]){
                                       array_push($jsonStruct[$j]["categorypath"][$m]["products"],array($itm));
                                   }else{
                                       $jsonStruct[$j]["categorypath"][$m]["products"] = array();
                                       array_push($jsonStruct[$j]["categorypath"][$m]["products"],array($itm));
                                   }
                                   
                               } 
                           }
                       }
                   } 
                }
           }
           if($notFound1){
               print_r("\nNotFound1\n");
               array_push($jsonStruct,array("categoryName"=> $exp[0], "categorypath" => array("categoryName" => $exp[1],"products" => array($itm))));
           }else if($notFound2){
               print_r("\nNotFound2\n");
              // $jsonStruct[$indexLevel]["categorypath"] = array("categoryName"=> $exp[1], "products" => array($itm));
               $jsonStruct[$indexLevel]["categorypath"] = array();
               array_push($jsonStruct[$indexLevel]["categorypath"], array("categoryName"=> $exp[1], "products" => array($itm)));
           }
        } 
    }
    if(count($exp) == 3){
        print_r("Level 3 \n");
        if(!isset($jsonStruct[0])){
            $jsonStruct[0]["categoryName"] = $exp[0];
            $jsonStruct[0]["categorypath"] = array("categoryName" => $exp[1], "categorypath" => array("categoryName" => $exp[2], "products" => array($itm)));
            print_r("\nCreated:: $exp[0] / $exp[1] / $exp[2]");
        }else{
            $notFound1 = true;
            $notFound2 = true;
            $notFound3 = true;
            $indexLevel1 = null;
            $indexLevel2 = null;
           for($j=0; $j<count($jsonStruct); $j++){
               $catgName1 = $jsonStruct[$j]["categoryName"];
                print_r("\nFound: $catgName1");
                if($catgName1 == $exp[0]){
                   $notFound1 = false;
                   $indexLevel1 = $j;
                   if(isset($jsonStruct[$j]["categorypath"])){
                       $level2 = $jsonStruct[$j]["categorypath"];
                       for($m=0; $m<count($level2); $m++){
                           if(isset($level2[$m]["categoryName"])){
                              $catgName2 = $level2[$m]["categoryName"];
                               print_r("\nFound: $catgName2");
                               if($catgName2 == $exp[1]){
                                   $notFound2 = false;
                                   $indexLevel2 = $m;
                                   if(isset($level2[$m]["categorypath"])){
                                      $level3 = $level2[$m]["categorypath"];
                                      for($n=0; $n<count($level3); $n++){
                                          //print_r($level3["categoryName"]);
                                          if(isset($level3["categoryName"])){
                                             $catgName3 = $level3["categoryName"];
                                             print_r("\ncatgName3: ". $catgName3);
                                              if($catgName3 == $exp[2]){
                                                  $notFound3 = false;
                                                  if($level3["products"]){
                                                      print_r("\npushing into array\n");
                                                      array_push($jsonStruct[$j]["categorypath"][$m]["categorypath"]["products"],array($itm));
                                                  }else{
                                                      print_r("\ncreate new and pushing into array\n");
                                                      $jsonStruct[$j]["categorypath"][$m]["categorypath"][$n]["products"] = array();
                                                      array_push($jsonStruct[$j]["categorypath"][$m]["categorypath"]["products"],array($itm));
                                                  }
                                                  
                                              } 
                                          }
                                          
                                      }
                                   }
                               } 
                           }
                           
                       }
                   } 
                }
           }
           if($notFound1){
               print_r("\nNotFound1\n");
               array_push($jsonStruct, array("categoryName"=> $exp[0], "categorypath" => array("categoryName" => $exp[1],"products" => array($itm))));
           }else if($notFound2){
               print_r("\nNotFound2\n");
               if(!$jsonStruct[$indexLevel1]["categorypath"]){
                   $jsonStruct[$indexLevel1]["categorypath"] = array();
               }
               array_push($jsonStruct[$indexLevel1]["categorypath"], array("categoryName"=> $exp[1], "categorypath" => array("categoryName" => $exp[2], "products" => array($itm))));
           }else if($notFound3){
               print_r("\nNotFound3\n");
               //$jsonStruct[$indexLevel1]["categorypath"][$indexLevel2]["categorypath"] = array("categoryName"=> $exp[2], "products" => array($itm));
              if(!$jsonStruct[$indexLevel1]["categorypath"][$indexLevel2]["categorypath"]){
                  $jsonStruct[$indexLevel1]["categorypath"][$indexLevel2]["categorypath"] = array();
              }
               array_push($jsonStruct[$indexLevel1]["categorypath"][$indexLevel2]["categorypath"], array("categoryName"=> $exp[2], "products" => array($itm)));
           }
        } 
    }
}


jsonCreateStruct();
print_r("----------------------------------------");
print_r($jsonStruct); 
// echo json_encode($jsonStruct);

 

I have now reached a point where I desperately need help from experts.

 

-First I want to say that I love this site and always check google before I submit questions but im lost.

I'm into security and trying to learn a little Apache, Mysql, and PHP to understand the development cycle better. As practice im creating a notecard test review site. Create notecard Decks, add/delete questions etc. shuffle, then test yourself.

I though I was doing good until I got to the page that shows the questions (test.php).


Right now I pass the "deck_id" field in a GET to a "test.php?id=" page that runs a script that pulls out all the questions for that deck from my "questions" table and loops to show each question for that "deck".

My loop  works, (gets array from database and  shows questions one by one), but it writes all the questions to the page at the same time. DUH. I want it to show one question with a "NEXT" button to show next question. This button clears the first question and writes the next one until they are all done. No grading or anything needed.


Is there a way to do this gracefully?

I dont know much javascript but looked up innerHTML and see i can update text that way but the PHP loop I have goes so fast it just end up showing the last question with no way to pause it between questions. Can anyone think of a way to do this? My problem is passing the data from page to page to page (I lose the array data)


If this is impossible my other thoughts a

1) store current list of Q/A's in cookie    (OR)
2) pass Q/A to another page with POSTS   (OR)
3)store Q/A's to temporary sql table and use GETS in loop to show each one by one. "testing.php?question=1"
4) can i set a global variable that can pass the data to separate pages?
5)user iFrame so it looks like one page (dont know how)


Im leaning to number 3 but want to hear your suggestions. (sorry very new)

I'm new at PHP and have a problem.
I have a MySql database with lists of students grouped into classrooms. A typical group is shown in the attached screenshot screenshot.docx. I want to be able to select one or more of the names by using the associated checkbox, and upgrade a student or students into a different group as defined in the radio button list also in the screenshot.
I have the rudiments of the file attached, but I have absolutely no idea how I can post the array so that the records are updated.
Each student has an individual record with a field name userGroup which holds a string nominated by their classroom teacher, such as "year7", "year 8" and so on while they are in one of the several classrooms, but when they leave school this is recorded in a field named noGroup with a value of 0 or 1.
I can post further details as required, but it would be great if someone could help me.

Quote from: Hollows on August 20, 2010, 11:29:25 AM

I have an array that is pulling 10 results from a db like this -


<?php
$result = mysql_query("SELECT * FROM inbox ORDER BY id DESC LIMIT 0,10");
while ($row = mysql_fetch_array($result)) {

<div class="<?php echo $row['class'];  ?>">
<?php
echo $row['name'];
echo $row['message'];
?>
</div>


basically 'class' is defined in an earlyier part of the script and is used to tell the css what class to display - as I'm sure you can see.

What I'd like todo then be able to update the class of a message once I have read it, so update the class table with something like 'read' so the css will then be based on .read not what ever was set by the form, either using a link or form button inside each of the 10 results from the array.

I've managed to update one by using -
Code: [Select]
mysql_query("UPDATE shoutbox SET class = 'read' WHERE id = ''XX"); // XX should be row id

But I had to set that myself and point the id to the row id I wanted to change - How can I have that already populated with the row for the id that triggered it?


To be clear so it looks like -

Name
Message
read button
_____________
Name
Message
read button
_____________
Name
Message
read button
_____________

and so on...


Would I be better going by check boxes and one submit button? If so how could I implement that?


I can provide the full code I've written if it helps

Thank you in advance

Sample array:

array('one','two','three','_zero');

How could I sort this array so that _zero moves to the front.. Any items that begin with an underscore should be moved to the front of the array to get something like so:

_zero, one, two, three

Thanks