PHP setting and looping associative array

Question

I populate the $_SESSION['products'] array from a file:

$myFile = '.\products.txt';
$handle = fopen($myFile, 'r');

while (!feof($handle))
{
    $prod = explode('|', fgets($handle));

    $_SESSION['products'] = array($prod[4] => array(
            'name' => $prod[0],
            'price' => $prod[1],
            'description' => $prod[2],
            'image' => $prod[3]));
}

Then I want to loop through it, printing all the names and prices:

foreach ($_SESSION['products'] as $prodID=>$value) {
  echo $_SESSION['products'][$value]['name'];
  echo $_SESSION['products'][$value]['price'];
}

But it doesn't seem to work!

Array ( [ylbulb] => Array ( [name] => 60W Yellow Bulb [price] => 7.95 [description] => Yellow Bulb description... [image] => ylbulb.png ) ) So all items are not being loaded into the array! — AntikM
– AntikM, Commented Oct 10, 2012 at 7:54

Newbo.O · Accepted Answer · 2012-10-10 07:49:58Z

4

You need to check again how the foreach works. In your case, you can simply do the following:

foreach($_SESSION['products'] as $value) {
    echo $value['name'];
    echo $value['price'];
}

answered Oct 10, 2012 at 7:49

Newbo.O

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2 Comments

AntikM Over a year ago

Thanks. But it is only printing the last item. For some reason, all items in the text file is not being loaded into the $_SESSION['products'] array!

Newbo.O Over a year ago

See MrCode's answer for that.

MrCode · Accepted Answer · 2012-10-10 08:24:26Z

3

Your problem is, here you are overwriting the products array with every product, which means there will only ever be the last product present:

    $_SESSION['products'] = array($prod[4] => array(

Try appending to the array like:

$_SESSION['products'][$prod[4]] = array(
//                    ^^^^^^^^ set the key as the product ID here
        'name' => $prod[0],
        'price' => $prod[1],
        'description' => $prod[2],
        'image' => $prod[3]);

Also your foreach is wrong, try

foreach ($_SESSION['products'] as $prodID=>$value) {
  echo $value['name'];
  echo $value['price'];
}

edited Oct 10, 2012 at 8:24

answered Oct 10, 2012 at 7:56

MrCode

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7 Comments

AntikM Over a year ago

Thanks but this isn't working. It giving an undefined index error and seems to multiplying the index with every page refresh.

MrCode Over a year ago

Of course it will duplicate the array with a page refresh if you are calling this code again and again. $_SESSION data persists across pages, you should only populate the array from the file once.

AntikM Over a year ago

ok thanks! i figured that out... however i still cant get to print anything due to the undefined index error

AntikM Over a year ago

the two echos between the foreach loop

MrCode Over a year ago

If the foreach is on a different page, be sure to call session_start(); before trying to use any session data. If you don't call that before setting or getting session data, it will not be persisted.

|

joe_young · Accepted Answer · 2015-12-14 22:15:12Z

0

foreach ($_SESSION['products'] as $prodID=>$value) {
    echo $_SESSION['products'][$prodID]['name'];
    echo $_SESSION['products'][$prodID]['price'];
}

edited Dec 14, 2015 at 22:15

joe_young

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answered Oct 10, 2012 at 7:48

Varun Bansal

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