CODEWITHSUNDEEP
phparraysloopsmultidimensional-array
Dan
Dan

Reputation: 1244

Another php array looping question

Been battling with this one for what seems, like forever.

I have an array:

$url_array

It contains this info:

Array ( 
   [ppp] => Array ( 
      [0] => stdClass Object ( 
         [id] => 46660 
         [entity_id] => 0 
         [redirect_url] => http://www.google.com 
         [type] => Image 
      ) 
      [1] => stdClass Object ( 
         [id] => 52662 
         [entity_id] => 0 
         [pixel_redirect_url] => http://www.yahoo.com 
         [type] => Image 
      ) 
      [2] => stdClass Object ( 
         [id] => 53877 
         [entity_id] => 0 
         [redirect_url] => http://www.msn.com 
         [pixel_type] => Image 
      ) 
   ) 
   [total_count] => 3 
)

I need to loop through it, and do things to each variable. I can get this to work:

foreach ($piggies_array as $key => $value) {
$id = $value[0]->id;
$redirect_url = $value[0]->redirect_url; }

Not unsurprisingly, it's only echoing the first value of those variables, but no matter what I try I cannot get it to loop through:

$value->redirect_url;
$value=>redirect_url;

I would appreciate any help.

Upvotes: 3

Views: 194

Answers (6)

Mihai Toader
Mihai Toader

Reputation: 12243

loop like this (assuming that $piggies_array is the same as $url_array you dumped):

foreach ($piggies_array['ppp'] as $key => $value) {
   $id = $value->id;
   $redirect_url = $value->redirect_url; 
}

and watch out because some of the items in 'ppp' array will not have a property redirect_url (hte second one has a pixel_redirect_url property instead.

Upvotes: 0

Gonzalo Larralde
Gonzalo Larralde

Reputation: 3541

You're iterating over the first dimension of the array, which only haves the "ppp" element. Check your code, and you'll see that you're actually asking for the first element of the array, when you have 3 elements.

What you have to do is, iterate into the array of objects ($url_array["ppp"]).

When you're in doubt about what you're actually iterating, a good way to start debuggin it, is printing every iteration step. If you do this with the example that you've posted, you'll see this:

Array( [0] => stdClass [...], [1] => stdClass [...] ... )

doing this:

foreach ($piggies_array as $key => $value) {
    var_dump($value);
}

Looking at this, you'll automatically find out what your problem is. So, changing it to:

foreach ($piggies_array['ppp'] as $key => $value) {
    var_dump($value);
}

You'll have the result you want:

Object ( id: ... )
Object ( id: ... )
Object ( id: ... )

Good luck!

Upvotes: 0

Scoobler
Scoobler

Reputation: 9719

Your array contains another array by calling $value[0] you are only asking for the first item in the second array. You will need two loops, not forgetting the value may not be an array: 

    foreach ($piggies as $var)
    {
        if (is_array($var))
        {
            foreach ($var as $obj)
            {
                echo $obj->redirect_url;
            }
        }
        else 
        {
            echo $var;
        }
    }

The above (not tested) will output each URL and will also output the total count item of the first array.

Upvotes: 0

bharath
bharath

Reputation: 1233

your doing $id = $value[0]->id which will only do the statments for the 0 element

you need a for loo

for($i = 0; $i < count($piggies_array['ppp']); $i++)
{
    $id = $value[$i]->id;
    $redirect_url = $value[$i]->redirect_url;
}

Upvotes: 0

cocacola09
cocacola09

Reputation: 648

You need to loop through the array twice.

foreach($piggies as $piggy) {

foreach($piggy as $key=>$value) {

$id = $value->id;
$redirect_url = $value->redirect_url; 

}

}

Upvotes: 1

netcoder
netcoder

Reputation: 67735

This should do the trick:

foreach ($url_array['ppp'] as $key => $object) {
    echo $object->redirect_url;
}

Upvotes: 8

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