I realize there are quite a few questions of this nature, but I have not been able to solve my issue using the other posts, so I was hoping someone here may be able to help me out.
I have an object I'm getting back from Yahoo local search API. I have passed the results into json_decode() and saved the results to $yahoo_json_decoded. I can get data from the results using a for loop and doing the following:
echo 'Name: ' . $yahoo_json_decoded->ResultSet->Result[$i]->Title . '<br />' ;
But I can't seem to be able to make the foreach work:
foreach($yahoo_json_decoded->ResultSet as $res=>$variable)
{
$listingID = $yahoo_json_decoded->ResultSet[$res]->id ;
echo $listingID;
}
I could just loop the data and move on, but I really want to understand why the foreach isn't working.
Thanks (show mercy)
Kirk
The literal difference between the two loops
The for loop in your snippet iterates over the array $yahoo_json_decoded->ResultSet->Result, while the foreach loop iterates over the object $yahoo_json_decoded->ResultSet.
In other words, in the for loop you're iterating over the array elements as you expect, whereas in the foreach loop you are in fact iterating over the object properties.
A demonstration of the difference
For example, given this object:
$json = json_encode(array('result'=>array('apple','orange','lemon')));
$obj = json_decode($json);
consider the difference between this loop:
for ($i=0; $i < count($obj->result); $i++) :
echo $i.' - '.$obj->result[$i].' ';
endfor;
and this loop:
foreach ($obj as $key=>$val) :
echo $key.' - ';
var_dump($val);
endforeach;
The output of the first loop will be:
0 - apple 1 - orange 2 - lemon
While the output of the second will be:
result - array(3) { [0]=> string(5) "apple" [1]=> string(6) "orange" [2]=> string(5) "lemon" }