Iterating object problem

computerzworld

Hello,
I am having a PHP object and I am trying to print its value.

Here is the object.

stdClass Object
(
    [0] => my value
)

So, I have tried to echo its value using $obj->0 . But it doesn't echo the object's value. I even tried to echo this value using $obj[0]. That also doesn't work. So, how can I access its value? Please help me. Thanks in advance.

NogDog

I'm guessing you cast an enumerated array into an object for some reason? If so, you've run into a Catch 22 due to the fact that in PHP, "Variable names follow the same rules as other labels in PHP. A valid variable name starts with a letter or underscore, followed by any number of letters, numbers, or underscores" [from http://www.php.net/manual/en/language.variables.basics.php].

If you need to directly access an element, you could cast it back to an array:

$arr = (array) $obj;
echo $arr[0];

Better yet, though, would be figuring out why you got into this situation in the first place and see if some re-factoring is called for in order to make it a non-issue.

computerzworld

i have tried this case by typecasting the object into array but it doesn't works for me. It is generating the array with the value located at 0th position and but I can not even access that array like this myArr[0] even if there is value located at that position. I am able to print_r the array but not able to access its value.

NogDog

Outside of the old joke...

Patient: Doctor, it hurts when I do this.
Doctor: Don't do that.

...All I can suggest outside of re-factoring the script so that this is not an issue, is that you might be able to iterate through it with a foreach():

function getValueByKey($obj, $key)
{
   $return = null;
   foreach($obj as $ix=> $val)
   {
      if($key == $ix)
      {
         $return = $val;
         break;
      }
   }
   return $return; // returns null if not found
}