strstr function

[eluser]Dynamica Technology[/eluser]
Hi

I have this code

Code:

$needle = ',';
  $haystack=$fb_data['me']['location']['name'];
  $before_needle='TRUE';

  $db_data=array(
    'city'=>strstr($haystack, $needle, $before_needle)
   );

when run the app I have this error

Severity: Warning

Message: Wrong parameter count for strstr()

Filename: models/facebook_model.php

Line Number: 85

if not use the needle the function work.

Could you help me.
Thanks