I think I am getting the same problem within your previous thread from andy and ratheesh. I have looked into it a little bit and I get the same problem as ratheesh:
Wrong parameter count for strstr()
On line 32 you have included three parameters for the strstr function. However this is only supported in PHP version 5.3.0 so I think in both mine and ratheesh's case our respective servers cannot process this. However I am also relatively new to PHP and I am not sure why you used the strstr function here.
If I remove the parameter true from the strstr function I get a lot of links (presumably from google) so this function is definately needed.
Is there any more help you can provide for this class?