POST data from Arduino to website
The ip that I have Arduino send data to is the router's and thus, I should have used the 192.168.0.100 ip which is the one of my computer.

I also needed to save the value to a database to notice the changes because echo $temp1; did not seem to work, probably I should have it included into HTML label tags. Anyway, I just loaded the value from the database into a PHP variable and I was able to accomplish the task.