Can PHP detect include?

[paket]

Is a PHP script able to detect if it's being included in another one or being called directly? Python has a neat little trick:

if __name__ == "__main__":

that allows it to tell if the module is being run directly or if it's being imported. I want to write a bit of PHP that assigned it's output to a variable if it's being included in another, but echos the output if it's being called directly.

thanks

[NogDog]

if(realpath(__FILE__) == realpath($_SERVER['SCRIPT_FILENAME']))
{
   echo "This was not included.";
}
else
{
   echo "This was included.";
}

[nincha]

just use include_once or require_once