help - pcntl fork and standart output

[ebl]

i run this code on lighttp server (on centos):
[php]
$pid = pcntl_fork();
if ($pid == -1) {
die(‘could not fork’);
} else if ($pid) {
pcntl_wait($status,WNOHANG);
$fp = fopen(“tmp”,“a”);
fwrite($fp,“parent”);
fclose($fp);
echo " back to parent ";
} else {

      $fp = fopen("tmp","a"); 
     fwrite($fp,"sun"); 
     fclose($fp); 
    echo " sun "; 
     
}  

[/php]

the output on the browser is “sun”
and the file content is “sun parent”

My question is how can i get the output back to the parent process?

thanks