'Hello to me'); //print $ha['key1']; # correct (usual way) //print $ha[key1]; # Warning, works (use of undefined constant) //print "He said {$ha['key1']}"; # correct (usual way) //print "He said {$ha[key1]}"; # Warning, works (use of undefined constant) //print "He said $ha['key1']"; # Error, unexpected T_ENCAPSED_AND_WHITESPACE //print "He said $ha[ key1 ]"; # Error, unexpected T_ENCAPSED_AND_WHITESPACE //print "He said $ha[key1]"; # !! correct (How Comes?) ?>