[php] better Sys.println()

std/php/_std/Std.hx

@@ -26,7 +26,6 @@ import php.Global;
 import php.Const;
 import php.Syntax;
 
-@:keep
 @:coreApi class Std {
 
 	public static inline function is( v : Dynamic, t : Dynamic ) : Bool {

std/php/_std/Sys.hx

@@ -32,9 +32,8 @@ import sys.io.FileInput;
 		Global.echo(Std.string(v));
 	}
 
-	public static function println( v : Dynamic ) : Void {
-		print(v);
-		print("\n");
+	public static inline function println( v : Dynamic ) : Void {
+		Global.echo(Std.string(v) + "\n");
 	}
 
 	public static function args() : Array<String> {