1--TEST-- 2http_build_query() function with recursif object 3--FILE-- 4<?php 5class KeyVal { 6 public $public = "input"; 7 protected $protected = "hello"; 8 private $private = "world"; 9} 10 11$o = new KeyVal(); 12$o->public = $o; 13 14var_dump(http_build_query($o)); 15?> 16--EXPECT-- 17string(0) "" 18