1--TEST-- 2Refcount inference when adding array elements 3--FILE-- 4<?php 5 6function test($a) { 7 $ary = [$a]; 8 $ary2 = [0, $ary, $ary]; 9 return $ary2; 10} 11var_dump(test(1)); 12 13?> 14--EXPECT-- 15array(3) { 16 [0]=> 17 int(0) 18 [1]=> 19 array(1) { 20 [0]=> 21 int(1) 22 } 23 [2]=> 24 array(1) { 25 [0]=> 26 int(1) 27 } 28} 29