1--TEST-- 2Bug #52738 (Can't use new properties in class extended from DateInterval) 3--FILE-- 4<?php 5class di extends DateInterval { 6 public $unit = 1; 7} 8 9$I = new di('P10D'); 10echo $I->unit."\n"; 11$I->unit++; 12echo $I->unit."\n"; 13$I->unit = 42; 14echo $I->unit."\n"; 15$I->d++; 16print_r($I); 17--EXPECT-- 181 192 2042 21di Object 22( 23 [unit] => 42 24 [y] => 0 25 [m] => 0 26 [d] => 11 27 [h] => 0 28 [i] => 0 29 [s] => 0 30 [f] => 0 31 [weekday] => 0 32 [weekday_behavior] => 0 33 [first_last_day_of] => 0 34 [invert] => 0 35 [days] => 36 [special_type] => 0 37 [special_amount] => 0 38 [have_weekday_relative] => 0 39 [have_special_relative] => 0 40) 41