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<?php class ToS { function __toString(){echo('hi');} } $x=unserialize('O:12:"DateInterval":1:{s:4:"days";O:3:"ToS":0:{}}'); var_dump($x);
based on XIUYk
Output for 7.1.0 - 7.2.0
object(DateInterval)#1 (16) { ["days"]=> int(-1) ["y"]=> int(-1) ["m"]=> int(-1) ["d"]=> int(-1) ["h"]=> int(-1) ["i"]=> int(-1) ["s"]=> int(-1) ["f"]=> float(-1) ["weekday"]=> int(-1) ["weekday_behavior"]=> int(-1) ["first_last_day_of"]=> int(-1) ["invert"]=> int(0) ["special_type"]=> int(0) ["special_amount"]=> int(-1) ["have_weekday_relative"]=> int(0) ["have_special_relative"]=> int(0) }
Output for 5.4.44 - 5.4.45, 5.5.28 - 5.5.35, 5.6.12 - 5.6.28, 7.0.20
object(DateInterval)#1 (15) { ["days"]=> int(-1) ["y"]=> int(-1) ["m"]=> int(-1) ["d"]=> int(-1) ["h"]=> int(-1) ["i"]=> int(-1) ["s"]=> int(-1) ["weekday"]=> int(-1) ["weekday_behavior"]=> int(-1) ["first_last_day_of"]=> int(-1) ["invert"]=> int(0) ["special_type"]=> int(0) ["special_amount"]=> int(-1) ["have_weekday_relative"]=> int(0) ["have_special_relative"]=> int(0) }
Output for 5.3.27 - 5.3.29, 5.4.17 - 5.4.43, 5.5.24 - 5.5.27, 5.6.7 - 5.6.11, 7.0.0 - 7.0.6
hi Catchable fatal error: Method ToS::__toString() must return a string value in /in/gsr8M on line 6
Process exited with code 255.
Output for 5.3.18 - 5.3.26, 5.4.2 - 5.4.16
Notice: Object of class ToS could not be converted to int in /in/gsr8M on line 6 object(DateInterval)#1 (8) { ["days"]=> int(1) ["y"]=> int(-1) ["m"]=> int(-1) ["d"]=> int(-1) ["h"]=> int(-1) ["i"]=> int(-1) ["s"]=> int(-1) ["invert"]=> int(-1) }