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run code in 200+ php & hhvm versions
Bugs & Features
<?php $inner = 's:1:"1";a:1:{i:0;O:12:"DateInterval":1:{s:1:"y";R:3;}}'; var_dump(unserialize('a:2:{i:0;i:1;i:1;C:3:"GMP":'.strlen($inner).':{'.$inner.'}}'));
based on EfCZ5
Output for 7.1.0 - 7.2.0
array(2) { [0]=> int(1) [1]=> &object(GMP)#1 (2) { [0]=> object(DateInterval)#2 (16) { ["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) ["days"]=> int(-1) ["special_type"]=> int(0) ["special_amount"]=> int(-1) ["have_weekday_relative"]=> int(0) ["have_special_relative"]=> int(0) } ["num"]=> string(1) "1" } }
Output for 5.6.12 - 5.6.20, 5.6.28, 7.0.20
array(2) { [0]=> int(1) [1]=> &object(GMP)#1 (2) { [0]=> object(DateInterval)#2 (15) { ["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) ["days"]=> int(-1) ["special_type"]=> int(0) ["special_amount"]=> int(-1) ["have_weekday_relative"]=> int(0) ["have_special_relative"]=> int(0) } ["num"]=> string(1) "1" } }
Output for 5.3.18 - 5.5.35, 5.6.21, 7.0.6
Warning: Class __PHP_Incomplete_Class has no unserializer in /in/N7p8b on line 4 array(2) { [0]=> int(1) [1]=> object(__PHP_Incomplete_Class)#1 (1) { ["__PHP_Incomplete_Class_Name"]=> string(3) "GMP" } }
Output for 5.6.7 - 5.6.11, 7.0.0 - 7.0.5

Process exited with code 139.