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run code in 150+ php & hhvm versions
Bugs & Features
<?php class foo { private $private = 'private'; protected $protected = 'protected'; public $public = 'public'; } class bar extends foo { public function __sleep() { return array("\0foo\0private", 'protected', 'public'); } } var_dump(str_replace("\0", '\0', serialize(new bar())));
Output for 5.0.2 - 5.0.4, 5.1.0 - 7.1.0
string(114) "O:3:"bar":3:{s:12:"\0foo\0private";s:7:"private";s:12:"\0*\0protected";s:9:"protected";s:6:"public";s:6:"public";}"
Output for 5.0.5

Process exited with code 139.
Output for 5.0.0 - 5.0.1
string(94) "O:3:"bar":3:{s:12:"\0foo\0private";s:7:"private";s:9:"protected";N;s:6:"public";s:6:"public";}"
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/jKQB0 on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/jKQB0 on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/jKQB0 on line 5
Process exited with code 255.