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<?php class Test implements Serializable { private $foo = "Test"; public function __serialize(): array { return [ 'foo' => $this->foo ]; } public function __unserialize( array $data ): void { $this->foo = $data['foo']; } public function serialize() { return serialize( $this->__serialize() ); } public function unserialize( $serialized ): void { $this->__unserialize( unserialize( $serialized ) ); } } echo serialize(new Test()) . "\n"; // PHP 7.00 - 7.3.33 echo get_class(unserialize('C:4:"Test":27:{a:1:{s:3:"foo";s:4:"Test";}}')) . "\n"; // PHP 7.4.0 - 8.1.9 echo get_class(unserialize('O:4:"Test":1:{s:3:"foo";s:4:"Test";}')) . "\n";
Output for 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
O:4:"Test":1:{s:3:"foo";s:4:"Test";} Test Test
Output for 7.3.0 - 7.3.33
C:4:"Test":27:{a:1:{s:3:"foo";s:4:"Test";}} Test Warning: Erroneous data format for unserializing 'Test' in /in/GmmmL on line 32 Notice: unserialize(): Error at offset 14 of 36 bytes in /in/GmmmL on line 32 Warning: get_class() expects parameter 1 to be object, bool given in /in/GmmmL on line 32
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.34
C:4:"Test":27:{a:1:{s:3:"foo";s:4:"Test";}} Test Warning: Erroneous data format for unserializing 'Test' in /in/GmmmL on line 32 Notice: unserialize(): Error at offset 14 of 36 bytes in /in/GmmmL on line 32 Warning: get_class() expects parameter 1 to be object, boolean given in /in/GmmmL on line 32
Output for 7.0.0 - 7.0.33
C:4:"Test":27:{a:1:{s:3:"foo";s:4:"Test";}} Fatal error: Uncaught TypeError: Return value of Test::__unserialize() must be an instance of void, none returned in /in/GmmmL:14 Stack trace: #0 /in/GmmmL(21): Test->__unserialize(Array) #1 [internal function]: Test->unserialize('a:1:{s:3:"foo";...') #2 /in/GmmmL(29): unserialize('C:4:"Test":27:{...') #3 {main} thrown in /in/GmmmL on line 14
Process exited with code 255.
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Parse error: syntax error, unexpected ':', expecting ';' or '{' in /in/GmmmL on line 6
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected ':', expecting '{' or ';' in /in/GmmmL on line 6
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting '{' in /in/GmmmL on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting '{' in /in/GmmmL on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `'{'' in /in/GmmmL on line 3
Process exited with code 255.

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