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run code in 150+ php & hhvm versions
Bugs & Features
<?php $classNames = array( "Foo", // userland class "StdClass", // class defined by php-src, but still not considered as internal "ReflectionClass", // internal class "ArrayObject", // internal class implementing Serializable ); foreach($classNames as $className) { print_r("-----------$className-----------"); var_dump(instanitateWithoutConstructorThroughUnserialize($className)); if (version_compare(PHP_VERSION, '5.4.0') >= 0) { var_dump(instanitateWithoutConstructorThroughReflection($className)); } print_r("----------------------"); } function instanitateWithoutConstructorThroughUnserialize($className) { return unserialize(sprintf('O:%d:"%s":0:{}', strlen($className), $className)); } function instanitateWithoutConstructorThroughReflection($className) { try { $ref = new ReflectionClass($className); return $ref->newInstanceWithoutConstructor(); } catch (ReflectionException $e) { return $e; } } class Foo {}
Output for 5.6.8 - 5.6.28, 7.0.0 - 7.1.0
-----------Foo-----------object(Foo)#1 (0) { } object(Foo)#2 (0) { } ---------------------------------StdClass-----------object(stdClass)#2 (0) { } object(stdClass)#1 (0) { } ---------------------------------ReflectionClass-----------object(ReflectionClass)#1 (1) { ["name"]=> string(0) "" } object(ReflectionClass)#2 (1) { ["name"]=> string(0) "" } ---------------------------------ArrayObject----------- Warning: Erroneous data format for unserializing 'ArrayObject' in /in/4ZKKW on line 20 Notice: unserialize(): Error at offset 22 of 23 bytes in /in/4ZKKW on line 20 bool(false) object(ArrayObject)#1 (1) { ["storage":"ArrayObject":private]=> array(0) { } } ----------------------
Output for hhvm-3.10.0 - 3.12.0
-----------Foo-----------object(Foo)#1 (0) { } object(Foo)#2 (0) { } ---------------------------------StdClass-----------object(stdClass)#2 (0) { } object(stdClass)#3 (0) { } ---------------------------------ReflectionClass-----------object(ReflectionClass)#3 (2) { ["name"]=> NULL ["obj":"ReflectionClass":private]=> NULL } object(ReflectionClass)#4 (2) { ["name"]=> NULL ["obj":"ReflectionClass":private]=> NULL } ---------------------------------ArrayObject-----------object(ArrayObject)#4 (1) { ["storage":"ArrayObject":private]=> array(0) { } } object(ArrayObject)#5 (1) { ["storage":"ArrayObject":private]=> array(0) { } } ----------------------
Output for 5.4.0 - 5.4.28, 5.4.30 - 5.5.35
-----------Foo-----------object(Foo)#1 (0) { } object(Foo)#2 (0) { } ---------------------------------StdClass-----------object(stdClass)#2 (0) { } object(stdClass)#1 (0) { } ---------------------------------ReflectionClass-----------object(ReflectionClass)#1 (1) { ["name"]=> string(0) "" } object(ReflectionException)#2 (7) { ["message":protected]=> string(103) "Class ReflectionClass is an internal class that cannot be instantiated without invoking its constructor" ["string":"Exception":private]=> string(0) "" ["code":protected]=> int(0) ["file":protected]=> string(9) "/in/4ZKKW" ["line":protected]=> int(26) ["trace":"Exception":private]=> array(2) { [0]=> array(6) { ["file"]=> string(9) "/in/4ZKKW" ["line"]=> int(26) ["function"]=> string(29) "newInstanceWithoutConstructor" ["class"]=> string(15) "ReflectionClass" ["type"]=> string(2) "->" ["args"]=> array(0) { } } [1]=> array(4) { ["file"]=> string(9) "/in/4ZKKW" ["line"]=> int(14) ["function"]=> string(46) "instanitateWithoutConstructorThroughReflection" ["args"]=> array(1) { [0]=> string(15) "ReflectionClass" } } } ["previous":"Exception":private]=> NULL } ---------------------------------ArrayObject-----------object(ArrayObject)#2 (1) { ["storage":"ArrayObject":private]=> array(0) { } } object(ReflectionException)#1 (7) { ["message":protected]=> string(99) "Class ArrayObject is an internal class that cannot be instantiated without invoking its constructor" ["string":"Exception":private]=> string(0) "" ["code":protected]=> int(0) ["file":protected]=> string(9) "/in/4ZKKW" ["line":protected]=> int(26) ["trace":"Exception":private]=> array(2) { [0]=> array(6) { ["file"]=> string(9) "/in/4ZKKW" ["line"]=> int(26) ["function"]=> string(29) "newInstanceWithoutConstructor" ["class"]=> string(15) "ReflectionClass" ["type"]=> string(2) "->" ["args"]=> array(0) { } } [1]=> array(4) { ["file"]=> string(9) "/in/4ZKKW" ["line"]=> int(14) ["function"]=> string(46) "instanitateWithoutConstructorThroughReflection" ["args"]=> array(1) { [0]=> string(11) "ArrayObject" } } } ["previous":"Exception":private]=> NULL } ----------------------
Output for 5.4.29
-----------Foo-----------object(Foo)#1 (0) { } object(Foo)#2 (0) { } ---------------------------------StdClass-----------object(stdClass)#2 (0) { } object(stdClass)#1 (0) { } ---------------------------------ReflectionClass-----------object(ReflectionClass)#1 (1) { ["name"]=> string(0) "" } object(ReflectionException)#2 (7) { ["message":protected]=> string(103) "Class ReflectionClass is an internal class that cannot be instantiated without invoking its constructor" ["string":"Exception":private]=> string(0) "" ["code":protected]=> int(0) ["file":protected]=> string(9) "/in/4ZKKW" ["line":protected]=> int(26) ["trace":"Exception":private]=> array(2) { [0]=> array(6) { ["file"]=> string(9) "/in/4ZKKW" ["line"]=> int(26) ["function"]=> string(29) "newInstanceWithoutConstructor" ["class"]=> string(15) "ReflectionClass" ["type"]=> string(2) "->" ["args"]=> array(0) { } } [1]=> array(4) { ["file"]=> string(9) "/in/4ZKKW" ["line"]=> int(14) ["function"]=> string(46) "instanitateWithoutConstructorThroughReflection" ["args"]=> array(1) { [0]=> string(15) "ReflectionClass" } } } ["previous":"Exception":private]=> NULL } ---------------------------------ArrayObject----------- Warning: Erroneous data format for unserializing 'ArrayObject' in /in/4ZKKW on line 20 Notice: unserialize(): Error at offset 22 of 23 bytes in /in/4ZKKW on line 20 bool(false) object(ReflectionException)#1 (7) { ["message":protected]=> string(99) "Class ArrayObject is an internal class that cannot be instantiated without invoking its constructor" ["string":"Exception":private]=> string(0) "" ["code":protected]=> int(0) ["file":protected]=> string(9) "/in/4ZKKW" ["line":protected]=> int(26) ["trace":"Exception":private]=> array(2) { [0]=> array(6) { ["file"]=> string(9) "/in/4ZKKW" ["line"]=> int(26) ["function"]=> string(29) "newInstanceWithoutConstructor" ["class"]=> string(15) "ReflectionClass" ["type"]=> string(2) "->" ["args"]=> array(0) { } } [1]=> array(4) { ["file"]=> string(9) "/in/4ZKKW" ["line"]=> int(14) ["function"]=> string(46) "instanitateWithoutConstructorThroughReflection" ["args"]=> array(1) { [0]=> string(11) "ArrayObject" } } } ["previous":"Exception":private]=> NULL } ----------------------
Output for 5.3.0 - 5.3.29
-----------Foo-----------object(Foo)#1 (0) { } ---------------------------------StdClass-----------object(stdClass)#1 (0) { } ---------------------------------ReflectionClass-----------object(ReflectionClass)#1 (1) { ["name"]=> string(0) "" } ---------------------------------ArrayObject-----------object(ArrayObject)#1 (1) { ["storage":"ArrayObject":private]=> array(0) { } } ----------------------
Output for 5.0.3 - 5.2.17
-----------Foo-----------object(Foo)#1 (0) { } ---------------------------------StdClass-----------object(stdClass)#1 (0) { } ---------------------------------ReflectionClass-----------object(ReflectionClass)#1 (1) { ["name"]=> string(0) "" } ---------------------------------ArrayObject-----------object(ArrayObject)#1 (0) { } ----------------------
Output for 5.0.0 - 5.0.2
-----------Foo-----------object(Foo)#1 (0) { } ---------------------------------StdClass-----------object(stdClass)#1 (0) { } ---------------------------------ReflectionClass-----------object(ReflectionClass)#1 (0) { } ---------------------------------ArrayObject-----------object(ArrayObject)#1 (0) { } ----------------------
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected '{' in /in/4ZKKW on line 24
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected '{' in /in/4ZKKW on line 24
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/4ZKKW on line 24
Process exited with code 255.