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<?php $foo = new stdClass; $storage = new SplObjectStorage; $storage[$foo] = $foo; var_dump(isset($storage[$foo])); var_dump($storage[$foo]); unset($storage[$foo]); var_dump(isset($storage[$foo]));
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 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
bool(true) object(stdClass)#1 (0) { } bool(false)
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Fatal error: Cannot use object of type SplObjectStorage as array in /in/fSELh on line 7
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Fatal error: Class 'SplObjectStorage' not found in /in/fSELh on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9
Fatal error: Cannot instantiate non-existent class: splobjectstorage in /in/fSELh on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Cannot instantiate non-existent class: splobjectstorage in /in/fSELh on line 5

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