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<?php $session_handler = 'foo'; session_set_save_handler( array($session_handler, 'open'), array($session_handler, 'close'), array($session_handler, 'read'), array($session_handler, 'write'), array($session_handler, 'destroy'), array($session_handler, 'gc'));
Output for 8.3.0 - 8.3.6
Fatal error: Uncaught TypeError: session_set_save_handler(): Argument #1 ($open) must be a valid callback, class "foo" not found in /in/KuFdp:3 Stack trace: #0 /in/KuFdp(3): session_set_save_handler(Array, Array, Array, Array, Array, Array) #1 {main} thrown in /in/KuFdp on line 3
Process exited with code 255.
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18
Fatal error: Uncaught TypeError: session_set_save_handler(): Argument #1 ($open) must be a valid callback, function "foo::open" not found or invalid function name in /in/KuFdp:3 Stack trace: #0 /in/KuFdp(3): session_set_save_handler(Array, Array, Array, Array, Array, Array) #1 {main} thrown in /in/KuFdp on line 3
Process exited with code 255.
Output for 4.3.11, 4.4.0 - 4.4.9, 5.0.4 - 5.0.5, 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, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: session_set_save_handler(): Argument 1 is not a valid callback in /in/KuFdp on line 3
Output for 5.0.0 - 5.0.3
Fatal error: Class 'foo' not found in Unknown on line 0
Process exited with code 255.
Output for 4.3.0 - 4.3.10

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