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<?php function foo() { foreach ([] as $foo) { } } $iterator = new AppendIterator(); $iterator->append(foo()); var_dump(iterator_to_array($iterator));
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
Fatal error: Uncaught TypeError: AppendIterator::append(): Argument #1 ($iterator) must be of type Iterator, null given in /in/V0F0K:8 Stack trace: #0 /in/V0F0K(8): AppendIterator->append(NULL) #1 {main} thrown in /in/V0F0K on line 8
Process exited with code 255.
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Fatal error: Uncaught TypeError: AppendIterator::append(): Argument #1 ($iterator) must be of type Iterator, null given in /in/V0F0K:8 Stack trace: #0 /in/V0F0K(8): AppendIterator->append(NULL) #1 {main} thrown in /in/V0F0K on line 8
Process exited with code 255.
Output for 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
Fatal error: Uncaught TypeError: Argument 1 passed to AppendIterator::append() must implement interface Iterator, null given in /in/V0F0K:8 Stack trace: #0 /in/V0F0K(8): AppendIterator->append(NULL) #1 {main} thrown in /in/V0F0K on line 8
Process exited with code 255.
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Catchable fatal error: Argument 1 passed to AppendIterator::append() must implement interface Iterator, null given in /in/V0F0K on line 8
Process exited with code 255.

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