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<?php function feed() { return new ArrayIterator(['Apples', 'Bananas', 'Cherries']); } iterator_apply(feed(), function(Iterator $iterator) { echo strtoupper($iterator->current()) . "\n"; return TRUE; }, array($it));
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined variable $it in /in/IQXhu on line 11 Fatal error: Uncaught TypeError: {closure}(): Argument #1 ($iterator) must be of type Iterator, null given in /in/IQXhu:8 Stack trace: #0 [internal function]: {closure}(NULL) #1 /in/IQXhu(8): iterator_apply(Object(ArrayIterator), Object(Closure), Array) #2 {main} thrown in /in/IQXhu on line 8
Process exited with code 255.

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