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<?php class Collection implements IteratorAggregate { public function __construct(array $data) { $this->data = $data; } public function getIterator() { krsort($this->data); return new RecursiveIteratorIterator(new RecursiveArrayIterator($this->data)); } } $c = new Collection([ 10 => ['a', 'b'], 20 => ['c'], ]); var_dump(iterator_to_array($c));
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Deprecated: Return type of Collection::getIterator() should either be compatible with IteratorAggregate::getIterator(): Traversable, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/4S7ts on line 7 Deprecated: Creation of dynamic property Collection::$data is deprecated in /in/4S7ts on line 5 array(2) { [0]=> string(1) "a" [1]=> string(1) "b" }
Output for 8.1.0 - 8.1.28
Deprecated: Return type of Collection::getIterator() should either be compatible with IteratorAggregate::getIterator(): Traversable, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/4S7ts on line 7 array(2) { [0]=> string(1) "a" [1]=> string(1) "b" }
Output for 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, 8.0.0 - 8.0.30
array(2) { [0]=> string(1) "a" [1]=> string(1) "b" }
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[', expecting ')' in /in/4S7ts on line 13
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_ARRAY, expecting '&' or T_VARIABLE in /in/4S7ts on line 4
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting '{' in /in/4S7ts on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting '{' in /in/4S7ts on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `'{'' in /in/4S7ts on line 2
Process exited with code 255.
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