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<?php class foo implements Iterator { public function __construct() { $this->position = 0; } function rewind() { $this->position = 0; } function current() { return $this->array[$this->position]; } function key() { return $this->position; } function next() { ++$this->position; } function valid() { return isset($this->array[$this->position]); } static function bar() { return "brap brap"; } } echo foo::bar(); vardump (foo instanceOf Iterator);
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Deprecated: Return type of foo::current() should either be compatible with Iterator::current(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/PkMWD on line 13 Deprecated: Return type of foo::next() should either be compatible with Iterator::next(): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/PkMWD on line 21 Deprecated: Return type of foo::key() should either be compatible with Iterator::key(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/PkMWD on line 17 Deprecated: Return type of foo::valid() should either be compatible with Iterator::valid(): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/PkMWD on line 25 Deprecated: Return type of foo::rewind() should either be compatible with Iterator::rewind(): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/PkMWD on line 9 brap brap Fatal error: Uncaught Error: Call to undefined function vardump() in /in/PkMWD:35 Stack trace: #0 {main} thrown in /in/PkMWD on line 35
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, 8.0.0 - 8.0.30
brap brap Fatal error: Uncaught Error: Call to undefined function vardump() in /in/PkMWD:35 Stack trace: #0 {main} thrown in /in/PkMWD on line 35
Process exited with code 255.
Output for 5.0.0 - 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
brap brap Fatal error: Call to undefined function vardump() in /in/PkMWD on line 35
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting '{' in /in/PkMWD on line 3
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/PkMWD on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `'{'' in /in/PkMWD on line 3
Process exited with code 255.

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