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run code in 300+ PHP versions simultaneously
<?php class NullKeyIterator extends \ArrayIterator { public function key() { return 3.22; } } $iterator = new NullKeyIterator(range(1,10)); foreach($iterator as $key => $value) { var_dump($key, $value); }
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Deprecated: Return type of NullKeyIterator::key() should either be compatible with ArrayIterator::key(): string|int|null, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/nAoW3 on line 5 float(3.22) int(1) float(3.22) int(2) float(3.22) int(3) float(3.22) int(4) float(3.22) int(5) float(3.22) int(6) float(3.22) int(7) float(3.22) int(8) float(3.22) int(9) float(3.22) int(10)
Output for 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 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
float(3.22) int(1) float(3.22) int(2) float(3.22) int(3) float(3.22) int(4) float(3.22) int(5) float(3.22) int(6) float(3.22) int(7) float(3.22) int(8) float(3.22) int(9) float(3.22) int(10)
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45
int(3) int(1) int(3) int(2) int(3) int(3) int(3) int(4) int(3) int(5) int(3) int(6) int(3) int(7) int(3) int(8) int(3) int(9) int(3) int(10)
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/nAoW3 on line 3 int(3) int(1) int(3) int(2) int(3) int(3) int(3) int(4) int(3) int(5) int(3) int(6) int(3) int(7) int(3) int(8) int(3) int(9) int(3) int(10)
Output for 4.4.2 - 4.4.9
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/nAoW3 on line 3 Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/nAoW3 on line 5
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
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/nAoW3 on line 3 Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/nAoW3 on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/nAoW3 on line 3 Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/nAoW3 on line 5
Process exited with code 255.
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217.69 ms | 405 KiB | 343 Q