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<?php function sum(float ...$numbers) : float { $_intsum = null; $intsum = function ($sum, array $numbers) use(&$_intsum) { if (count($numbers) == 0) { return $sum; } $number = array_shift($numbers); $sum += $number; return $_intsum($sum, $numbers); }; $_intsum = $intsum; return $intsum(0, $numbers); } echo call_user_func('sum', range(1, 1000)); echo PHP_EOL; echo sum(1.5, 2, 3, 4); echo PHP_EOL; try { sum('a', 'b', 'c'); } catch (Error $e) { echo $e->getMessage(); }
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught TypeError: sum(): Argument #1 must be of type float, array given, called in /in/65aQu on line 20 and defined in /in/65aQu:3 Stack trace: #0 /in/65aQu(20): sum(Array) #1 {main} thrown in /in/65aQu on line 3
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 sum() must be of the type float, array given, called in /in/65aQu on line 20 and defined in /in/65aQu:3 Stack trace: #0 /in/65aQu(20): sum(Array) #1 {main} thrown in /in/65aQu on line 3
Process exited with code 255.
Output for 5.6.0 - 5.6.40
Parse error: syntax error, unexpected ':', expecting '{' in /in/65aQu on line 3
Process exited with code 255.
Output for 5.5.0 - 5.5.38
Parse error: syntax error, unexpected '.', expecting '&' or variable (T_VARIABLE) in /in/65aQu on line 3
Process exited with code 255.
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