3v4l.org

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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 += $number; var_dump($sum); var_dump($numbers); return $_intsum($sum, $numbers); }; $_intsum = $intsum; return $intsum(0, $numbers); } echo sum(1, 2, 3, 4); 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 git.master, git.master_jit, rfc.property-hooks
float(1) array(3) { [0]=> float(2) [1]=> float(3) [2]=> float(4) } float(3) array(2) { [0]=> float(3) [1]=> float(4) } float(6) array(1) { [0]=> float(4) } float(10) array(0) { } 10 float(1.5) array(3) { [0]=> float(2) [1]=> float(3) [2]=> float(4) } float(3.5) array(2) { [0]=> float(3) [1]=> float(4) } float(6.5) array(1) { [0]=> float(4) } float(10.5) array(0) { } 10.5 sum(): Argument #1 must be of type float, string given, called in /in/r66l3 on line 28

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