Online PHP editor | perf for lcsC9

)<?php class SinglePlaceholder { } class VariadicPlaceholder { } $PLACEHOLDER = new SinglePlaceholder(); $VARIADIC_PLACEHOLDER = new VariadicPlaceholder(); function partial(callable $in, ...$args) { $fmap = []; $partialIndex = 0; $variadic = false; foreach ($args as $k => $arg) { if ($arg instanceof SinglePlaceholder) { $fmap[$partialIndex++] = $k; } if ($arg instanceof VariadicPlaceholder) { $variadic = true; if ($k < count($args) - 1) { throw new ArgumentCountError('Only the last parameter may be a variadic placeholder'); } $fmap[$partialIndex++] = $k; } } return static function (...$partialArgs) use ($in, $args, $fmap, $variadic) { if (count($partialArgs) < count($fmap)) { throw new ArgumentCountError('Expected ' . count($fmap) . ' only received ' . count($partialArgs)); } foreach ($partialArgs as $pIndex => $pValue) { $targetSlot = $fmap[$pIndex] ?? null; if ($targetSlot === null) { if ($variadic) { $args[] = $pValue; } else { throw new ArgumentCountError('Too many arguments without a variadic placeholder'); } } else { $args[$targetSlot] = $pValue; } } return $in(...$args); }; } function foo($a, $b, $c, $d, $e) { var_dump($a, $b, $c, $d, $e); } print_r(partial('foo', 1, $PLACEHOLDER, 3, $PLACEHOLDER, 5)(2, 4)); print_r(partial('foo', $VARIADIC_PLACEHOLDER)('a', 'b', 'c', 'd', 'e')); print_r(partial('foo', 1, 2, 3, 4, 5)());

Version	System time (s)	User time (s)	Memory (MiB)
8.3.6	0.011	0.004	16.75
8.3.5	0.011	0.011	18.09
8.3.4	0.011	0.011	19.28
8.3.3	0.007	0.007	18.75
8.3.2	0.004	0.004	24.18
8.3.1	0.005	0.003	24.66
8.3.0	0.008	0.000	26.16
8.2.18	0.010	0.010	25.92
8.2.17	0.004	0.016	18.95
8.2.16	0.000	0.014	22.96
8.2.15	0.004	0.004	25.66
8.2.14	0.000	0.008	24.66
8.2.13	0.000	0.008	26.16
8.2.12	0.004	0.004	26.16
8.2.11	0.006	0.003	20.27
8.2.10	0.005	0.005	20.62
8.1.28	0.007	0.011	25.92
8.1.27	0.004	0.004	23.99
8.1.26	0.008	0.000	26.35
8.1.25	0.000	0.009	28.09
8.1.24	0.010	0.003	18.61
8.1.23	0.009	0.000	22.18
8.0.7	0.008	0.010	16.92