Online PHP editor | perf for kI5eo

<?php function parseRollCode($rollCode) { $cleanRollCode = preg_replace('/\s+/', '', strtolower($rollCode)); $intro = "Dice Roll: {$cleanRollCode}"; $error = "Invalid Roll Code"; $result = [ 'input' => $rollCode, 'total' => 0, 'detailText' => $intro ]; /* $out... [0] => roll tokens (optional leading sign) [1] => optional signs [2] => number&type die segments [3] => reroll threshold segments [4] => keep setting segments [5] => constant segments */ if (!preg_match_all('~\G(^-?|[+-])(?:(\d+d\d+)(r\d+)?([v^]\d+)?|(\d+))(?=[+-]|$)~x', $cleanRollCode, $out)) { $result['detailText'] .= "\n{$error}"; return $result; } foreach ($out[0] as $index => $segment) { $result['detailText'] .= "\n{$segment} Results:"; if (!empty($out[5][$index])) { $result['detailText'] .= ' (subtotal: ' . ((int)$segment) . ')'; $result['total'] += $segment; } else { // dice count & die type [$diceCount, $dieType] = explode('d', $out[2][$index], 2); // positive or negative arithmetic $signFactor = (!empty($out[1][$index][0]) && $out[1][$index][0] == '-' ? -1 : 1); // reroll threshold $rerollThreshold = (int)ltrim($out[3][$index] ?? 0, 'r'); if ($rerollThreshold >= $dieType) { return ['input' => $rollCode, 'total' => 0, 'detailText' => "{$intro}\n{$error}"]; } $rollResults = []; for ($r = 0; $r < $diceCount; ++$r) { $rollResults[] = rand($rerollThreshold + 1, $dieType); } // keep settings if (!empty($out[4][$index])) { $keepCount = ltrim($out[4][$index], '^v'); if ($keepCount > $diceCount) { return ['input' => $rollCode, 'total' => 0, 'detailText' => "{$intro}\n{$error}"]; } if ($out[4][$index][0] == '^') { arsort($rollResults); } else { asort($rollResults); } $keep = array_slice($rollResults, 0, $keepCount, true); $subtotal = array_sum($keep) * $signFactor; for ($i = 0, $len = count($rollResults); $i < $len; ++$i) { $result['detailText'] .= ' ' . ($keep[$i] ?? "<s>{$rollResults[$i]}</s>"); } $result['detailText'] .= " (subtotal: {$subtotal})"; $result['total'] += $subtotal; } else { $subtotal = array_sum($rollResults) * $signFactor; $result['detailText'] .= " " . implode(" ", $rollResults) . " (subtotal: {$subtotal})"; $result['total'] += $subtotal; } } } return $result; } $rolls = ["1 d2 0", "-1d20+5", "d20", "2d20^1", "4d6r1^3", "5d20^3", "5d8v2", "2d20v1", "5+3d4", "3d20^1", "3d6r1 + 1d4r2", "-1d20", "1d20+5", "1d20 + 5", "1d-20", "1d20+1d6", "5d20-3d6", "1d6r2", "5d6r-6", "3d20^1v1", "1d20r30", "1d20r20", "1d20r19", "1d20v2", "1d20v1", "1d20^2", "1d20+5d8r2^3-5-1d6+3d4+2-4+6-8"]; foreach ($rolls as $roll) { $rollResult = parseRollCode($roll); echo "{$rollResult['detailText']}\nTotal: {$rollResult['total']}\n---\n"; }

Version	System time (s)	User time (s)	Memory (MiB)
8.0.1	0.018	0.003	17.29
8.0.0	0.010	0.010	17.53
7.4.14	0.017	0.000	16.76
7.4.13	0.008	0.011	16.62
7.4.12	0.011	0.008	16.94
7.4.11	0.010	0.010	16.73
7.4.10	0.004	0.015	16.68
7.4.9	0.006	0.013	16.98
7.4.8	0.006	0.016	16.85
7.4.7	0.012	0.006	16.63
7.4.6	0.018	0.003	16.74
7.4.5	0.014	0.006	16.57
7.4.4	0.008	0.011	16.69
7.4.3	0.006	0.012	16.85
7.4.2	0.022	0.000	16.50
7.4.1	0.017	0.005	16.75
7.4.0	0.011	0.008	16.68
7.3.26	0.003	0.016	16.65
7.3.25	0.013	0.006	16.57
7.3.24	0.007	0.011	16.59
7.3.23	0.013	0.005	16.49
7.3.22	0.013	0.005	16.48
7.3.21	0.006	0.019	16.60
7.3.20	0.012	0.009	17.00
7.3.19	0.005	0.013	16.65
7.3.18	0.007	0.011	16.72
7.3.17	0.012	0.006	16.57
7.3.16	0.009	0.009	16.72
7.3.15	0.011	0.008	16.77
7.3.14	0.015	0.006	16.77
7.3.13	0.011	0.010	16.55
7.3.12	0.005	0.016	16.74
7.3.11	0.012	0.011	16.64
7.3.10	0.009	0.010	16.43
7.3.9	0.012	0.008	16.85
7.3.8	0.012	0.010	16.69
7.3.7	0.013	0.007	16.57
7.3.6	0.010	0.008	16.60
7.3.5	0.011	0.009	16.57
7.3.4	0.010	0.010	16.62
7.3.3	0.009	0.010	16.62
7.3.2	0.010	0.009	16.71
7.3.1	0.013	0.009	16.57
7.3.0	0.012	0.009	16.62
7.2.34	0.010	0.013	17.00
7.2.33	0.021	0.007	16.84
7.2.32	0.019	0.011	16.90
7.2.31	0.025	0.004	16.93
7.2.30	0.019	0.014	16.90
7.2.29	0.017	0.013	16.81
7.2.28	0.020	0.014	16.98
7.2.27	0.026	0.007	17.11
7.2.26	0.019	0.010	16.86
7.2.25	0.018	0.007	16.94
7.2.24	0.019	0.006	16.85
7.2.23	0.018	0.008	16.85
7.2.22	0.020	0.003	16.96
7.2.21	0.014	0.012	16.83
7.2.20	0.024	0.002	16.89
7.2.19	0.015	0.009	16.91
7.2.18	0.017	0.008	16.92
7.2.17	0.014	0.010	16.71
7.2.16	0.011	0.016	16.96
7.2.15	0.014	0.013	17.04
7.2.14	0.019	0.008	16.85
7.2.13	0.021	0.007	16.91
7.2.12	0.019	0.006	16.78
7.2.11	0.021	0.006	16.91
7.2.10	0.020	0.014	16.92
7.2.9	0.017	0.013	16.95
7.2.8	0.019	0.009	16.86
7.2.7	0.036	0.011	16.82
7.2.6	0.019	0.007	16.92
7.2.5	0.020	0.005	16.87
7.2.4	0.021	0.009	17.02
7.2.3	0.018	0.010	17.03
7.2.2	0.018	0.008	16.85
7.2.1	0.013	0.015	16.86
7.2.0	0.013	0.017	16.83