Online PHP editor | perf for 8ECVS

<?php define('WAR_CODES', [ ' ' => '', // World War 1 'A' => 'Allied Forces', 'AFG' => 'Australian - War on Terrorism', 'AGX' => 'Act of Grace', 'ALX' => 'Algeria - World War 2', 'ARG' => 'Argentina - Gulf War', 'ARX' => 'Argentina - World War 2', 'BAG' => 'Bahrain - Gulf War', 'BAL' => 'Peacekeeping - Balkans', 'BCG' => 'Bangladesh - Gulf War', 'BG' => 'Belgium - World War 1', 'BGG' => 'Belgium - Gulf War', 'BGK' => 'Belgium - Korean War', 'BGX' => 'Belgium - World War 2', 'BRX' => 'Brazil - World War 2', 'BUG' => 'Bulgaria - Gulf War', 'BUR' => 'Burma', 'BUX' => 'Bulgaria - World War 2', 'CAM' => 'Australian - Cambodian Service', 'CCG' => 'Canadian - Gulf War', 'CHX' => 'China - World War 2', 'CIX' => 'Chile - World War 2', 'CLK' => 'Colombia - Korean War', 'CN' => 'Canadian - World War 1', 'CNK' => 'Canadian - Korean War', 'CNS' => 'Canadian - Other Service', 'CNX' => 'Canadian - World War 2', 'CON' => 'Peacekeeping - Congo', 'CYP' => 'Peacekeeping - Cyprus', 'CZG' => 'Czechoslovakia - Gulf War', 'CZX' => 'Czechoslovakia - World War 2', 'DEG' => 'Denmark - Gulf War', 'DNK' => 'Denmark - Korean War', 'DNX' => 'Denmark - World War 2', 'EGG' => 'Egypt - Gulf War', 'EGX' => 'Egypt - World War 2', 'EGY' => 'Peacekeeping - Egypt', 'ESX' => 'Estonia - World War 2', 'ET' => 'Australian - East Timor Service', 'ETK' => 'Ethiopia - Korean War', 'ETX' => 'Ethiopia - World War 2', 'FIJ' => 'Fiji', 'FIX' => 'Finland - World War 2', 'FR' => 'France - World War 1', 'FRG' => 'France - Gulf War', 'FRK' => 'France - Korean War', 'FRX' => 'France - World War 2', 'FW' => 'Australian - World War 1', 'GHA' => 'Ghana', 'GR' => 'Greece - World War 1', 'GRE' => 'Peacekeeping - Greece', 'GRG' => 'Greece - Gulf War', 'GRK' => 'Greece - Korean War', 'GRX' => 'Greece - World War 2', 'GW' => 'Australian - Gulf War Service', 'HKS' => 'Hong Kong', 'HKX' => 'Hong Kong - World War 2', 'HLG' => 'Netherlands - Gulf War', 'HLK' => 'Netherlands - Korea', 'HLX' => 'Netherlands - World War 2', 'HUX' => 'Hungary - World War 2', 'IDA' => 'Peacekeeping - Indonesia', 'IND' => 'India', 'IQ' => 'Australian - War in Iraq', 'ISR' => 'Peacekeeping - Israel', 'IT' => 'Italy - World War 1', 'ITG' => 'Italy - Gulf War', 'ITK' => 'Italy - Korean War', 'ITX' => 'Italy - World War 2', 'IV' => 'Indigenous Veterans of PNG', 'JA' => 'Japan - World War 1', 'KM' => 'Australian - Korean/Malayan Service', 'KO' => 'South Korea - Korean War', 'KOS' => 'South Korea - Vietnam War', 'KSH' => 'Peacekeeping - Kashmir', 'KUG' => 'Kuwait - Gulf War', 'KYA' => 'Kenya', 'LAX' => 'Latvia - World War 2', 'LBX' => 'Liberia - World War 2', 'LXK' => 'Luxembourg - Korean War', 'MAL' => 'Malaysian Pensioners', 'MAR' => 'Allied Mariner- World War 2', 'MAU' => 'Mauritius', 'MLS' => 'Malaysia/Singapore', 'MO' => 'Montenegro - World War 1', 'MOG' => 'Morocco - Gulf War', 'MTX' => 'Malta - World War 2', 'MWI' => 'Malawi', 'N' => 'New Zealand - World War 1', 'NBA' => 'Australian - Namibian Service', 'NCG' => 'New Zealand - Gulf War', 'NF' => 'Newfoundland', 'NG' => 'New Guinea Civilians', 'NGR' => 'Nigeria', 'NIG' => 'Niger - Gulf War', 'NK' => 'New Zealand - Korean War', 'NRD' => 'Northern Zimbabwe (Rhodesia)', 'NSM' => 'New Zealand - Serving Member', 'NSS' => 'New Zealand Special O\'seas Service', 'NSW' => 'New Zealand Merchant Mariner - WW2', 'NWG' => 'Norway - Gulf War', 'NWK' => 'Norway - Korean War', 'NWX' => 'Norway - World War 2', 'NX' => 'New Zealand - World War 2', 'OMG' => 'Oman - Gulf War', 'P' => 'British - World War 1', 'PAD' => 'British Admiralty', 'PAG' => 'Pakistan - Gulf War', 'PAL' => 'Peacekeeping - Palestine', 'PAM' => 'British Air Ministry', 'PAX' => 'Panama - World War 2', 'PCA' => 'British Crown Agents', 'PCG' => 'British - Gulf War', 'PCR' => 'British Ministry O\'seas Development', 'PCV' => 'British Civilians', 'PHK' => 'Philippines - Korean War', 'PHS' => 'Philippines - Vietnam War', 'PHX' => 'Philippines - World War 2', 'PK' => 'British - Korean/Malayan Service', 'PLG' => 'Poland - Gulf War', 'PLX' => 'Poland - World War 2', 'PMS' => 'British Merchant Mariner - WW1', 'PO' => 'Portugal - World War 1', 'PSM' => 'British Serving Member', 'PSW' => 'British Merchant Mariner - WW2', 'PWO' => 'British War Office', 'PX' => 'British - World War 2', 'QAG' => 'Qatar - Gulf War', 'RD' => 'Zimbabwe (Rhodesia) - World War 1', 'RDX' => 'Zimbabwe (Rhodesia) - World War 2', 'RM' => 'Romania - World War 1', 'RU' => 'Russia - World War 1', 'RUG' => 'Russia - Gulf War', 'RUX' => 'Russia - World War 2', 'SA' => 'South Africa - World War 1', 'SAG' => 'Saudi Arabia - Gulf War', 'SAX' => 'South Africa - World War 2', 'SCG' => 'Sierra Leone - Gulf War', 'SE' => 'Serbia - World War 1', 'SEG' => 'Senegal - Gulf War', 'SIN' => 'Peacekeeping - Sinai', 'SL' => 'Sierra Leone', 'SM' => 'Australian - Serving Member', 'SO' => 'Australian - Somalian Service', 'SPG' => 'Spain - Gulf War', 'SR' => 'Australian - Malayan Emergency', 'SS' => 'Australian Special Overseas Service', 'SUD' => 'Sudan', 'SWK' => 'Sweden - Korean War', 'SWP' => 'Australian Merchant Mariner - WW2', 'SYG' => 'Syria - Gulf War', 'SYR' => 'Peacekeeping - Syria', 'SYX' => 'Syria - World War 2', 'THK' => 'Thailand - Korean War', 'THS' => 'Thailand - Vietnam War', 'TRG' => 'Turkey - Gulf War', 'TRK' => 'Turkey - Korean War', 'TZA' => 'Tanzania (Tanzanyika/Zanzibar)', 'UAG' => 'United Arab Emirates - Gulf War', 'UB' => 'Australian - Ubon 1965-68', 'URX' => 'Uruguay - World War 2', 'US' => 'United States - World War 1', 'USG' => 'United States - Gulf War', 'USK' => 'United States - Korean War', 'USS' => 'United States - Vietnam War', 'USX' => 'United States - World War 2', 'V' => 'Australian - Serving Member', 'VEX' => 'Venezuela - World War 2', 'VNS' => 'South Vietnam - Vietnam War', 'X' => 'Australian - World War 2', 'YEM' => 'Peacekeeping - Yemen', 'YGX' => 'Yugoslavia - World War 2', 'YU' => 'Australian - Yugoslavian Service', 'ZIM' => 'Peacekeeping - Zimbabwe', ]); $groups = [1 => '']; foreach (WAR_CODES as $code => $description) { switch (strlen($code)) { case 1: $groups[1] .= $code; break; case 2: $groups[2][$code[0]][] = $code[1]; break; case 3: $groups[3][$code[0]][$code[1]][] = $code[2]; break; } } $groups[1] = "[{$groups[1]}]\d{6}"; foreach ($groups[2] as $first => &$seconds) { $seconds = count($seconds) === 1 ? "$first{$seconds[0]}" : sprintf('%s[%s]', $first, implode($seconds)); } $groups[2] = '(?:' . implode('|', $groups[2]) . ')\d{5}'; foreach ($groups[3] as $first => &$seconds) { foreach ($seconds as $second => &$thirds) { $thirds = count($thirds) === 1 ? "$second{$thirds[0]}" : sprintf('%s[%s]', $second, implode($thirds)); } $seconds = count($seconds) === 1 ? "$first$thirds" : sprintf('%s(?:%s)', $first, implode('|', $seconds)); } $groups[3] = '(?:' . implode('|', $groups[3]) . ')\d{4}'; ksort($groups); echo implode("\n|", $groups);

Version	System time (s)	User time (s)	Memory (MiB)
8.4.12	0.011	0.010	24.11
8.4.11	0.007	0.003	22.55
8.4.10	0.013	0.008	17.59
8.4.9	0.011	0.009	20.75
8.4.8	0.011	0.009	17.95
8.4.7	0.011	0.009	17.85
8.4.6	0.011	0.012	18.88
8.4.5	0.009	0.008	18.73
8.4.4	0.013	0.006	19.46
8.4.3	0.017	0.003	20.54
8.4.2	0.011	0.007	17.89
8.4.1	0.009	0.009	22.11
8.3.25	0.011	0.008	18.97
8.3.24	0.006	0.005	17.42
8.3.23	0.008	0.008	16.72
8.3.22	0.011	0.009	21.22
8.3.21	0.010	0.005	18.26
8.3.20	0.006	0.004	16.75
8.3.19	0.013	0.007	17.20
8.3.18	0.009	0.011	18.86
8.3.17	0.009	0.009	20.87
8.3.16	0.012	0.006	17.12
8.3.15	0.009	0.009	16.82
8.3.14	0.004	0.004	17.15
8.3.13	0.000	0.008	18.50
8.3.12	0.016	0.000	19.11
8.3.11	0.010	0.010	20.94
8.3.10	0.006	0.003	24.06
8.3.9	0.000	0.008	26.77
8.3.8	0.003	0.006	16.75
8.3.7	0.009	0.006	16.61
8.3.6	0.010	0.013	16.75
8.3.5	0.007	0.014	20.30
8.3.4	0.008	0.008	21.98
8.3.3	0.016	0.006	18.71
8.3.2	0.004	0.004	24.18
8.3.1	0.008	0.000	24.66
8.3.0	0.004	0.004	26.16
8.2.29	0.010	0.011	22.15
8.2.28	0.012	0.007	18.50
8.2.27	0.006	0.009	16.58
8.2.26	0.000	0.018	16.89
8.2.25	0.000	0.008	16.89
8.2.24	0.005	0.003	18.84
8.2.23	0.009	0.003	22.58
8.2.22	0.008	0.000	37.54
8.2.21	0.004	0.004	26.77
8.2.20	0.006	0.003	16.88
8.2.19	0.006	0.009	16.58
8.2.18	0.010	0.010	25.92
8.2.17	0.004	0.011	19.22
8.2.16	0.014	0.000	22.96
8.2.15	0.000	0.009	25.66
8.2.14	0.004	0.004	24.66
8.2.13	0.004	0.004	26.16
8.2.12	0.004	0.004	20.57
8.2.11	0.006	0.003	22.25
8.2.10	0.005	0.005	18.03
8.2.9	0.006	0.003	19.50
8.2.8	0.003	0.005	17.97
8.2.7	0.004	0.004	17.50
8.2.6	0.000	0.008	17.93
8.2.5	0.006	0.003	18.07
8.2.4	0.005	0.003	20.01
8.2.3	0.008	0.000	18.19
8.2.2	0.003	0.006	20.45
8.2.1	0.000	0.008	18.27
8.2.0	0.004	0.004	19.30
8.1.33	0.005	0.004	22.25
8.1.32	0.010	0.008	17.66
8.1.31	0.000	0.009	16.27
8.1.30	0.011	0.008	18.31
8.1.29	0.006	0.003	18.88
8.1.28	0.012	0.003	25.92
8.1.27	0.006	0.003	20.39
8.1.26	0.006	0.003	26.35
8.1.25	0.004	0.004	28.09
8.1.24	0.003	0.007	19.02
8.1.23	0.008	0.004	19.15
8.1.22	0.000	0.008	17.91
8.1.21	0.000	0.008	18.77
8.1.20	0.003	0.006	17.48
8.1.19	0.000	0.009	17.35
8.1.18	0.008	0.000	18.10
8.1.17	0.008	0.000	18.77
8.1.16	0.000	0.007	18.91
8.1.15	0.003	0.006	18.68
8.1.14	0.000	0.008	17.45
8.1.13	0.003	0.003	18.98
8.1.12	0.004	0.004	17.45
8.1.11	0.000	0.007	17.38
8.1.10	0.000	0.007	17.56
8.1.9	0.003	0.006	17.47
8.1.8	0.003	0.005	17.55
8.1.7	0.005	0.003	17.59
8.1.6	0.000	0.007	17.71
8.1.5	0.002	0.005	17.63
8.1.4	0.004	0.004	17.43
8.1.3	0.000	0.008	17.75
8.1.2	0.007	0.000	17.63
8.1.1	0.005	0.008	17.07
8.1.0	0.006	0.003	17.59
8.0.30	0.000	0.008	18.77
8.0.29	0.004	0.004	17.18
8.0.28	0.004	0.004	18.51
8.0.27	0.000	0.007	16.82
8.0.26	0.006	0.000	18.53
8.0.25	0.007	0.000	17.00
8.0.24	0.006	0.003	17.11
8.0.23	0.004	0.004	16.91
8.0.22	0.003	0.006	16.81
8.0.21	0.006	0.004	16.66
8.0.20	0.011	0.003	16.21
8.0.19	0.007	0.006	16.89
8.0.18	0.012	0.004	16.84
8.0.17	0.007	0.008	16.63
8.0.16	0.013	0.000	16.69
8.0.15	0.005	0.005	16.39
8.0.14	0.009	0.005	16.61
8.0.13	0.009	0.006	16.21
8.0.12	0.012	0.000	16.39
8.0.11	0.010	0.003	16.63
8.0.10	0.007	0.008	16.68
8.0.9	0.013	0.000	16.46
8.0.8	0.010	0.002	16.65
8.0.7	0.013	0.000	16.71
8.0.6	0.009	0.006	16.33
8.0.5	0.004	0.009	16.54
8.0.3	0.011	0.003	16.53
8.0.2	0.012	0.004	16.41
8.0.1	0.006	0.009	16.72
7.4.33	0.007	0.000	15.55
7.4.32	0.007	0.000	16.48
7.4.30	0.012	0.005	16.52
7.4.29	0.009	0.003	16.37
7.4.28	0.005	0.011	16.09
7.4.27	0.012	0.003	16.47
7.4.26	0.017	0.000	16.67
7.4.25	0.013	0.000	16.52
7.4.24	0.005	0.009	16.39
7.4.23	0.008	0.008	16.26
7.4.22	0.007	0.002	16.34
7.4.21	0.011	0.004	16.13
7.4.20	0.005	0.010	16.62
7.4.19	0.013	0.003	16.48
7.4.18	0.010	0.003	16.47
7.4.16	0.006	0.010	16.26
7.4.15	0.009	0.002	16.39
7.4.14	0.003	0.009	16.34
7.4.13	0.011	0.003	16.08
7.4.12	0.013	0.000	15.80
7.4.11	0.006	0.006	16.24
7.4.10	0.009	0.000	16.34
7.4.9	0.007	0.004	15.76
7.4.8	0.005	0.005	16.27
7.4.7	0.010	0.000	16.44
7.4.6	0.008	0.006	16.16
7.4.5	0.010	0.003	16.34
7.4.4	0.013	0.000	16.34
7.4.3	0.008	0.004	16.01
7.4.2	0.005	0.006	16.14
7.4.1	0.009	0.003	16.24
7.4.0	0.013	0.000	16.25