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<?php $letters1 = range('A', 'C'); $letters2 = array_merge([''], range('A', 'C')); foreach($letters1 as $l1) { foreach($letters2 as $l2) { for($i=1; $i<=20; ++$i) { $result[] = $i.$l1.$l2; } } } print_r($result);
Output for 8.0.1 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
Array ( [0] => 1A [1] => 2A [2] => 3A [3] => 4A [4] => 5A [5] => 6A [6] => 7A [7] => 8A [8] => 9A [9] => 10A [10] => 11A [11] => 12A [12] => 13A [13] => 14A [14] => 15A [15] => 16A [16] => 17A [17] => 18A [18] => 19A [19] => 20A [20] => 1AA [21] => 2AA [22] => 3AA [23] => 4AA [24] => 5AA [25] => 6AA [26] => 7AA [27] => 8AA [28] => 9AA [29] => 10AA [30] => 11AA [31] => 12AA [32] => 13AA [33] => 14AA [34] => 15AA [35] => 16AA [36] => 17AA [37] => 18AA [38] => 19AA [39] => 20AA [40] => 1AB [41] => 2AB [42] => 3AB [43] => 4AB [44] => 5AB [45] => 6AB [46] => 7AB [47] => 8AB [48] => 9AB [49] => 10AB [50] => 11AB [51] => 12AB [52] => 13AB [53] => 14AB [54] => 15AB [55] => 16AB [56] => 17AB [57] => 18AB [58] => 19AB [59] => 20AB [60] => 1AC [61] => 2AC [62] => 3AC [63] => 4AC [64] => 5AC [65] => 6AC [66] => 7AC [67] => 8AC [68] => 9AC [69] => 10AC [70] => 11AC [71] => 12AC [72] => 13AC [73] => 14AC [74] => 15AC [75] => 16AC [76] => 17AC [77] => 18AC [78] => 19AC [79] => 20AC [80] => 1B [81] => 2B [82] => 3B [83] => 4B [84] => 5B [85] => 6B [86] => 7B [87] => 8B [88] => 9B [89] => 10B [90] => 11B [91] => 12B [92] => 13B [93] => 14B [94] => 15B [95] => 16B [96] => 17B [97] => 18B [98] => 19B [99] => 20B [100] => 1BA [101] => 2BA [102] => 3BA [103] => 4BA [104] => 5BA [105] => 6BA [106] => 7BA [107] => 8BA [108] => 9BA [109] => 10BA [110] => 11BA [111] => 12BA [112] => 13BA [113] => 14BA [114] => 15BA [115] => 16BA [116] => 17BA [117] => 18BA [118] => 19BA [119] => 20BA [120] => 1BB [121] => 2BB [122] => 3BB [123] => 4BB [124] => 5BB [125] => 6BB [126] => 7BB [127] => 8BB [128] => 9BB [129] => 10BB [130] => 11BB [131] => 12BB [132] => 13BB [133] => 14BB [134] => 15BB [135] => 16BB [136] => 17BB [137] => 18BB [138] => 19BB [139] => 20BB [140] => 1BC [141] => 2BC [142] => 3BC [143] => 4BC [144] => 5BC [145] => 6BC [146] => 7BC [147] => 8BC [148] => 9BC [149] => 10BC [150] => 11BC [151] => 12BC [152] => 13BC [153] => 14BC [154] => 15BC [155] => 16BC [156] => 17BC [157] => 18BC [158] => 19BC [159] => 20BC [160] => 1C [161] => 2C [162] => 3C [163] => 4C [164] => 5C [165] => 6C [166] => 7C [167] => 8C [168] => 9C [169] => 10C [170] => 11C [171] => 12C [172] => 13C [173] => 14C [174] => 15C [175] => 16C [176] => 17C [177] => 18C [178] => 19C [179] => 20C [180] => 1CA [181] => 2CA [182] => 3CA [183] => 4CA [184] => 5CA [185] => 6CA [186] => 7CA [187] => 8CA [188] => 9CA [189] => 10CA [190] => 11CA [191] => 12CA [192] => 13CA [193] => 14CA [194] => 15CA [195] => 16CA [196] => 17CA [197] => 18CA [198] => 19CA [199] => 20CA [200] => 1CB [201] => 2CB [202] => 3CB [203] => 4CB [204] => 5CB [205] => 6CB [206] => 7CB [207] => 8CB [208] => 9CB [209] => 10CB [210] => 11CB [211] => 12CB [212] => 13CB [213] => 14CB [214] => 15CB [215] => 16CB [216] => 17CB [217] => 18CB [218] => 19CB [219] => 20CB [220] => 1CC [221] => 2CC [222] => 3CC [223] => 4CC [224] => 5CC [225] => 6CC [226] => 7CC [227] => 8CC [228] => 9CC [229] => 10CC [230] => 11CC [231] => 12CC [232] => 13CC [233] => 14CC [234] => 15CC [235] => 16CC [236] => 17CC [237] => 18CC [238] => 19CC [239] => 20CC )
preferences:
91.35 ms | 1716 KiB | 4 Q