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<?php function computeAllPermutations(array $words, array $separators): array { switch (count($words)) { case 0: return []; case 1: return [$words[0]]; default: $permutations = []; foreach (computeAllPermutations(array_slice($words, 1), $separators) as $subPermutation) { foreach ($separators as $separator) { $permutations[] = $words[0] . $separator . $subPermutation; } } return $permutations; } } $char = ["-", "_", "|", "+", "~"]; $MyString = "this is test string"; $words = preg_split('/\h+/', $MyString); print_r(computeAllPermutations($words, $char));
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.31, 8.2.0 - 8.2.26, 8.3.0 - 8.3.14, 8.4.1
Array ( [0] => this-is-test-string [1] => this_is-test-string [2] => this|is-test-string [3] => this+is-test-string [4] => this~is-test-string [5] => this-is_test-string [6] => this_is_test-string [7] => this|is_test-string [8] => this+is_test-string [9] => this~is_test-string [10] => this-is|test-string [11] => this_is|test-string [12] => this|is|test-string [13] => this+is|test-string [14] => this~is|test-string [15] => this-is+test-string [16] => this_is+test-string [17] => this|is+test-string [18] => this+is+test-string [19] => this~is+test-string [20] => this-is~test-string [21] => this_is~test-string [22] => this|is~test-string [23] => this+is~test-string [24] => this~is~test-string [25] => this-is-test_string [26] => this_is-test_string [27] => this|is-test_string [28] => this+is-test_string [29] => this~is-test_string [30] => this-is_test_string [31] => this_is_test_string [32] => this|is_test_string [33] => this+is_test_string [34] => this~is_test_string [35] => this-is|test_string [36] => this_is|test_string [37] => this|is|test_string [38] => this+is|test_string [39] => this~is|test_string [40] => this-is+test_string [41] => this_is+test_string [42] => this|is+test_string [43] => this+is+test_string [44] => this~is+test_string [45] => this-is~test_string [46] => this_is~test_string [47] => this|is~test_string [48] => this+is~test_string [49] => this~is~test_string [50] => this-is-test|string [51] => this_is-test|string [52] => this|is-test|string [53] => this+is-test|string [54] => this~is-test|string [55] => this-is_test|string [56] => this_is_test|string [57] => this|is_test|string [58] => this+is_test|string [59] => this~is_test|string [60] => this-is|test|string [61] => this_is|test|string [62] => this|is|test|string [63] => this+is|test|string [64] => this~is|test|string [65] => this-is+test|string [66] => this_is+test|string [67] => this|is+test|string [68] => this+is+test|string [69] => this~is+test|string [70] => this-is~test|string [71] => this_is~test|string [72] => this|is~test|string [73] => this+is~test|string [74] => this~is~test|string [75] => this-is-test+string [76] => this_is-test+string [77] => this|is-test+string [78] => this+is-test+string [79] => this~is-test+string [80] => this-is_test+string [81] => this_is_test+string [82] => this|is_test+string [83] => this+is_test+string [84] => this~is_test+string [85] => this-is|test+string [86] => this_is|test+string [87] => this|is|test+string [88] => this+is|test+string [89] => this~is|test+string [90] => this-is+test+string [91] => this_is+test+string [92] => this|is+test+string [93] => this+is+test+string [94] => this~is+test+string [95] => this-is~test+string [96] => this_is~test+string [97] => this|is~test+string [98] => this+is~test+string [99] => this~is~test+string [100] => this-is-test~string [101] => this_is-test~string [102] => this|is-test~string [103] => this+is-test~string [104] => this~is-test~string [105] => this-is_test~string [106] => this_is_test~string [107] => this|is_test~string [108] => this+is_test~string [109] => this~is_test~string [110] => this-is|test~string [111] => this_is|test~string [112] => this|is|test~string [113] => this+is|test~string [114] => this~is|test~string [115] => this-is+test~string [116] => this_is+test~string [117] => this|is+test~string [118] => this+is+test~string [119] => this~is+test~string [120] => this-is~test~string [121] => this_is~test~string [122] => this|is~test~string [123] => this+is~test~string [124] => this~is~test~string )
preferences:
104.39 ms | 418 KiB | 5 Q