Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
| 1 | <?php |
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| 20 | class JapanTelephoneExchangeNumberUtil |
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| 21 | { |
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| 22 | private static $telephoneExchangeNumberPrefectureCodeMap = [ |
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| 23 | 9969 => [46], |
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| 24 | 9913 => [46], |
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| 25 | 9912 => [46], |
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| 26 | 9802 => [47], |
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| 27 | 9496 => [40], |
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| 28 | 8514 => [32], |
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| 29 | 8512 => [32], |
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| 30 | 8477 => [34], |
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| 31 | 8396 => [35], |
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| 32 | 8388 => [35], |
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| 33 | 8387 => [35], |
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| 34 | 7468 => [29], |
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| 35 | 5979 => [24], |
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| 36 | 5769 => [21], |
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| 37 | 4998 => [13], |
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| 38 | 4996 => [13], |
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| 39 | 4994 => [13], |
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| 40 | 4992 => [13], |
||
| 41 | 1658 => [1], |
||
| 42 | 1656 => [1], |
||
| 43 | 1655 => [1], |
||
| 44 | 1654 => [1], |
||
| 45 | 1648 => [1], |
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| 46 | 1635 => [1], |
||
| 47 | 1634 => [1], |
||
| 48 | 1632 => [1], |
||
| 49 | 1587 => [1], |
||
| 50 | 1586 => [1], |
||
| 51 | 1564 => [1], |
||
| 52 | 1558 => [1], |
||
| 53 | 1547 => [1], |
||
| 54 | 1466 => [1], |
||
| 55 | 1457 => [1], |
||
| 56 | 1456 => [1], |
||
| 57 | 1398 => [1], |
||
| 58 | 1397 => [1], |
||
| 59 | 1392 => [1], |
||
| 60 | 1377 => [1], |
||
| 61 | 1374 => [1], |
||
| 62 | 1372 => [1], |
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| 63 | 1267 => [1], |
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| 64 | 997 => [46], |
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| 65 | 996 => [46], |
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| 66 | 995 => [46], |
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| 67 | 994 => [46], |
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| 68 | 993 => [46], |
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| 69 | 987 => [45], |
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| 70 | 986 => [46, 45], |
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| 71 | 985 => [45], |
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| 72 | 984 => [45], |
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| 73 | 983 => [45], |
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| 74 | 982 => [45], |
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| 75 | 980 => [47], |
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| 76 | 979 => [44, 40], |
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| 77 | 978 => [44], |
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| 78 | 977 => [44], |
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| 79 | 974 => [44], |
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| 80 | 973 => [44], |
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| 81 | 972 => [44], |
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| 82 | 969 => [43], |
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| 83 | 968 => [43], |
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| 84 | 967 => [43], |
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| 85 | 966 => [43], |
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| 86 | 965 => [43], |
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| 87 | 964 => [43], |
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| 88 | 959 => [42], |
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| 89 | 957 => [42], |
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| 90 | 956 => [42], |
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| 91 | 955 => [41, 42], |
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| 92 | 954 => [41], |
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| 93 | 952 => [41], |
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| 94 | 950 => [42], |
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| 95 | 949 => [40], |
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| 96 | 948 => [40], |
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| 97 | 947 => [40], |
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| 98 | 946 => [40], |
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| 99 | 944 => [43, 40], |
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| 100 | 943 => [40], |
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| 101 | 942 => [41, 40], |
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| 102 | 940 => [40], |
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| 103 | 930 => [40], |
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| 104 | 920 => [42], |
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| 105 | 898 => [38], |
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| 106 | 897 => [38], |
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| 107 | 896 => [38, 37], |
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| 108 | 895 => [38], |
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| 109 | 894 => [38], |
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| 110 | 893 => [38], |
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| 111 | 892 => [38], |
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| 112 | 889 => [39], |
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| 113 | 887 => [39], |
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| 114 | 885 => [36], |
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| 115 | 884 => [36], |
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| 116 | 883 => [36], |
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| 117 | 880 => [39], |
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| 118 | 879 => [37], |
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| 119 | 877 => [37], |
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| 120 | 875 => [37], |
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| 121 | 869 => [33], |
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| 122 | 868 => [33], |
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| 123 | 867 => [33], |
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| 124 | 866 => [33], |
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| 125 | 865 => [33], |
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| 126 | 863 => [33], |
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| 127 | 859 => [31], |
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| 128 | 858 => [31], |
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| 129 | 857 => [31], |
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| 130 | 856 => [32], |
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| 131 | 855 => [32], |
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| 132 | 854 => [32], |
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| 133 | 853 => [32], |
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| 134 | 852 => [32], |
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| 135 | 848 => [34], |
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| 136 | 847 => [34], |
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| 137 | 846 => [34], |
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| 138 | 845 => [34], |
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| 139 | 838 => [35], |
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| 140 | 837 => [35], |
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| 141 | 836 => [35], |
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| 142 | 835 => [35], |
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| 143 | 834 => [35], |
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| 144 | 833 => [35], |
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| 145 | 829 => [34], |
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| 146 | 827 => [34, 35], |
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| 147 | 826 => [34], |
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| 148 | 824 => [34], |
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| 149 | 823 => [34], |
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| 150 | 820 => [35], |
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| 151 | 799 => [28], |
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| 152 | 798 => [28], |
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| 153 | 797 => [28], |
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| 154 | 796 => [28], |
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| 155 | 795 => [28], |
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| 156 | 794 => [28], |
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| 157 | 791 => [28], |
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| 158 | 790 => [28], |
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| 159 | 779 => [18], |
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| 160 | 778 => [18], |
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| 161 | 776 => [18], |
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| 162 | 774 => [26], |
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| 163 | 773 => [26], |
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| 164 | 772 => [26], |
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| 165 | 771 => [26], |
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| 166 | 770 => [18], |
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| 167 | 768 => [17], |
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| 168 | 767 => [17], |
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| 169 | 766 => [16], |
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| 170 | 765 => [16], |
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| 171 | 763 => [16], |
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| 172 | 761 => [17], |
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| 173 | 749 => [25], |
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| 174 | 748 => [25], |
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| 175 | 747 => [29], |
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| 176 | 746 => [29], |
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| 177 | 745 => [29], |
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| 178 | 744 => [29], |
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| 179 | 743 => [27, 26, 29], |
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| 180 | 742 => [29], |
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| 181 | 740 => [25], |
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| 182 | 739 => [30], |
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| 183 | 738 => [30], |
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| 184 | 737 => [30], |
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| 185 | 736 => [30], |
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| 186 | 735 => [24, 30], |
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| 187 | 725 => [27], |
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| 188 | 721 => [27], |
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| 189 | 599 => [24], |
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| 190 | 598 => [24], |
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| 191 | 597 => [24], |
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| 192 | 596 => [24], |
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| 193 | 595 => [24], |
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| 194 | 594 => [24], |
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| 195 | 587 => [23], |
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| 196 | 586 => [23, 21], |
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| 197 | 585 => [21], |
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| 198 | 584 => [21], |
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| 199 | 581 => [21], |
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| 200 | 578 => [21], |
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| 201 | 577 => [21], |
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| 202 | 576 => [21], |
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| 203 | 575 => [21], |
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| 204 | 574 => [21], |
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| 205 | 573 => [21, 20], |
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| 206 | 572 => [21], |
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| 207 | 569 => [23], |
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| 208 | 568 => [23], |
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| 209 | 567 => [23, 24], |
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| 210 | 566 => [23], |
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| 211 | 565 => [23], |
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| 212 | 564 => [23], |
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| 213 | 563 => [23], |
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| 214 | 562 => [23], |
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| 215 | 561 => [23], |
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| 216 | 558 => [22], |
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| 217 | 557 => [22], |
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| 218 | 556 => [19], |
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| 219 | 555 => [19], |
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| 220 | 554 => [19], |
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| 221 | 553 => [19], |
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| 222 | 551 => [19], |
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| 223 | 550 => [22], |
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| 224 | 548 => [22], |
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| 225 | 547 => [22], |
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| 226 | 545 => [22], |
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| 227 | 544 => [22], |
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| 228 | 539 => [22], |
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| 229 | 538 => [22], |
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| 230 | 537 => [22], |
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| 231 | 536 => [23], |
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| 232 | 533 => [23], |
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| 233 | 532 => [23], |
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| 234 | 531 => [23], |
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| 235 | 495 => [11], |
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| 236 | 494 => [11], |
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| 237 | 493 => [11], |
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| 238 | 480 => [11], |
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| 239 | 479 => [8, 12], |
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| 240 | 478 => [12], |
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| 241 | 476 => [12], |
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| 242 | 475 => [12], |
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| 243 | 470 => [12], |
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| 244 | 467 => [14], |
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| 245 | 466 => [14], |
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| 246 | 465 => [14, 22], |
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| 247 | 463 => [14], |
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| 248 | 460 => [14, 22], |
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| 249 | 439 => [12], |
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| 250 | 438 => [12], |
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| 251 | 436 => [12], |
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| 252 | 428 => [13, 19], |
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| 253 | 422 => [13], |
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| 254 | 299 => [8], |
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| 255 | 297 => [8], |
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| 256 | 296 => [8, 9], |
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| 257 | 295 => [8], |
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| 258 | 294 => [8], |
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| 259 | 293 => [8], |
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| 260 | 291 => [8], |
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| 261 | 289 => [9], |
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| 262 | 288 => [9], |
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| 263 | 287 => [9], |
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| 264 | 285 => [9], |
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| 265 | 284 => [10, 9], |
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| 266 | 283 => [9], |
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| 267 | 282 => [9], |
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| 268 | 280 => [8, 11, 9], |
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| 269 | 279 => [10], |
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| 270 | 278 => [10], |
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| 271 | 277 => [10], |
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| 272 | 276 => [10, 11], |
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| 273 | 274 => [10, 11], |
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| 274 | 270 => [10], |
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| 275 | 269 => [20], |
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| 276 | 268 => [20], |
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| 277 | 267 => [20], |
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| 278 | 266 => [20], |
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| 279 | 265 => [20], |
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| 280 | 264 => [20], |
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| 281 | 263 => [20], |
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| 282 | 261 => [20], |
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| 283 | 260 => [20], |
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| 284 | 259 => [15], |
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| 285 | 258 => [15], |
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| 286 | 257 => [15], |
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| 287 | 256 => [15], |
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| 288 | 255 => [15], |
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| 289 | 254 => [15], |
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| 290 | 250 => [15], |
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| 291 | 248 => [7], |
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| 292 | 247 => [7], |
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| 293 | 246 => [7], |
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| 294 | 244 => [7], |
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| 295 | 243 => [7], |
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| 296 | 242 => [7], |
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| 297 | 241 => [7], |
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| 298 | 240 => [7], |
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| 299 | 238 => [6], |
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| 300 | 237 => [6], |
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| 301 | 235 => [6], |
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| 302 | 234 => [6], |
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| 303 | 233 => [6], |
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| 304 | 229 => [4], |
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| 305 | 228 => [4], |
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| 306 | 226 => [4], |
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| 307 | 225 => [4], |
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| 308 | 224 => [4], |
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| 309 | 223 => [4], |
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| 310 | 220 => [4], |
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| 311 | 198 => [3], |
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| 312 | 197 => [3], |
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| 313 | 195 => [3], |
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| 314 | 194 => [3], |
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| 315 | 193 => [3], |
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| 316 | 192 => [3], |
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| 317 | 191 => [3], |
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| 318 | 187 => [5], |
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| 319 | 186 => [5], |
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| 320 | 185 => [5], |
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| 321 | 184 => [5], |
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| 322 | 183 => [5], |
||
| 323 | 182 => [5], |
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| 324 | 179 => [2], |
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| 325 | 178 => [2], |
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| 326 | 176 => [2], |
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| 327 | 175 => [2], |
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| 328 | 174 => [2], |
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| 329 | 173 => [2], |
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| 330 | 172 => [2], |
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| 331 | 167 => [1], |
||
| 332 | 166 => [1], |
||
| 333 | 165 => [1], |
||
| 334 | 164 => [1], |
||
| 335 | 163 => [1], |
||
| 336 | 162 => [1], |
||
| 337 | 158 => [1], |
||
| 338 | 157 => [1], |
||
| 339 | 156 => [1], |
||
| 340 | 155 => [1], |
||
| 341 | 154 => [1], |
||
| 342 | 153 => [1], |
||
| 343 | 152 => [1], |
||
| 344 | 146 => [1], |
||
| 345 | 145 => [1], |
||
| 346 | 144 => [1], |
||
| 347 | 143 => [1], |
||
| 348 | 142 => [1], |
||
| 349 | 139 => [1], |
||
| 350 | 138 => [1], |
||
| 351 | 137 => [1], |
||
| 352 | 136 => [1], |
||
| 353 | 135 => [1], |
||
| 354 | 134 => [1], |
||
| 355 | 133 => [1], |
||
| 356 | 126 => [1], |
||
| 357 | 125 => [1], |
||
| 358 | 124 => [1], |
||
| 359 | 123 => [1], |
||
| 360 | 99 => [46], |
||
| 361 | 98 => [47], |
||
| 362 | 97 => [44], |
||
| 363 | 96 => [43], |
||
| 364 | 95 => [42], |
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| 365 | 93 => [40], |
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| 366 | 92 => [40], |
||
| 367 | 89 => [38], |
||
| 368 | 88 => [36, 39], |
||
| 369 | 87 => [37], |
||
| 370 | 86 => [33], |
||
| 371 | 84 => [34], |
||
| 372 | 83 => [35], |
||
| 373 | 82 => [34], |
||
| 374 | 79 => [28], |
||
| 375 | 78 => [28], |
||
| 376 | 77 => [26, 25], |
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| 377 | 76 => [17, 16], |
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| 378 | 75 => [27, 26], |
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| 379 | 73 => [30], |
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| 380 | 72 => [27, 28], |
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| 381 | 59 => [24], |
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| 382 | 58 => [21], |
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| 383 | 55 => [19, 22], |
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| 384 | 54 => [22], |
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| 385 | 53 => [22], |
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| 386 | 52 => [23], |
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| 387 | 49 => [11], |
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| 388 | 48 => [11], |
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| 389 | 47 => [12], |
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| 390 | 46 => [14], |
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| 391 | 45 => [14], |
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| 392 | 44 => [14, 13], |
||
| 393 | 43 => [12], |
||
| 394 | 42 => [13, 11, 14], |
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| 395 | 29 => [8], |
||
| 396 | 28 => [9], |
||
| 397 | 27 => [10], |
||
| 398 | 26 => [20], |
||
| 399 | 25 => [15], |
||
| 400 | 24 => [7], |
||
| 401 | 23 => [6], |
||
| 402 | 22 => [4], |
||
| 403 | 19 => [3], |
||
| 404 | 18 => [5], |
||
| 405 | 17 => [2], |
||
| 406 | 15 => [1], |
||
| 407 | 11 => [1], |
||
| 408 | 6 => [27, 28], |
||
| 409 | 4 => [11, 12], |
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| 410 | 3 => [13], |
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| 411 | ]; |
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| 412 | |||
| 413 | 3 | public static function telephoneNumberToPrefectureCode($tel) |
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| 444 | |||
| 445 | 3 | public static function telephoneNumberToPrefectureCodeStrict($tel) |
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| 480 | } |
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| 481 |