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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10 | class Calender |
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11 | { |
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12 | const timezoneRegexPattern = '([-+][0-1]\d:[0-6]\d|Z*)'; |
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13 | private $year; |
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14 | private $month; |
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15 | private $day; |
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16 | private $timeZone; |
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17 | |||
18 | /** |
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19 | * Calender constructor. |
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20 | * |
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21 | * @param int|null $year |
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22 | * @param int|null $month |
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23 | * @param int|null $day |
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24 | * @param string|null $timezone |
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25 | */ |
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26 | private function __construct($year = null, $month = null, $day = null, $timezone = null) |
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35 | |||
36 | /** |
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37 | * @param int $year |null |
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38 | * @param int $month |null |
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39 | * @param int $day |null |
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40 | * |
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41 | * @return void |
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42 | */ |
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43 | private function validateInput($year = null, $month = null, $day = null) |
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52 | |||
53 | /** |
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54 | * @return void |
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55 | */ |
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56 | private function valdidateState() |
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65 | |||
66 | /** |
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67 | * @return int |
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68 | */ |
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69 | private function getMaxDays() |
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76 | |||
77 | /** |
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78 | * @return int |
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79 | */ |
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80 | private function getYearOrHolder() |
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87 | |||
88 | /** |
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89 | * @param string $day should match regex pattern ----\d\d |
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90 | * |
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91 | * @return \AlgoWeb\xsdTypes\AxillaryClasses\Calender |
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92 | */ |
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93 | View Code Duplication | public static function fromDay($day) |
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1 ignored issue
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94 | { |
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95 | $re = '/----(0[1-9]|1[0-9]|2[0-9]|3[0-1]|[1-9])([-+][0-1]\d:[0-6]\d|Z*)/'; |
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96 | preg_match_all($re, $day, $matches, PREG_SET_ORDER, 0); |
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97 | if (count($matches) != 1 && count($matches[0]) != 3) { |
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98 | throw new \InvalidArgumentException('Unable to extract day from input string'); |
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99 | } |
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100 | return new self(null, null, $matches[0][1], $matches[0][2]); |
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101 | } |
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102 | |||
103 | /** |
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104 | * @param string $monthDay |
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105 | * |
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106 | * @return \AlgoWeb\xsdTypes\AxillaryClasses\Calender |
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107 | */ |
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108 | View Code Duplication | public static function fromMonthDay($monthDay) |
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1 ignored issue
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show
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109 | { |
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110 | $re = '/--(1[0-2]|0[1-9]|[1-9])-(0[1-9]|1[0-9]|2[0-9]|3[0-1]|[1-9])([-+][0-1]\d:[0-6]\d|Z*)/'; |
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111 | preg_match_all($re, $monthDay, $matches, PREG_SET_ORDER, 0); |
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112 | if (count($matches) != 1 && count($matches[0]) != 4) { |
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113 | throw new \InvalidArgumentException('Unable to extract month day from input string'); |
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114 | } |
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115 | return new self(null, $matches[0][1], $matches[0][2], $matches[0][3]); |
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116 | } |
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117 | |||
118 | /** |
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119 | * @param string $month |
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120 | * |
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121 | * @return \AlgoWeb\xsdTypes\AxillaryClasses\Calender |
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122 | */ |
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123 | View Code Duplication | public static function fromMonth($month) |
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132 | |||
133 | /** |
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134 | * @param string $yearMonth |
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135 | * |
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136 | * @return \AlgoWeb\xsdTypes\AxillaryClasses\Calender |
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137 | */ |
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138 | View Code Duplication | public static function fromYearMonth($yearMonth) |
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147 | |||
148 | /** |
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149 | * @param string $year |
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150 | * |
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151 | * @return \AlgoWeb\xsdTypes\AxillaryClasses\Calender |
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152 | */ |
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153 | View Code Duplication | public static function fromYear($year) |
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162 | } |
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163 |