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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15 | class ExperimentVariationReach |
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16 | { |
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17 | /** |
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18 | * Baseline count |
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19 | * @var integer |
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20 | */ |
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21 | private $baselineCount; |
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22 | |||
23 | /** |
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24 | * Baseline reach |
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25 | * @var number |
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26 | */ |
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27 | private $baselineReach; |
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28 | |||
29 | /** |
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30 | * Total number of visitors exposed to the experiment |
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31 | * @var integer |
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32 | */ |
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33 | private $totalCount; |
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34 | |||
35 | /** |
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36 | * Treatment count |
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37 | * @var number |
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38 | */ |
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39 | private $treatmentCount; |
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40 | |||
41 | /** |
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42 | * Treatment reach |
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43 | * @var number |
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44 | */ |
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45 | private $treatmentReach; |
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46 | |||
47 | /** |
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48 | * A map of reach for each Variation keyed by Variation ID |
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49 | * @var array[VariationReach] |
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50 | */ |
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51 | private $variations; |
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52 | |||
53 | /** |
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54 | * Constructor. |
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55 | */ |
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56 | 3 | public function __construct($options = array()) |
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57 | { |
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58 | 3 | foreach ($options as $name=>$value) { |
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59 | switch ($name) { |
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60 | 3 | case 'baseline_count': $this->setBaselineCount($value); break; |
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61 | 3 | case 'baseline_reach': $this->setBaselineReach($value); break; |
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62 | 3 | case 'total_count': $this->setTotalCount($value); break; |
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63 | 3 | case 'treatment_count': $this->setTreatmentCount($value); break; |
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64 | 3 | case 'treatment_reach': $this->setTreatmentReach($value); break; |
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65 | 3 | View Code Duplication | case 'variations': { |
66 | 3 | $variations = array(); |
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67 | 3 | foreach ($value as $name=>$variationInfo) { |
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68 | 3 | $variations[$name] = new VariationReach($variationInfo); |
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69 | } |
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70 | 3 | $this->setVariations($variations); |
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71 | 3 | break; |
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72 | } |
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73 | default: |
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74 | 3 | throw new Exception('Unknown option: ' . $name); |
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75 | } |
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76 | } |
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77 | 3 | } |
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78 | |||
79 | /** |
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80 | * Returns this object as array. |
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81 | */ |
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82 | 1 | public function toArray() |
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83 | { |
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84 | $options = array( |
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85 | 1 | 'baseline_count' => $this->getBaselineCount(), |
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86 | 1 | 'baseline_reach' => $this->getBaselineReach(), |
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87 | 1 | 'total_count' => $this->getTotalCount(), |
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88 | 1 | 'treatment_count' => $this->getTreatmentCount(), |
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89 | 1 | 'treatment_reach' => $this->getTreatmentReach(), |
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90 | 'variations' => array(), |
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91 | ); |
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92 | |||
93 | 1 | foreach ($this->getVariations() as $name=>$variation) { |
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94 | 1 | $options['variations'][$name] = $variation->toArray(); |
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95 | } |
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96 | |||
97 | // Remove options with empty values |
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98 | 1 | $cleanedOptions = array(); |
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99 | 1 | foreach ($options as $name=>$value) { |
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100 | 1 | if ($value!==null) |
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101 | 1 | $cleanedOptions[$name] = $value; |
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102 | } |
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103 | |||
104 | 1 | return $cleanedOptions; |
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105 | } |
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106 | |||
107 | 1 | public function getBaselineCount() |
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111 | |||
112 | 3 | public function setBaselineCount($baselineCount) |
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116 | |||
117 | 1 | public function getBaselineReach() |
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121 | |||
122 | 3 | public function setBaselineReach($baselineReach) |
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126 | |||
127 | 1 | public function getTotalCount() |
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131 | |||
132 | 3 | public function setTotalCount($totalCount) |
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136 | |||
137 | 1 | public function getTreatmentCount() |
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141 | |||
142 | 3 | public function setTreatmentCount($treatmentCount) |
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146 | |||
147 | 1 | public function getTreatmentReach() |
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151 | |||
152 | 3 | public function setTreatmentReach($treatmentReach) |
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156 | |||
157 | 1 | public function getVariations() |
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161 | |||
162 | 3 | public function setVariations($variations) |
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166 | } |
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167 | |||
168 | |||
178 |
According to the PSR-2, the body of a case statement must start on the line immediately following the case statement.
}
To learn more about the PSR-2 coding standard, please refer to the PHP-Fig.