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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24 | class MylinksUtility |
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25 | { |
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26 | /** |
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27 | * Sanitize input variables |
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28 | * @param string $global the input array ($_REQUEST, $_GET, $_POST) |
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29 | * @param unknown_type $key the array key for variable to clean |
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30 | * @param string|unknown_type $default the default value to use if filter fails |
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31 | * @param string $type the variable type (string, email, url, int) |
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32 | * @param array $limit 'min' 'max' keys - the lower/upper limit for integer values |
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33 | * @return Ambigous|number <boolean, unknown> |
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34 | */ |
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35 | public static function mylinks_cleanVars(&$global, $key, $default = '', $type = 'int', $limit = null) |
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65 | |||
66 | /** |
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67 | * |
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68 | * Temporary patch for errorHandler processing |
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69 | * @deprecated |
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70 | * @param string $msg message to display |
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71 | * @param int $pages number of pages to jump back for link |
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72 | * @param string $type error||info to add errorMsg CSS to display |
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73 | * @return null |
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74 | */ |
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75 | public static function show_message($msg, $pages = 1, $type = 'error') |
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96 | } |
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97 |
This check looks for
@param
annotations where the type inferred by our type inference engine differs from the declared type.It makes a suggestion as to what type it considers more descriptive.
Most often this is a case of a parameter that can be null in addition to its declared types.