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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27 | class Loader |
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28 | { |
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29 | /** |
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30 | * Loader instance. |
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31 | * |
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32 | * @static |
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33 | * @var Loader |
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34 | */ |
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35 | private static $_instance; |
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36 | |||
37 | /** |
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38 | * Default gettext domain to use. |
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39 | * |
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40 | * @var string |
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41 | */ |
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42 | private $default_domain = ''; |
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43 | |||
44 | /** |
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45 | * Configured locale. |
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46 | * |
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47 | * @var string |
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48 | */ |
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49 | private $locale = ''; |
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50 | |||
51 | /** |
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52 | * Loaded domains. |
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53 | * |
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54 | * @var array |
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55 | */ |
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56 | private $domains = []; |
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57 | |||
58 | /** |
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59 | * Bound paths for domains. |
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60 | * |
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61 | * @var array |
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62 | */ |
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63 | private $paths = ['' => './']; |
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64 | |||
65 | /** |
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66 | * Returns the singleton Loader object. |
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67 | * |
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68 | * @return Loader object |
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69 | */ |
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70 | 5 | public static function getInstance() |
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78 | |||
79 | /** |
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80 | * Loads global localizaton functions. |
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81 | */ |
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82 | 2 | public static function loadFunctions() |
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86 | |||
87 | /** |
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88 | * Figure out all possible locale names and start with the most |
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89 | * specific ones. I.e. for sr_CS.UTF-8@latin, look through all of |
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90 | * sr_CS.UTF-8@latin, sr_CS@latin, sr@latin, sr_CS.UTF-8, sr_CS, sr. |
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91 | * |
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92 | * @param string $locale Locale code |
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93 | * |
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94 | * @return array list of locales to try for any POSIX-style locale specification |
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95 | */ |
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96 | 20 | public static function listLocales($locale) |
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149 | |||
150 | /** |
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151 | * Returns Translator object for domain or for default domain. |
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152 | * |
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153 | 10 | * @param string $domain Translation domain |
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154 | 6 | * |
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155 | * @return Translator |
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156 | */ |
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157 | 10 | public function getTranslator($domain = '') |
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191 | |||
192 | /** |
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193 | * Sets the path for a domain. |
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194 | 10 | * |
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195 | 10 | * @param string $domain Domain name |
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196 | * @param string $path Path where to find locales |
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197 | */ |
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198 | public function bindtextdomain($domain, $path) |
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202 | |||
203 | /** |
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204 | 10 | * Sets the default domain. |
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205 | 10 | * |
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206 | * @param string $domain Domain name |
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207 | */ |
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208 | public function textdomain($domain) |
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212 | |||
213 | /** |
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214 | * Sets a requested locale. |
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215 | * |
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216 | 10 | * @param string $locale Locale name |
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217 | 10 | * |
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218 | * @return string Set or current locale |
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219 | */ |
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220 | 10 | public function setlocale($locale) |
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228 | |||
229 | /** |
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230 | * Detects currently configured locale. |
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231 | * |
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232 | * It checks: |
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233 | * |
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234 | * - global lang variable |
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235 | 2 | * - environment for LC_ALL, LC_MESSAGES and LANG |
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236 | 1 | * |
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237 | 1 | * @return string with locale name |
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238 | 1 | */ |
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239 | 1 | public function detectlocale() |
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253 | } |
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254 |
In PHP, under loose comparison (like
==
, or!=
, orswitch
conditions), values of different types might be equal.For
string
values, the empty string''
is a special case, in particular the following results might be unexpected: