Complex classes like WordAds_Params often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use WordAds_Params, and based on these observations, apply Extract Interface, too.
1 | <?php |
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3 | class WordAds_Params { |
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4 | |||
5 | /** |
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6 | * Setup parameters for serving the ads |
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7 | * |
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8 | * @since 4.5.0 |
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9 | */ |
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10 | public function __construct() { |
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11 | // WordAds setting => default |
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12 | $settings = array( |
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13 | 'wordads_approved' => false, |
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14 | 'wordads_active' => false, |
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15 | 'wordads_house' => true, |
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16 | 'wordads_unsafe' => false, |
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17 | 'enable_header_ad' => true, |
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18 | 'wordads_second_belowpost' => true, |
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19 | 'wordads_display_front_page' => true, |
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20 | 'wordads_display_post' => true, |
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21 | 'wordads_display_page' => true, |
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22 | 'wordads_display_archive' => true, |
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23 | 'wordads_custom_adstxt' => '', |
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24 | ); |
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25 | |||
26 | // grab settings, or set as default if it doesn't exist |
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27 | $this->options = array(); |
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28 | foreach ( $settings as $setting => $default ) { |
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29 | $option = get_option( $setting, null ); |
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30 | |||
31 | if ( is_null( $option ) ) { |
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32 | update_option( $setting, $default, true ); |
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33 | $option = $default; |
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34 | } |
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35 | |||
36 | $this->options[ $setting ] = 'wordads_custom_adstxt' !== $setting ? (bool) $option : $option; |
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37 | } |
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38 | |||
39 | $host = 'localhost'; |
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40 | if ( isset( $_SERVER['HTTP_HOST'] ) ) { |
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41 | $host = $_SERVER['HTTP_HOST']; |
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42 | } |
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43 | |||
44 | $this->url = ( is_ssl() ? 'https' : 'http' ) . '://' . $host . $_SERVER['REQUEST_URI']; |
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45 | if ( ! ( false === strpos( $this->url, '?' ) ) && ! isset( $_GET['p'] ) ) { |
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46 | $this->url = substr( $this->url, 0, strpos( $this->url, '?' ) ); |
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47 | } |
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48 | |||
49 | $this->cloudflare = self::is_cloudflare(); |
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50 | $this->blog_id = Jetpack::get_option( 'id', 0 ); |
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51 | $this->mobile_device = jetpack_is_mobile( 'any', true ); |
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52 | $this->targeting_tags = array( |
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53 | 'WordAds' => 1, |
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54 | 'BlogId' => Jetpack::is_development_mode() ? 0 : Jetpack_Options::get_option( 'id' ), |
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55 | 'Domain' => esc_js( parse_url( home_url(), PHP_URL_HOST ) ), |
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56 | 'PageURL' => esc_js( $this->url ), |
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57 | 'LangId' => false !== strpos( get_bloginfo( 'language' ), 'en' ) ? 1 : 0, // TODO something else? |
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58 | 'AdSafe' => 1, // TODO |
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59 | ); |
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60 | } |
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61 | |||
62 | /** |
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63 | * @return boolean true if the user is browsing on a mobile device (iPad not included) |
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64 | * |
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65 | * @since 4.5.0 |
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66 | */ |
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67 | public function is_mobile() { |
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68 | return ! empty( $this->mobile_device ); |
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69 | } |
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70 | |||
71 | /** |
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72 | * @return boolean true if site is being served via CloudFlare |
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73 | * |
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74 | * @since 4.5.0 |
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75 | */ |
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76 | public static function is_cloudflare() { |
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77 | if ( |
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78 | defined( 'WORDADS_CLOUDFLARE' ) |
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79 | || isset( $_SERVER['HTTP_CF_CONNECTING_IP'] ) |
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80 | || isset( $_SERVER['HTTP_CF_IPCOUNTRY'] ) |
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81 | || isset( $_SERVER['HTTP_CF_VISITOR'] ) |
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82 | ) { |
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83 | return true; |
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84 | } |
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85 | |||
86 | return false; |
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87 | } |
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88 | |||
89 | /** |
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90 | * @return boolean true if user is browsing in iOS device |
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91 | * |
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92 | * @since 4.5.0 |
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93 | */ |
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94 | public function is_ios() { |
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95 | return in_array( $this->get_device(), array( 'ipad', 'iphone', 'ipod' ) ); |
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96 | } |
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97 | |||
98 | /** |
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99 | * Returns the user's device (see user-agent.php) or 'desktop' |
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100 | * |
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101 | * @return string user device |
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102 | * |
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103 | * @since 4.5.0 |
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104 | */ |
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105 | public function get_device() { |
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118 | |||
119 | /** |
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120 | * @return string The type of page that is being loaded |
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121 | * |
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122 | * @since 4.5.0 |
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123 | */ |
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124 | public function get_page_type() { |
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149 | |||
150 | /** |
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151 | * @return int The page type code for ipw config |
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152 | * |
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153 | * @since 5.6.0 |
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154 | */ |
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155 | public function get_page_type_ipw() { |
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178 | |||
179 | /** |
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180 | * Returns true if page is static home |
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181 | * |
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182 | * @return boolean true if page is static home |
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183 | * |
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184 | * @since 4.5.0 |
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185 | */ |
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186 | public static function is_static_home() { |
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191 | |||
192 | /** |
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193 | * Logic for if we should show an ad |
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194 | * |
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195 | * @since 4.5.0 |
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196 | */ |
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197 | public function should_show() { |
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226 | } |
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227 |
In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:
Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion: