yii2 source code study notes (10), yii2 source code study notes

Continue to learn about Application.

<span>  1</span>   <span>/*</span><span>*
</span><span>  2</span> <span>     * Registers the errorHandler component as a PHP error handler.
</span><span>  3</span> <span>     * 注冊errorHandler組件作為PHP錯誤處理函數(shù)
</span><span>  4</span> <span>     * @param array $config application config  應(yīng)用程序配置
</span><span>  5</span>      <span>*/</span>
<span>  6</span>     <span>protected</span> function registerErrorHandler(&<span>$config)
</span><span>  7</span> <span>    {
</span><span>  8</span>         <span>if</span> (YII_ENABLE_ERROR_HANDLER) {<span>//</span><span> YII_ENABLE_ERROR_HANDLER在BaseYii中被定義為true</span>
<span>  9</span>             <span>if</span> (!isset($config[<span>'</span><span>components</span><span>'</span>][<span>'</span><span>errorHandler</span><span>'</span>][<span>'</span><span>class</span><span>'</span><span>])) {
</span><span> 10</span>                 <span>//</span><span>$config['components']['errorHandler']['class']不存在結(jié)束運行    </span>
<span> 11</span>                 echo <span>"</span><span>Error: no errorHandler component is configured.\n</span><span>"</span><span>;
</span><span> 12</span>                 exit(<span>1</span><span>);
</span><span> 13</span> <span>            }
</span><span> 14</span>             <span>//</span><span>將$config['components']['errorHandler']的內(nèi)容設(shè)置到了$this->_definitions['errorHandler']中</span>
<span> 15</span>             $<span>this</span>-><span>set</span>(<span>'</span><span>errorHandler</span><span>'</span>, $config[<span>'</span><span>components</span><span>'</span>][<span>'</span><span>errorHandler</span><span>'</span><span>]);
</span><span> 16</span>             unset($config[<span>'</span><span>components</span><span>'</span>][<span>'</span><span>errorHandler</span><span>'</span>]);<span>//</span><span> 刪除掉配置內(nèi)容</span>
<span> 17</span>             $<span>this</span>->getErrorHandler()-><span>register();
</span><span> 18</span> <span>        }
</span><span> 19</span> <span>    }
</span><span> 20</span> 
<span> 21</span>     <span>/*</span><span>*
</span><span> 22</span> <span>     * Returns an ID that uniquely identifies this module among all modules within the current application.
</span><span> 23</span> <span>     * Since this is an application instance, it will always return an empty string.
</span><span> 24</span> <span>     * 返回在當(dāng)前應(yīng)用程序中該模塊的唯一標(biāo)識。這是一個應(yīng)用實例，它將返回一個空字符串。
</span><span> 25</span> <span>     * @return string the unique ID of the module.模塊的唯一標(biāo)識。
</span><span> 26</span>      <span>*/</span>
<span> 27</span>     <span>public</span><span> function getUniqueId()
</span><span> 28</span> <span>    {
</span><span> 29</span>         <span>return</span> <span>''</span><span>;
</span><span> 30</span> <span>    }
</span><span> 31</span> 
<span> 32</span>     <span>/*</span><span>*
</span><span> 33</span> <span>     * Sets the root directory of the application and the @app alias.設(shè)置應(yīng)用程序的根目錄 @ 加應(yīng)用程序別名。
</span><span> 34</span> <span>     * This method can only be invoked at the beginning of the constructor.只能在構(gòu)造函數(shù)開始時調(diào)用該方法
</span><span> 35</span> <span>     * @param string $path the root directory of the application.應(yīng)用程序的根目錄。
</span><span> 36</span> <span>     * @property string the root directory of the application. 應(yīng)用程序的根目錄。
</span><span> 37</span> <span>     * @throws InvalidParamException if the directory does not exist. 如果目錄不存在。拋出異常
</span><span> 38</span>      <span>*/</span>
<span> 39</span>     <span>public</span><span> function setBasePath($path)
</span><span> 40</span> <span>    {
</span><span> 41</span> <span>        parent::setBasePath($path);
</span><span> 42</span>         <span>//</span><span> 使用@app來記錄basePath</span>
<span> 43</span>         Yii::setAlias(<span>'</span><span>@app</span><span>'</span>, $<span>this</span>-><span>getBasePath());
</span><span> 44</span> <span>    }
</span><span> 45</span> 
<span> 46</span>     <span>/*</span><span>*
</span><span> 47</span> <span>     * Runs the application.    運行應(yīng)用程序。
</span><span> 48</span> <span>     * This is the main entrance of an application. 應(yīng)用程序的主要入口。
</span><span> 49</span> <span>     * @return integer the exit status (0 means normal, non-zero values mean abnormal) 狀態(tài)（0正常，非0為不正常）
</span><span> 50</span>      <span>*/</span>
<span> 51</span>     <span>public</span><span> function run()
</span><span> 52</span> <span>    {
</span><span> 53</span>         <span>try</span><span> {
</span><span> 54</span> 
<span> 55</span>             $<span>this</span>->state =<span> self::STATE_BEFORE_REQUEST; 
</span><span> 56</span>             $<span>this</span>->trigger(self::EVENT_BEFORE_REQUEST);<span>//</span><span>加載事件函數(shù)beforRequest函數(shù)</span>
<span> 57</span> 
<span> 58</span>             $<span>this</span>->state =<span> self::STATE_HANDLING_REQUEST;
</span><span> 59</span>             $response = $<span>this</span>->handleRequest($<span>this</span>->getRequest());<span>//</span><span>加載控制器  獲取Request對象</span>
<span> 60</span> 
<span> 61</span>             $<span>this</span>->state =<span> self::STATE_AFTER_REQUEST;
</span><span> 62</span>             $<span>this</span>->trigger(self::EVENT_AFTER_REQUEST);<span>//</span><span>加載afterRequest事件函數(shù)</span>
<span> 63</span> 
<span> 64</span>             $<span>this</span>->state =<span> self::STATE_SENDING_RESPONSE;
</span><span> 65</span>             $response->send();<span>//</span><span>將頁面內(nèi)容輸入緩沖，然后輸出</span>
<span> 66</span> 
<span> 67</span>             $<span>this</span>->state =<span> self::STATE_END;
</span><span> 68</span> 
<span> 69</span>             <span>return</span> $response-><span>exitStatus;
</span><span> 70</span> 
<span> 71</span>         } <span>catch</span><span> (ExitException $e) {
</span><span> 72</span>             
<span> 73</span>             $<span>this</span>->end($e->statusCode, isset($response) ? $response : <span>null</span><span>);
</span><span> 74</span>             <span>return</span> $e-><span>statusCode;
</span><span> 75</span> 
<span> 76</span> <span>        }
</span><span> 77</span> <span>    }
</span><span> 78</span> 
<span> 79</span>     <span>/*</span><span>*
</span><span> 80</span> <span>     * Handles the specified request.
</span><span> 81</span> <span>     *  處理指定的請求
</span><span> 82</span> <span>     * This method should return an instance of [[Response]] or its child class
</span><span> 83</span> <span>     * which represents the handling result of the request.
</span><span> 84</span> <span>     *  該方法應(yīng)該返回一個[[Response]]實例，或者它的子類代表處理請求的結(jié)果
</span><span> 85</span> <span>     * @param Request $request the request to be handled    被處理的請求
</span><span> 86</span> <span>     * @return Response the resulting response  得到的響應(yīng)
</span><span> 87</span>      <span>*/</span>
<span> 88</span>     <span>abstract</span> <span>public</span><span> function handleRequest($request);
</span><span> 89</span> 
<span> 90</span>     <span>private</span><span> $_runtimePath;
</span><span> 91</span> 
<span> 92</span>     <span>/*</span><span>*
</span><span> 93</span> <span>     * Returns the directory that stores runtime files.返回存儲運行時文件的路徑
</span><span> 94</span> <span>     * @return string the directory that stores runtime files.存儲運行時文件的目錄。
</span><span> 95</span> <span>     * Defaults to the "runtime" subdirectory under [[basePath]].默認(rèn)返回[[basePath]]下的 "runtime"目錄
</span><span> 96</span>      <span>*/</span>
<span> 97</span>     <span>public</span><span> function getRuntimePath()
</span><span> 98</span> <span>    {
</span><span> 99</span>         <span>if</span> ($<span>this</span>->_runtimePath === <span>null</span>) {<span>//</span><span>設(shè)置臨時文件存儲路徑</span>
<span>100</span>             $<span>this</span>->setRuntimePath($<span>this</span>->getBasePath() . DIRECTORY_SEPARATOR . <span>'</span><span>runtime</span><span>'</span><span>);
</span><span>101</span> <span>        }
</span><span>102</span> 
<span>103</span>         <span>return</span> $<span>this</span>-><span>_runtimePath;
</span><span>104</span> <span>    }
</span><span>105</span> 
<span>106</span>     <span>/*</span><span>*
</span><span>107</span> <span>     * Sets the directory that stores runtime files.設(shè)置存儲運行時文件的路徑
</span><span>108</span> <span>     * @param string $path the directory that stores runtime files.存儲運行時文件的目錄。
</span><span>109</span>      <span>*/</span>
<span>110</span>     <span>public</span><span> function setRuntimePath($path)
</span><span>111</span> <span>    {
</span><span>112</span>         <span>//</span><span> 獲取runtimePath的路徑，并存到_runtimePath中</span>
<span>113</span>         $<span>this</span>->_runtimePath =<span> Yii::getAlias($path);
</span><span>114</span>          <span>//</span><span> 使用@runtime來記錄 runtimePath</span>
<span>115</span>         Yii::setAlias(<span>'</span><span>@runtime</span><span>'</span>, $<span>this</span>-><span>_runtimePath);
</span><span>116</span> <span>    }
</span><span>117</span> 
<span>118</span>     <span>private</span><span> $_vendorPath;
</span><span>119</span> 
<span>120</span>     <span>/*</span><span>*
</span><span>121</span> <span>     * Returns the directory that stores vendor files.返回插件文件的目錄。
</span><span>122</span> <span>     * @return string the directory that stores vendor files.
</span><span>123</span> <span>     * Defaults to "vendor" directory under [[basePath]].
</span><span>124</span> <span>     * 默認(rèn)返回[[basePath]]下的 "vendor" 目錄
</span><span>125</span>      <span>*/</span>
<span>126</span>     <span>public</span><span> function getVendorPath()
</span><span>127</span> <span>    {
</span><span>128</span>         <span>if</span> ($<span>this</span>->_vendorPath === <span>null</span><span>) {
</span><span>129</span>             <span>//</span><span> 不存在，就將其設(shè)置為basePath/vendor</span>
<span>130</span>             $<span>this</span>->setVendorPath($<span>this</span>->getBasePath() . DIRECTORY_SEPARATOR . <span>'</span><span>vendor</span><span>'</span><span>);
</span><span>131</span> <span>        }
</span><span>132</span> 
<span>133</span>         <span>return</span> $<span>this</span>-><span>_vendorPath;
</span><span>134</span> <span>    }
</span><span>135</span> 
<span>136</span>     <span>/*</span><span>*
</span><span>137</span> <span>     * Sets the directory that stores vendor files.設(shè)置插件目錄路徑，并設(shè)置別名
</span><span>138</span> <span>     * @param string $path the directory that stores vendor files.
</span><span>139</span>      <span>*/</span>
<span>140</span>     <span>public</span><span> function setVendorPath($path)
</span><span>141</span> <span>    {
</span><span>142</span>         $<span>this</span>->_vendorPath = Yii::getAlias($path);<span>//</span><span> 獲取vendor的路徑，并存到_vendorPath中</span>
<span>143</span>         Yii::setAlias(<span>'</span><span>@vendor</span><span>'</span>, $<span>this</span>->_vendorPath);<span>//</span><span> 設(shè)置@vendor的alias</span>
<span>144</span>         Yii::setAlias(<span>'</span><span>@bower</span><span>'</span>, $<span>this</span>->_vendorPath . DIRECTORY_SEPARATOR . <span>'</span><span>bower</span><span>'</span><span>);
</span><span>145</span>         Yii::setAlias(<span>'</span><span>@npm</span><span>'</span>, $<span>this</span>->_vendorPath . DIRECTORY_SEPARATOR . <span>'</span><span>npm</span><span>'</span><span>);
</span><span>146</span> <span>    }
</span><span>147</span> 
<span>148</span>     <span>/*</span><span>*
</span><span>149</span> <span>     * Returns the time zone used by this application.取得時區(qū)
</span><span>150</span> <span>     * This is a simple wrapper of PHP function date_default_timezone_get().
</span><span>151</span> <span>     * If time zone is not configured in php.ini or application config,
</span><span>152</span> <span>     * it will be set to UTC by default.
</span><span>153</span> <span>     * @return string the time zone used by this application.
</span><span>154</span> <span>     * @see </span><span>http://php.net/manual/en/function.date-default-timezone-get.php</span>
<span>155</span>      <span>*/</span>
<span>156</span>     <span>public</span><span> function getTimeZone()
</span><span>157</span> <span>    {
</span><span>158</span>         <span>return</span><span> date_default_timezone_get();
</span><span>159</span> <span>    }
</span><span>160</span> 
<span>161</span>     <span>/*</span><span>*
</span><span>162</span> <span>     * Sets the time zone used by this application.設(shè)置時區(qū)
</span><span>163</span> <span>     * This is a simple wrapper of PHP function date_default_timezone_set().
</span><span>164</span> <span>     * Refer to the [php manual](</span><span>http://www.php.net/manual/en/timezones.php</span><span>) for available timezones.
</span><span>165</span> <span>     * @param string $value the time zone used by this application.
</span><span>166</span> <span>     * @see </span><span>http://php.net/manual/en/function.date-default-timezone-set.php</span>
<span>167</span>      <span>*/</span>
<span>168</span>     <span>public</span><span> function setTimeZone($value)
</span><span>169</span> <span>    {
</span><span>170</span> <span>        date_default_timezone_set($value);
</span><span>171</span> <span>    }
</span><span>172</span> 
<span>173</span>     <span>/*</span><span>*
</span><span>174</span> <span>     * Returns the database connection component.返回數(shù)據(jù)庫連接組件
</span><span>175</span> <span>     * @return \yii\db\Connection the database connection.
</span><span>176</span>      <span>*/</span>
<span>177</span>     <span>public</span><span> function getDb()
</span><span>178</span> <span>    {
</span><span>179</span>         <span>return</span> $<span>this</span>-><span>get</span>(<span>'</span><span>db</span><span>'</span><span>);
</span><span>180</span> <span>    }
</span><span>181</span> 
<span>182</span>     <span>/*</span><span>*
</span><span>183</span> <span>     * Returns the log dispatcher component.返回日志調(diào)度組件
</span><span>184</span> <span>     * @return \yii\log\Dispatcher the log dispatcher application component.
</span><span>185</span>      <span>*/</span>
<span>186</span>     <span>public</span><span> function getLog()
</span><span>187</span> <span>    {
</span><span>188</span>         <span>return</span> $<span>this</span>-><span>get</span>(<span>'</span><span>log</span><span>'</span><span>);
</span><span>189</span> <span>    }
</span><span>190</span> 
<span>191</span>     <span>/*</span><span>*
</span><span>192</span> <span>     * Returns the error handler component.返回錯誤處理組件
</span><span>193</span> <span>     * @return \yii\web\ErrorHandler|\yii\console\ErrorHandler the error handler application component.
</span><span>194</span>      <span>*/</span>
<span>195</span>     <span>public</span><span> function getErrorHandler()
</span><span>196</span> <span>    {
</span><span>197</span>         <span>return</span> $<span>this</span>-><span>get</span>(<span>'</span><span>errorHandler</span><span>'</span><span>);
</span><span>198</span> <span>    }
</span><span>199</span> 
<span>200</span>     <span>/*</span><span>*
</span><span>201</span> <span>     * Returns the cache component.返回緩存組件
</span><span>202</span> <span>     * @return \yii\caching\Cache the cache application component. Null if the component is not enabled.
</span><span>203</span>      <span>*/</span>
<span>204</span>     <span>public</span><span> function getCache()
</span><span>205</span> <span>    {
</span><span>206</span>         <span>return</span> $<span>this</span>-><span>get</span>(<span>'</span><span>cache</span><span>'</span>, <span>false</span><span>);
</span><span>207</span> <span>    }
</span><span>208</span> 
<span>209</span>     <span>/*</span><span>*
</span><span>210</span> <span>     * Returns the formatter component.返回格式化程序組件
</span><span>211</span> <span>     * @return \yii\i18n\Formatter the formatter application component.
</span><span>212</span>      <span>*/</span>
<span>213</span>     <span>public</span><span> function getFormatter()
</span><span>214</span> <span>    {
</span><span>215</span>         <span>return</span> $<span>this</span>-><span>get</span>(<span>'</span><span>formatter</span><span>'</span><span>);
</span><span>216</span> <span>    }
</span><span>217</span> 
<span>218</span>     <span>/*</span><span>*
</span><span>219</span> <span>     * Returns the request component.返回請求的組件對象
</span><span>220</span> <span>     * @return \yii\web\Request|\yii\console\Request the request component.
</span><span>221</span>      <span>*/</span>
<span>222</span>     <span>public</span><span> function getRequest()
</span><span>223</span> <span>    {
</span><span>224</span>         <span>return</span> $<span>this</span>-><span>get</span>(<span>'</span><span>request</span><span>'</span><span>);
</span><span>225</span> <span>    }
</span><span>226</span> 
<span>227</span>     <span>/*</span><span>*
</span><span>228</span> <span>     * Returns the response component.返回響應(yīng)組件
</span><span>229</span> <span>     * @return \yii\web\Response|\yii\console\Response the response component.
</span><span>230</span>      <span>*/</span>
<span>231</span>     <span>public</span><span> function getResponse()
</span><span>232</span> <span>    {
</span><span>233</span>         <span>return</span> $<span>this</span>-><span>get</span>(<span>'</span><span>response</span><span>'</span><span>);
</span><span>234</span> <span>    }
</span><span>235</span> 
<span>236</span>     <span>/*</span><span>*
</span><span>237</span> <span>     * Returns the view object.返回視圖對象
</span><span>238</span> <span>     * @return View|\yii\web\View the view application component that is used to render various view files.
</span><span>239</span>      <span>*/</span>
<span>240</span>     <span>public</span><span> function getView()
</span><span>241</span> <span>    {
</span><span>242</span>         <span>return</span> $<span>this</span>-><span>get</span>(<span>'</span><span>view</span><span>'</span><span>);
</span><span>243</span> <span>    }
</span><span>244</span> 
<span>245</span>     <span>/*</span><span>*
</span><span>246</span> <span>     * Returns the URL manager for this application.返回當(dāng)前應(yīng)用的URL管理組件
</span><span>247</span> <span>     * @return \yii\web\UrlManager the URL manager for this application.
</span><span>248</span>      <span>*/</span>
<span>249</span>     <span>public</span><span> function getUrlManager()
</span><span>250</span> <span>    {
</span><span>251</span>         <span>return</span> $<span>this</span>-><span>get</span>(<span>'</span><span>urlManager</span><span>'</span><span>);
</span><span>252</span> <span>    }
</span><span>253</span> 
<span>254</span>     <span>/*</span><span>*
</span><span>255</span> <span>     * Returns the internationalization (i18n) component返回國際化組件
</span><span>256</span> <span>     * @return \yii\i18n\I18N the internationalization application component.
</span><span>257</span>      <span>*/</span>
<span>258</span>     <span>public</span><span> function getI18n()
</span><span>259</span> <span>    {
</span><span>260</span>         <span>return</span> $<span>this</span>-><span>get</span>(<span>'</span><span>i18n</span><span>'</span><span>);
</span><span>261</span> <span>    }
</span><span>262</span> 
<span>263</span>     <span>/*</span><span>*
</span><span>264</span> <span>     * Returns the mailer component.返回郵件組件
</span><span>265</span> <span>     * @return \yii\mail\MailerInterface the mailer application component.
</span><span>266</span>      <span>*/</span>
<span>267</span>     <span>public</span><span> function getMailer()
</span><span>268</span> <span>    {
</span><span>269</span>         <span>return</span> $<span>this</span>-><span>get</span>(<span>'</span><span>mailer</span><span>'</span><span>);
</span><span>270</span> <span>    }
</span><span>271</span> 
<span>272</span>     <span>/*</span><span>*
</span><span>273</span> <span>     * Returns the auth manager for this application.返回該應(yīng)用的權(quán)限管理組件
</span><span>274</span> <span>     * @return \yii\rbac\ManagerInterface the auth manager application component.
</span><span>275</span> <span>     * Null is returned if auth manager is not configured.   管理權(quán)限沒有配置返回null
</span><span>276</span>      <span>*/</span>
<span>277</span>     <span>public</span><span> function getAuthManager()
</span><span>278</span> <span>    {
</span><span>279</span>         <span>return</span> $<span>this</span>-><span>get</span>(<span>'</span><span>authManager</span><span>'</span>, <span>false</span><span>);
</span><span>280</span> <span>    }
</span><span>281</span> 
<span>282</span>     <span>/*</span><span>*
</span><span>283</span> <span>     * Returns the asset manager.返回資源管理組件
</span><span>284</span> <span>     * @return \yii\web\AssetManager the asset manager application component.
</span><span>285</span>      <span>*/</span>
<span>286</span>     <span>public</span><span> function getAssetManager()
</span><span>287</span> <span>    {
</span><span>288</span>         <span>return</span> $<span>this</span>-><span>get</span>(<span>'</span><span>assetManager</span><span>'</span><span>);
</span><span>289</span> <span>    }
</span><span>290</span> 
<span>291</span>     <span>/*</span><span>*
</span><span>292</span> <span>     * Returns the security component.返回安全組件
</span><span>293</span> <span>     * @return \yii\base\Security the security application component.
</span><span>294</span>      <span>*/</span>
<span>295</span>     <span>public</span><span> function getSecurity()
</span><span>296</span> <span>    {
</span><span>297</span>         <span>return</span> $<span>this</span>-><span>get</span>(<span>'</span><span>security</span><span>'</span><span>);
</span><span>298</span> <span>    }
</span><span>299</span> 
<span>300</span>     <span>/*</span><span>*
</span><span>301</span> <span>     * Returns the configuration of core application components.返回核心組件的配置
</span><span>302</span> <span>     * @see set()
</span><span>303</span>      <span>*/</span>
<span>304</span>     <span>public</span><span> function coreComponents()
</span><span>305</span> <span>    {
</span><span>306</span>         <span>return</span><span> [
</span><span>307</span>             <span>'</span><span>log</span><span>'</span> => [<span>'</span><span>class</span><span>'</span> => <span>'</span><span>yii\log\Dispatcher</span><span>'</span><span>],
</span><span>308</span>             <span>'</span><span>view</span><span>'</span> => [<span>'</span><span>class</span><span>'</span> => <span>'</span><span>yii\web\View</span><span>'</span><span>],
</span><span>309</span>             <span>'</span><span>formatter</span><span>'</span> => [<span>'</span><span>class</span><span>'</span> => <span>'</span><span>yii\i18n\Formatter</span><span>'</span><span>],
</span><span>310</span>             <span>'</span><span>i18n</span><span>'</span> => [<span>'</span><span>class</span><span>'</span> => <span>'</span><span>yii\i18n\I18N</span><span>'</span><span>],
</span><span>311</span>             <span>'</span><span>mailer</span><span>'</span> => [<span>'</span><span>class</span><span>'</span> => <span>'</span><span>yii\swiftmailer\Mailer</span><span>'</span><span>],
</span><span>312</span>             <span>'</span><span>urlManager</span><span>'</span> => [<span>'</span><span>class</span><span>'</span> => <span>'</span><span>yii\web\UrlManager</span><span>'</span><span>],
</span><span>313</span>             <span>'</span><span>assetManager</span><span>'</span> => [<span>'</span><span>class</span><span>'</span> => <span>'</span><span>yii\web\AssetManager</span><span>'</span><span>],
</span><span>314</span>             <span>'</span><span>security</span><span>'</span> => [<span>'</span><span>class</span><span>'</span> => <span>'</span><span>yii\base\Security</span><span>'</span><span>],
</span><span>315</span> <span>        ];
</span><span>316</span> <span>    }
</span><span>317</span> 
<span>318</span>     <span>/*</span><span>*
</span><span>319</span> <span>     * Terminates the application.終止應(yīng)用程序
</span><span>320</span> <span>     * This method replaces the `exit()` function by ensuring the application life cycle is completed
</span><span>321</span> <span>     * before terminating the application.該方法代替`exit()`  確認(rèn)一個應(yīng)用的生命周期已經(jīng)結(jié)束
</span><span>322</span> <span>     * @param integer $status the exit status (value 0 means normal exit while other values mean abnormal exit).
</span><span>323</span> <span>     * @param Response $response the response to be sent. If not set, the default application [[response]] component will be used.
</span><span>324</span> <span>     * @throws ExitException if the application is in testing mode
</span><span>325</span>      <span>*/</span>
<span>326</span>     <span>public</span> function end($status = <span>0</span>, $response = <span>null</span><span>)
</span><span>327</span> <span>    {
</span><span>328</span>         <span>if</span> ($<span>this</span>->state === self::STATE_BEFORE_REQUEST || $<span>this</span>->state ===<span> self::STATE_HANDLING_REQUEST) {
</span><span>329</span>             <span>//</span><span>判斷當(dāng)前狀態(tài)為請求前或者處理請求</span>
<span>330</span>             $<span>this</span>->state = self::STATE_AFTER_REQUEST;<span>//</span><span>設(shè)置應(yīng)用狀態(tài)為請求完成后</span>
<span>331</span>             $<span>this</span>-><span>trigger(self::EVENT_AFTER_REQUEST);
</span><span>332</span> <span>        }
</span><span>333</span> 
<span>334</span>         <span>if</span> ($<span>this</span>->state !== self::STATE_SENDING_RESPONSE && $<span>this</span>->state !==<span> self::STATE_END) {
</span><span>335</span>             <span>//</span><span>如果應(yīng)用狀態(tài)不是發(fā)送應(yīng)答和應(yīng)用結(jié)束</span>
<span>336</span>             $<span>this</span>->state = self::STATE_END;<span>//</span><span>設(shè)置狀態(tài)為應(yīng)用結(jié)束</span>
<span>337</span>             $response = $response ? : $<span>this</span>-><span>getResponse();
</span><span>338</span>             $response->send();<span>//</span><span>向客戶端發(fā)送應(yīng)答</span>
<span>339</span> <span>        }
</span><span>340</span> 
<span>341</span>         <span>if</span><span> (YII_ENV_TEST) {
</span><span>342</span>             <span>throw</span> <span>new</span><span> ExitException($status);
</span><span>343</span>         } <span>else</span><span> {
</span><span>344</span> <span>            exit($status);
</span><span>345</span> <span>        }
</span><span>346</span>     }

php