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yii源码分析1，yii源码分析
yii
yii源码分析1，yii源码分析
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本文将对yii中的mvc,路由器，filter,组件机制等最主要的部分进行自己的一点浅析，力求说明自己做一个php mvc不是那么的遥不可及，其实是很简单的。
源码基于yii 1.13,为了方便说明，我对其进行了大量的裁剪，不过还是让他保有上面的那些最重要的功能。裁剪下来，其实没有几个文件了，而且每个文件代码最多100多行，避免因为代码太多而懒得看。
所谓的mvc都是让所有请求从一个地方进去，通过对请求，配置的解析，分发到对应的类方法中。
首先当然是入口文件，index.php.
<span>1</span> <?<span>php </span><span>2</span> <span>$app</span> = "app"<span>; </span><span>3</span> <span>$yii</span> = <span>dirname</span> ( <span>__FILE__</span> ) . '/framework/yii.php'<span>; </span><span>4</span> <span>$config</span> = <span>dirname</span> ( <span>__FILE__</span> ) . '/app/protected/config/main.php';<span>//</span><span>载入配置</span> <span>5</span> <span>require_once</span> (<span>$yii</span><span>); </span><span>6</span> Yii::createWebApplication ( <span>$config</span> )->run ();
Copier après la connexion
引入yii.php
<span>1</span> <?<span>php
</span><span>2</span> <span>define</span> ( "VIEWS_DIR", "<span>$app</span>/protected/views/"<span> );
</span><span>3</span> <span>define</span> ( "CONTROLLERS_DIR", "<span>$app</span>/protected/controllers/"<span> );
</span><span>4</span> <span>require</span>(<span>dirname</span>(<span>__FILE__</span>).'/YiiBase.php'<span>);
</span><span>5</span> <span>class</span> Yii <span>extends</span><span> YiiBase
</span><span>6</span> <span>{
</span><span>7</span> }Copier après la connexion
原来yii是个空的类啊，去看YiiBase.
<span> 1</span> <?<span>php
</span><span> 2</span> <span>defined</span> ( 'YII_PATH' ) or <span>define</span> ( 'YII_PATH', <span>dirname</span> ( <span>__FILE__</span><span> ) );
</span><span> 3</span> <span>class</span><span> YiiBase {
</span><span> 4</span> <span>public</span> <span>static</span> <span>$classMap</span> = <span>array</span><span> ();
</span><span> 5</span> <span>public</span> <span>static</span> <span>$enableIncludePath</span> = <span>true</span><span>;
</span><span> 6</span> <span>private</span> <span>static</span> <span>$_aliases</span> = <span>array</span><span> (
</span><span> 7</span> 'system' =><span> YII_PATH
</span><span> 8</span> ); <span>//</span><span> alias => path</span>
<span> 9</span> <span>private</span> <span>static</span> <span>$_imports</span> = <span>array</span> (); <span>//</span><span> alias => class name or directory</span>
<span> 10</span> <span>private</span> <span>static</span> <span>$_includePaths</span>; <span>//</span><span> list of include paths</span>
<span> 11</span> <span>private</span> <span>static</span> <span>$_app</span><span>;
</span><span> 12</span> <span>private</span> <span>static</span> <span>$_logger</span><span>;
</span><span> 13</span> <span>public</span> <span>static</span> <span>function</span> createWebApplication(<span>$config</span> = <span>null</span><span>) {
</span><span> 14</span> <span>return</span> self::createApplication ( 'CWebApplication', <span>$config</span><span> );
</span><span> 15</span> <span> }
</span><span> 16</span> <span>public</span> <span>static</span> <span>function</span> createApplication(<span>$class</span>, <span>$config</span> = <span>null</span><span>) {
</span><span> 17</span> <span>return</span> <span>new</span> <span>$class</span> ( <span>$config</span><span> );
</span><span> 18</span> <span> }
</span><span> 19</span> <span>public</span> <span>static</span> <span>function</span><span> app() {
</span><span> 20</span> <span>return</span> self::<span>$_app</span><span>;
</span><span> 21</span> <span> }
</span><span> 22</span> <span>//</span><span>别名路径</span>
<span> 23</span> <span>public</span> <span>static</span> <span>function</span> getPathOfAlias(<span>$alias</span><span>) {
</span><span> 24</span> <span>if</span> (<span>isset</span> ( self::<span>$_aliases</span> [<span>$alias</span><span>] ))
</span><span> 25</span> <span>return</span> self::<span>$_aliases</span> [<span>$alias</span><span>];
</span><span> 26</span> <span>elseif</span> ((<span>$pos</span> = <span>strpos</span> ( <span>$alias</span>, '.' )) !== <span>false</span><span>) {
</span><span> 27</span> <span>$rootAlias</span> = <span>substr</span> ( <span>$alias</span>, 0, <span>$pos</span><span> );
</span><span> 28</span> <span>if</span> (<span>isset</span> ( self::<span>$_aliases</span> [<span>$rootAlias</span><span>] ))
</span><span> 29</span> <span>return</span> self::<span>$_aliases</span> [<span>$alias</span>] = <span>rtrim</span> ( self::<span>$_aliases</span> [<span>$rootAlias</span>] . DIRECTORY_SEPARATOR . <span>str_replace</span> ( '.', DIRECTORY_SEPARATOR, <span>substr</span> ( <span>$alias</span>, <span>$pos</span> + 1 ) ), '*' .<span> DIRECTORY_SEPARATOR );
</span><span> 30</span> <span> }
</span><span> 31</span> <span>return</span> <span>false</span><span>;
</span><span> 32</span> <span> }
</span><span> 33</span> <span>public</span> <span>static</span> <span>function</span> setPathOfAlias(<span>$alias</span>, <span>$path</span><span>) {
</span><span> 34</span> <span>if</span> (<span>empty</span> ( <span>$path</span><span> ))
</span><span> 35</span> <span>unset</span> ( self::<span>$_aliases</span> [<span>$alias</span><span>] );
</span><span> 36</span> <span>else</span>
<span> 37</span> self::<span>$_aliases</span> [<span>$alias</span>] = <span>rtrim</span> ( <span>$path</span>, '\\/'<span> );
</span><span> 38</span> <span> }
</span><span> 39</span> <span>public</span> <span>static</span> <span>function</span> setApplication(<span>$app</span><span>) {
</span><span> 40</span> <span>if</span> (self::<span>$_app</span> === <span>null</span> || <span>$app</span> === <span>null</span><span>)
</span><span> 41</span> self::<span>$_app</span> = <span>$app</span><span>;
</span><span> 42</span> <span> }
</span><span> 43</span> <span>public</span> <span>static</span> <span>function</span> import(<span>$alias</span>, <span>$forceInclude</span> = <span>false</span><span>) {
</span><span> 44</span> <span>if</span> (<span>isset</span> ( self::<span>$_imports</span> [<span>$alias</span>] )) <span>//</span><span> previously imported</span>
<span> 45</span> <span>return</span> self::<span>$_imports</span> [<span>$alias</span><span>];
</span><span> 46</span>
<span> 47</span> <span>if</span> (<span>class_exists</span> ( <span>$alias</span>, <span>false</span> ) || <span>interface_exists</span> ( <span>$alias</span>, <span>false</span><span> ))
</span><span> 48</span> <span>return</span> self::<span>$_imports</span> [<span>$alias</span>] = <span>$alias</span><span>;
</span><span> 49</span> <span>if</span> ((<span>$pos</span> = <span>strrpos</span> ( <span>$alias</span>, '.' )) === <span>false</span>) <span>//</span><span> a simple class name</span>
<span> 50</span> <span> {
</span><span> 51</span> <span>//</span><span> try to autoload the class with an autoloader if $forceInclude is true</span>
<span> 52</span> <span>if</span> (<span>$forceInclude</span> && (Yii::autoload ( <span>$alias</span>, <span>true</span> ) || <span>class_exists</span> ( <span>$alias</span>, <span>true</span><span> )))
</span><span> 53</span> self::<span>$_imports</span> [<span>$alias</span>] = <span>$alias</span><span>;
</span><span> 54</span> <span>return</span> <span>$alias</span><span>;
</span><span> 55</span> <span> }
</span><span> 56</span>
<span> 57</span> <span>$className</span> = ( <span>string</span> ) <span>substr</span> ( <span>$alias</span>, <span>$pos</span> + 1<span> );
</span><span> 58</span> <span>$isClass</span> = <span>$className</span> !== '*'<span>;
</span><span> 59</span>
<span> 60</span> <span>if</span> (<span>$isClass</span> && (<span>class_exists</span> ( <span>$className</span>, <span>false</span> ) || <span>interface_exists</span> ( <span>$className</span>, <span>false</span><span> )))
</span><span> 61</span> <span>return</span> self::<span>$_imports</span> [<span>$alias</span>] = <span>$className</span><span>;
</span><span> 62</span>
<span> 63</span> <span>if</span> ((<span>$path</span> = self::getPathOfAlias ( <span>$alias</span> )) !== <span>false</span><span>) {
</span><span> 64</span> <span>if</span> (<span>$isClass</span><span>) {
</span><span> 65</span> <span>if</span> (<span>$forceInclude</span><span>) {
</span><span> 66</span> <span>if</span> (<span>is_file</span> ( <span>$path</span> . '.php'<span> ))
</span><span> 67</span> <span>require</span> (<span>$path</span> . '.php'<span>);
</span><span> 68</span> <span>else</span>
<span> 69</span> <span>throw</span> <span>new</span> CException ( Yii::t ( 'yii', 'Alias "{alias}" is invalid. Make sure it points to an existing PHP file and the file is readable.', <span>array</span><span> (
</span><span> 70</span> '{alias}' => <span>$alias</span>
<span> 71</span> <span> ) ) );
</span><span> 72</span> self::<span>$_imports</span> [<span>$alias</span>] = <span>$className</span><span>;
</span><span> 73</span> } <span>else</span>
<span> 74</span> self::<span>$classMap</span> [<span>$className</span>] = <span>$path</span> . '.php'<span>;
</span><span> 75</span> <span>return</span> <span>$className</span><span>;
</span><span> 76</span> } <span>else</span> <span>//</span><span> a directory</span>
<span> 77</span> <span> {
</span><span> 78</span> <span>if</span> (self::<span>$_includePaths</span> === <span>null</span><span>) {
</span><span> 79</span> self::<span>$_includePaths</span> = <span>array_unique</span> ( <span>explode</span> ( PATH_SEPARATOR, <span>get_include_path</span><span> () ) );
</span><span> 80</span> <span>if</span> ((<span>$pos</span> = <span>array_search</span> ( '.', self::<span>$_includePaths</span>, <span>true</span> )) !== <span>false</span><span>)
</span><span> 81</span> <span>unset</span> ( self::<span>$_includePaths</span> [<span>$pos</span><span>] );
</span><span> 82</span> <span> }
</span><span> 83</span>
<span> 84</span> <span>array_unshift</span> ( self::<span>$_includePaths</span>, <span>$path</span><span> );
</span><span> 85</span>
<span> 86</span> <span>if</span> (self::<span>$enableIncludePath</span> && <span>set_include_path</span> ( '.' . PATH_SEPARATOR . <span>implode</span> ( PATH_SEPARATOR, self::<span>$_includePaths</span> ) ) === <span>false</span><span>)
</span><span> 87</span> self::<span>$enableIncludePath</span> = <span>false</span><span>;
</span><span> 88</span>
<span> 89</span> <span>return</span> self::<span>$_imports</span> [<span>$alias</span>] = <span>$path</span><span>;
</span><span> 90</span> <span> }
</span><span> 91</span> <span> }
</span><span> 92</span> <span> }
</span><span> 93</span> <span>//</span><span>创建组件实例</span>
<span> 94</span> <span>public</span> <span>static</span> <span>function</span> createComponent(<span>$config</span><span>) {
</span><span> 95</span> <span>if</span> (<span>is_string</span> ( <span>$config</span><span> )) {
</span><span> 96</span> <span>$type</span> = <span>$config</span><span>;
</span><span> 97</span> <span>$config</span> = <span>array</span><span> ();
</span><span> 98</span> } <span>elseif</span> (<span>isset</span> ( <span>$config</span> ['class'<span>] )) {
</span><span> 99</span> <span>$type</span> = <span>$config</span> ['class'<span>];
</span><span>100</span> <span>unset</span> ( <span>$config</span> ['class'<span>] );
</span><span>101</span> <span> }
</span><span>102</span> <span>if</span> (! <span>class_exists</span> ( <span>$type</span>, <span>false</span><span> )) {
</span><span>103</span> <span>$type</span> = Yii::import ( <span>$type</span>, <span>true</span><span> );
</span><span>104</span> <span> }
</span><span>105</span> <span>if</span> ((<span>$n</span> = <span>func_num_args</span> ()) > 1<span>) {
</span><span>106</span> <span>$args</span> = <span>func_get_args</span><span> ();
</span><span>107</span> <span>if</span> (<span>$n</span> === 2<span>)
</span><span>108</span> <span>$object</span> = <span>new</span> <span>$type</span> ( <span>$args</span> [1<span>] );
</span><span>109</span> <span>elseif</span> (<span>$n</span> === 3<span>)
</span><span>110</span> <span>$object</span> = <span>new</span> <span>$type</span> ( <span>$args</span> [1], <span>$args</span> [2<span>] );
</span><span>111</span> <span>elseif</span> (<span>$n</span> === 4<span>)
</span><span>112</span> <span>$object</span> = <span>new</span> <span>$type</span> ( <span>$args</span> [1], <span>$args</span> [2], <span>$args</span> [3<span>] );
</span><span>113</span> <span>else</span><span> {
</span><span>114</span> <span>unset</span> ( <span>$args</span> [0<span>] );
</span><span>115</span> <span>$class</span> = <span>new</span> ReflectionClass ( <span>$type</span><span> );
</span><span>116</span> <span>//</span><span> Note: ReflectionClass::newInstanceArgs() is available for PHP 5.1.3+
</span><span>117</span> <span> // $object=$class->newInstanceArgs($args);</span>
<span>118</span> <span>$object</span> = <span>call_user_func_array</span> ( <span>array</span><span> (
</span><span>119</span> <span>$class</span>,
<span>120</span> 'newInstance'
<span>121</span> ), <span>$args</span><span> );
</span><span>122</span> <span> }
</span><span>123</span> } <span>else</span>
<span>124</span> <span>$object</span> = <span>new</span> <span>$type</span><span> ();
</span><span>125</span> <span>foreach</span> ( <span>$config</span> <span>as</span> <span>$key</span> => <span>$value</span><span> )
</span><span>126</span> <span>$object</span>-><span>$key</span> = <span>$value</span><span>;
</span><span>127</span>
<span>128</span> <span>return</span> <span>$object</span><span>;
</span><span>129</span> <span> }
</span><span>130</span> <span>//</span><span>按需加载相应的php</span>
<span>131</span> <span>public</span> <span>static</span> <span>function</span> autoload(<span>$className</span><span>) {
</span><span>132</span> <span>include</span> self::<span>$_coreClasses</span> [<span>$className</span><span>];
</span><span>133</span> <span> }
</span><span>134</span> <span>private</span> <span>static</span> <span>$_coreClasses</span> = <span>array</span><span> (
</span><span>135</span> 'CApplication' => '/base/CApplication.php',
<span>136</span> 'CModule' => '/base/CModule.php',
<span>137</span> 'CWebApplication' => '/base/CWebApplication.php',
<span>138</span> 'CUrlManager' => 'CUrlManager.php',
<span>139</span> 'CComponent' => '/base/CComponent.php'
<span>140</span> , 'CUrlRule' => 'CUrlRule.php',
<span>141</span> 'CController' => 'CController.php',
<span>142</span> 'CInlineAction' => '/actions/CInlineAction.php',
<span>143</span> 'CAction' => '/actions/CAction.php',
<span>144</span> 'CFilterChain' => '/filters/CFilterChain.php',
<span>145</span> 'CFilter' => '/filters/CFilter.php',
<span>146</span> 'CList' => '/collections/CList.php',
<span>147</span> 'CHttpRequest' => 'CHttpRequest.php',
<span>148</span> 'CDb' => 'CDb.php',
<span>149</span> 'CInlineFilter' => 'filters/CInlineFilter.php'
<span>150</span> <span> );
</span><span>151</span> <span>}
</span><span>152</span>
<span>153</span> spl_autoload_register ( <span>array</span><span> (
</span><span>154</span> 'YiiBase',
<span>155</span> 'autoload'
<span>156</span> ) );Copier après la connexion
看似很多，其实就三个地方注意下就可以了
1.spl_autoload_register,用这个就可以实现传说中的按需加载相应的php了,坑爹啊。
2.createComponent($config)这个方法是yii组件调用的核心。在配置中注册的所有组件都是通过它获取组件类的实例的。比如配置：
<span> 1</span> <?<span>php </span><span> 2</span> <span>return</span> <span>array</span><span> ( </span><span> 3</span> 'basePath' => <span>dirname</span> ( <span>__FILE__</span> ) . DIRECTORY_SEPARATOR . '..', <span> 4</span> <span> 5</span> 'import' => <span>array</span><span> ( </span><span> 6</span> 'application.util.*' <span> 7</span> ), <span> 8</span> <span> 9</span> 'components' => <span>array</span><span> ( </span><span>10</span> 'db' => <span>array</span><span> ( </span><span>11</span> 'class' => 'CDb', <span>12</span> 'driver' => 'mysql', <span>13</span> 'hostname' => 'localhost', <span>14</span> 'username' => 'root', <span>15</span> 'password' => '', <span>16</span> 'database' => 'youtube' <span>17</span> ), <span>18</span> 'urlManager' => <span>array</span><span> ( </span><span>19</span> 'urlFormat' => 'path', <span>20</span> 'rules' => <span>array</span><span> ( </span><span>21</span> 'comment_reply/<a:\d+>/<ci:\d+>' => 'reply/load_comment_reply', <span>22</span> 'b/<id:\d+>' => <span>array</span><span> ( </span><span>23</span> 'video/broadcast', <span>24</span> 'urlSuffix' => '.html' <span>25</span> ), <span>26</span> 'c/<list_start:\d+>' => 'video/list_more_video', <span>27</span> 'u/reg' => 'user/reg', <span>28</span> 'v/upload' => 'video/upload_video', <span>29</span> 'login' => 'user/to_login', <span>30</span> 'show_chanel/<chanel_id:\d+>' => 'show/chanel' , <span>31</span> 'show/<show_id:\d+>' => 'show/show', <span>32</span> <span> ) </span><span>33</span> <span> ) </span><span>34</span> <span> ) </span><span>35</span> <span>); </span><span>36</span> ?>
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这个文件就返回了个map,里面components中的db,urlManager便是我注册的系统中的组件,里面的array便是组件的参数.
从源码中看到$type = $config ['class'];$object = new $type;就创建了注册的类实例了。
3.import($alias, $forceInclude = false)。作用：导入一个类或一个目录。导入一个类就像包含相应的类文件。 主要区别是导入一个类比较轻巧， 它仅在类文件首次引用时包含。这个也是yii的一个核心优化点。
这个在上面createComponent($config)中有用到，
if (!class_exists ( $type, false )) {
$type = Yii::import ( $type, true );
}
如果$type类没有定义，就去导入。有些组件，核心在yii中多次create调用，这样就保证了仅在类文件首次引用时导入。
下面分析index.php中Yii::createWebApplication ( $config )的调用过程。
这个调用是去了CWebApplication。
<span> 1</span> <?<span>php
</span><span> 2</span> <span>class</span> CWebApplication <span>extends</span><span> CApplication {
</span><span> 3</span> <span>public</span> <span>$controllerNamespace</span><span>;
</span><span> 4</span> <span>private</span> <span>$_controllerPath</span><span>;
</span><span> 5</span> <span>private</span> <span>$_viewPath</span><span>;
</span><span> 6</span> <span>private</span> <span>$_systemViewPath</span><span>;
</span><span> 7</span> <span>private</span> <span>$_controller</span><span>;
</span><span> 8</span> <span>public</span> <span>$controllerMap</span>=<span>array</span><span>();
</span><span> 9</span> <span>public</span> <span>function</span> processRequest() {<span>//</span><span>开始执行请求
</span><span>10</span> <span> //获取urlManager组件，解析请求，得到controller/action这种格式的string,
</span><span>11</span> <span> //并且将隐藏参数与请求的参数一一对应，匹配起来，写入$_REQUEST中</span>
<span>12</span> <span>$route</span> = <span>$this</span>->getUrlManager ()->parseUrl (<span>$this</span>-><span>getRequest());
</span><span>13</span> <span>$this</span>->runController ( <span>$route</span><span> );
</span><span>14</span> <span> }
</span><span>15</span> <span>public</span> <span>function</span> getRequest() {<span>//</span><span>获取request组件</span>
<span>16</span> <span>return</span> <span>$this</span>->getComponent ( 'request'<span> );
</span><span>17</span> <span> }
</span><span>18</span> <span>protected</span> <span>function</span> registerCoreComponents() {<span>//</span><span>注册核心组件</span>
<span>19</span> parent::<span>registerCoreComponents ();
</span><span>20</span> <span> }
</span><span>21</span> <span>//</span><span>执行contronller</span>
<span>22</span> <span>public</span> <span>function</span> runController(<span>$route</span><span>) {
</span><span>23</span> <span>if</span> ((<span>$ca</span> = <span>$this</span>->createController ( <span>$route</span> )) !== <span>null</span><span>) {
</span><span>24</span> <span>list</span> ( <span>$controller</span>, <span>$actionID</span> ) = <span>$ca</span><span>;
</span><span>25</span> <span>$oldController</span> = <span>$this</span>-><span>_controller;
</span><span>26</span> <span>$this</span>->_controller = <span>$controller</span><span>;
</span><span>27</span> <span>$controller</span>->init ();<span>//</span><span>钩子,在执行action方法前调用，子类去实现</span>
<span>28</span> <span>$controller</span>->run ( <span>$actionID</span> );<span>//</span><span>开始转入controller类中action方法的执行</span>
<span>29</span> <span>$this</span>->_controller = <span>$oldController</span><span>;
</span><span>30</span> <span> }
</span><span>31</span> <span> }
</span><span>32</span> <span>//</span><span>创建controller类实例,从controller/action这种格式的string中解析出$controller, $actionID </span>
<span>33</span> <span>public</span> <span>function</span> createController(<span>$route</span>, <span>$owner</span> = <span>null</span><span>) {
</span><span>34</span> <span>if</span> (<span>$owner</span> === <span>null</span><span>)
</span><span>35</span> <span>$owner</span> = <span>$this</span><span>;
</span><span>36</span> <span>if</span> ((<span>$route</span> = <span>trim</span> ( <span>$route</span>, '/' )) === ''<span>)
</span><span>37</span> <span>$route</span> = <span>$owner</span>-><span>defaultController;
</span><span>38</span>
<span>39</span> <span>$route</span> .= '/'<span>;
</span><span>40</span> <span>while</span> ( (<span>$pos</span> = <span>strpos</span> ( <span>$route</span>, '/' )) !== <span>false</span><span> ) {
</span><span>41</span> <span>$id</span> = <span>substr</span> ( <span>$route</span>, 0, <span>$pos</span><span> );
</span><span>42</span> <span>if</span> (! <span>preg_match</span> ( '/^\w+$/', <span>$id</span><span> ))
</span><span>43</span> <span>return</span> <span>null</span><span>;
</span><span>44</span> <span>$id</span> = <span>strtolower</span> ( <span>$id</span><span> );
</span><span>45</span> <span>$route</span> = ( <span>string</span> ) <span>substr</span> ( <span>$route</span>, <span>$pos</span> + 1<span> );
</span><span>46</span> <span>if</span> (! <span>isset</span> ( <span>$basePath</span> )) <span>//</span><span> first segment</span>
<span>47</span> <span> {
</span><span>48</span> <span>$basePath</span> = <span>$owner</span>-><span>getControllerPath ();
</span><span>49</span> <span>$controllerID</span> = ''<span>;
</span><span>50</span> } <span>else</span><span> {
</span><span>51</span> <span>$controllerID</span> .= '/'<span>;
</span><span>52</span> <span> }
</span><span>53</span> <span>$className</span> = <span>ucfirst</span> ( <span>$id</span> ) . 'Controller'<span>;
</span><span>54</span> <span>$classFile</span> = <span>$basePath</span> . DIRECTORY_SEPARATOR . <span>$className</span> . '.php'<span>;
</span><span>55</span>
<span>56</span> <span>if</span> (<span>is_file</span> ( <span>$classFile</span><span> )) {
</span><span>57</span> <span>if</span> (! <span>class_exists</span> ( <span>$className</span>, <span>false</span><span> ))
</span><span>58</span> <span>require</span> (<span>$classFile</span><span>);
</span><span>59</span> <span>if</span> (<span>class_exists</span> ( <span>$className</span>, <span>false</span> ) && <span>is_subclass_of</span> ( <span>$className</span>, 'CController'<span> )) {
</span><span>60</span> <span>$id</span> [0] = <span>strtolower</span> ( <span>$id</span> [0<span>] );
</span><span>61</span> <span>return</span> <span>array</span><span> (
</span><span>62</span> <span>new</span> <span>$className</span> ( <span>$controllerID</span> . <span>$id</span>, <span>$owner</span> === <span>$this</span> ? <span>null</span> : <span>$owner</span> ),
<span>63</span> <span>$this</span>->parseActionParams ( <span>$route</span><span> )
</span><span>64</span> <span> );
</span><span>65</span> <span> }
</span><span>66</span> <span>return</span> <span>null</span><span>;
</span><span>67</span> <span> }
</span><span>68</span> <span>$controllerID</span> .= <span>$id</span><span>;
</span><span>69</span> <span>$basePath</span> .= DIRECTORY_SEPARATOR . <span>$id</span><span>;
</span><span>70</span> <span> }
</span><span>71</span> <span> }
</span><span>72</span> <span>protected</span> <span>function</span> parseActionParams(<span>$pathInfo</span><span>) {
</span><span>73</span> <span>if</span> ((<span>$pos</span> = <span>strpos</span> ( <span>$pathInfo</span>, '/' )) !== <span>false</span><span>) {
</span><span>74</span> <span>$manager</span> = <span>$this</span>->getUrlManager ();<span>//</span><span>再次获取urlManager,在上面第一次调用中已经导入。</span>
<span>75</span> <span>$manager</span>->parsePathInfo ( ( <span>string</span> ) <span>substr</span> ( <span>$pathInfo</span>, <span>$pos</span> + 1<span> ) );
</span><span>76</span> <span>$actionID</span> = <span>substr</span> ( <span>$pathInfo</span>, 0, <span>$pos</span><span> );
</span><span>77</span> <span>return</span> <span>$manager</span>->caseSensitive ? <span>$actionID</span> : <span>strtolower</span> ( <span>$actionID</span><span> );
</span><span>78</span> } <span>else</span>
<span>79</span> <span>return</span> <span>$pathInfo</span><span>;
</span><span>80</span> <span> }
</span><span>81</span> <span>public</span> <span>function</span><span> getControllerPath() {
</span><span>82</span> <span>if</span> (<span>$this</span>->_controllerPath !== <span>null</span><span>)
</span><span>83</span> <span>return</span> <span>$this</span>-><span>_controllerPath;
</span><span>84</span> <span>else</span>
<span>85</span> <span>return</span> <span>$this</span>->_controllerPath = <span>$this</span>->getBasePath () . DIRECTORY_SEPARATOR . 'controllers'<span>;
</span><span>86</span> <span> }
</span><span>87</span> <span>//</span><span>两个钩子,子类去实现</span>
<span>88</span> <span>public</span> <span>function</span> beforeControllerAction(<span>$controller</span>, <span>$action</span><span>) {
</span><span>89</span> <span>return</span> <span>true</span><span>;
</span><span>90</span> <span> }
</span><span>91</span> <span>public</span> <span>function</span> afterControllerAction(<span>$controller</span>, <span>$action</span><span>) {
</span><span>92</span> <span> }
</span><span>93</span> <span>protected</span> <span>function</span><span> init() {
</span><span>94</span> parent::<span>init ();
</span><span>95</span> <span> }
</span><span>96</span> }Copier après la connexion
没有构造方法，构造方法在父类CApplication里面。
<span> 1</span> <?<span>php
</span><span> 2</span> <span>abstract</span> <span>class</span> CApplication <span>extends</span><span> CModule {
</span><span> 3</span> <span>private</span> <span>$_id</span><span>;
</span><span> 4</span> <span>private</span> <span>$_basePath</span><span>;
</span><span> 5</span> <span>abstract</span> <span>public</span> <span>function</span><span> processRequest();
</span><span> 6</span> <span>public</span> <span>function</span> __construct(<span>$config</span> = <span>null</span><span>) {
</span><span> 7</span> <span>if</span> (<span>is_string</span> ( <span>$config</span><span> ))
</span><span> 8</span> <span>$config</span> = <span>require</span> (<span>$config</span><span>);
</span><span> 9</span> Yii::setApplication ( <span>$this</span> );<span>//</span><span>保存整个app实例</span>
<span>10</span> <span>if</span> (<span>isset</span> ( <span>$config</span> ['basePath'<span>] )) {
</span><span>11</span> <span>$this</span>->setBasePath ( <span>$config</span> ['basePath'<span>] );
</span><span>12</span> <span>unset</span> ( <span>$config</span> ['basePath'<span>] );
</span><span>13</span> } <span>else</span>
<span>14</span> <span>$this</span>->setBasePath ( 'protected'<span> );
</span><span>15</span> <span>//</span><span>设置别名,后面就可以用application表示basePath了</span>
<span>16</span> Yii::setPathOfAlias ( 'application', <span>$this</span>-><span>getBasePath () );
</span><span>17</span> <span>//</span><span>钩子，模块 预 初始化时执行，子类实现。不过这时，配置还没有写入框架</span>
<span>18</span> <span>$this</span>-><span>preinit ();
</span><span>19</span> <span>$this</span>-><span>registerCoreComponents ();
</span><span>20</span> <span>//</span><span>父类实现</span>
<span>21</span> <span>$this</span>->configure ( <span>$config</span><span> );
</span><span>22</span> <span>//</span><span>加载静态应用组件</span>
<span>23</span> <span>$this</span>-><span>preloadComponents ();
</span><span>24</span> <span>//</span><span>这才开始初始化模块</span>
<span>25</span> <span>$this</span>-><span>init ();
</span><span>26</span> <span> }
</span><span>27</span> <span>protected</span> <span>function</span><span> registerCoreComponents() {
</span><span>28</span> <span>$components</span> = <span>array</span><span> (
</span><span>29</span> 'request' => <span>array</span><span> (
</span><span>30</span> 'class' => 'CHttpRequest'
<span>31</span> ),
<span>32</span> 'urlManager' => <span>array</span><span> (
</span><span>33</span> 'class' => 'CUrlManager'
<span>34</span> <span> )
</span><span>35</span> <span> );
</span><span>36</span>
<span>37</span> <span>$this</span>->setComponents ( <span>$components</span> );<span>//</span><span>父类实现</span>
<span>38</span> <span> }
</span><span>39</span> <span>public</span> <span>function</span><span> run() {
</span><span>40</span> <span>$this</span>-><span>processRequest ();
</span><span>41</span> <span> }
</span><span>42</span> <span>public</span> <span>function</span><span> getId() {
</span><span>43</span> <span>if</span> (<span>$this</span>->_id !== <span>null</span><span>)
</span><span>44</span> <span>return</span> <span>$this</span>-><span>_id;
</span><span>45</span> <span>else</span>
<span>46</span> <span>return</span> <span>$this</span>->_id = <span>sprintf</span> ( '%x', <span>crc32</span> ( <span>$this</span>->getBasePath () . <span>$this</span>-><span>name ) );
</span><span>47</span> <span> }
</span><span>48</span> <span>public</span> <span>function</span> setId(<span>$id</span><span>) {
</span><span>49</span> <span>$this</span>->_id = <span>$id</span><span>;
</span><span>50</span> <span> }
</span><span>51</span> <span>public</span> <span>function</span><span> getBasePath() {
</span><span>52</span> <span>return</span> <span>$this</span>-><span>_basePath;
</span><span>53</span> <span> }
</span><span>54</span> <span>public</span> <span>function</span> setBasePath(<span>$path</span><span>) {
</span><span>55</span> <span>if</span> ((<span>$this</span>->_basePath = <span>realpath</span> ( <span>$path</span> )) === <span>false</span> || ! <span>is_dir</span> ( <span>$this</span>-><span>_basePath ))
</span><span>56</span> <span>return</span><span>;
</span><span>57</span> <span> }
</span><span>58</span> <span>public</span> <span>function</span><span> getDb() {
</span><span>59</span> <span>return</span> <span>$this</span>->getComponent ( 'db' );<span>//</span><span>父类实现</span>
<span>60</span> <span> }
</span><span>61</span> <span>public</span> <span>function</span><span> getUrlManager() {
</span><span>62</span> <span>return</span> <span>$this</span>->getComponent ( 'urlManager'<span> );
</span><span>63</span> <span> }
</span><span>64</span> <span>public</span> <span>function</span><span> getController() {
</span><span>65</span> <span>return</span> <span>null</span><span>;
</span><span>66</span> <span> }
</span><span>67</span> <span>public</span> <span>function</span> getBaseUrl(<span>$absolute</span> = <span>false</span><span>) {
</span><span>68</span> <span>return</span> <span>$this</span>->getRequest ()->getBaseUrl ( <span>$absolute</span><span> );
</span><span>69</span> <span> }
</span><span>70</span> }Copier après la connexion
__construct里面注释写的很详细了，值得注意的是registerCoreComponents ()。前面说了那么多，那么Yii::createWebApplication ( $config )到底是做什么的。
其实最终目的对这个裁剪过的yii而言就是注册核心组件。就这么简单.
setComponents ( $components )在父类CModule里面.
<span> 1</span> <?<span>php
</span><span> 2</span> <span>abstract</span> <span>class</span> CModule <span>extends</span><span> CComponent {
</span><span> 3</span> <span>public</span> <span>$preload</span> = <span>array</span><span> ();
</span><span> 4</span> <span>public</span> <span>$behaviors</span> = <span>array</span><span> ();
</span><span> 5</span> <span>private</span> <span>$_id</span><span>;
</span><span> 6</span> <span>private</span> <span>$_parentModule</span><span>;
</span><span> 7</span> <span>private</span> <span>$_basePath</span><span>;
</span><span> 8</span> <span>private</span> <span>$_modulePath</span><span>;
</span><span> 9</span> <span>private</span> <span>$_params</span><span>;
</span><span>10</span> <span>private</span> <span>$_modules</span> = <span>array</span><span> ();
</span><span>11</span> <span>private</span> <span>$_moduleConfig</span> = <span>array</span><span> ();
</span><span>12</span> <span>private</span> <span>$_components</span> = <span>array</span><span> ();
</span><span>13</span> <span>private</span> <span>$_componentConfig</span> = <span>array</span><span> ();
</span><span>14</span> <span>//</span><span>重写是为了方便直接用 application.组件 这种方式直接获取组件</span>
<span>15</span> <span>public</span> <span>function</span> __get(<span>$name</span><span>) {
</span><span>16</span> <span>if</span> (<span>$this</span>->hasComponent ( <span>$name</span><span> ))
</span><span>17</span> <span>return</span> <span>$this</span>->getComponent ( <span>$name</span><span> );
</span><span>18</span> <span>else</span>
<span>19</span> <span>return</span> parent::__get ( <span>$name</span><span> );
</span><span>20</span> <span> }
</span><span>21</span> <span>public</span> <span>function</span> __isset(<span>$name</span><span>) {
</span><span>22</span> <span>if</span> (<span>$this</span>->hasComponent ( <span>$name</span><span> ))
</span><span>23</span> <span>return</span> <span>$this</span>->getComponent ( <span>$name</span> ) !== <span>null</span><span>;
</span><span>24</span> <span>else</span>
<span>25</span> <span>return</span> parent::__isset ( <span>$name</span><span> );
</span><span>26</span> <span> }
</span><span>27</span> <span>public</span> <span>function</span> hasComponent(<span>$id</span><span>) {
</span><span>28</span> <span>return</span> <span>isset</span> ( <span>$this</span>->_components [<span>$id</span>] ) || <span>isset</span> ( <span>$this</span>->_componentConfig [<span>$id</span><span>] );
</span><span>29</span> <span> }
</span><span>30</span> <span>//
</span><span>31</span> <span>public</span> <span>function</span> getComponent(<span>$id</span>, <span>$createIfNull</span> = <span>true</span><span>) {
</span><span>32</span> <span>if</span> (<span>isset</span> ( <span>$this</span>->_components [<span>$id</span><span>] ))
</span><span>33</span> <span>return</span> <span>$this</span>->_components [<span>$id</span><span>];
</span><span>34</span> <span>else</span> <span>if</span> (<span>isset</span> ( <span>$this</span>->_componentConfig [<span>$id</span>] ) && <span>$createIfNull</span><span>) {
</span><span>35</span> <span>$config</span> = <span>$this</span>->_componentConfig [<span>$id</span><span>];
</span><span>36</span> <span>$component</span> = Yii::createComponent ( <span>$config</span> );<span>//</span><span>YiiBase,返回组件实例</span>
<span>37</span> <span>$component</span>->init ();<span>//</span><span>钩子，调用子类重写的init方法
</span><span>38</span> <span> //将组件写入数组保存，并返回</span>
<span>39</span> <span>return</span> <span>$this</span>->_components [<span>$id</span>] = <span>$component</span><span>;
</span><span>40</span> <span> }
</span><span>41</span> <span> }
</span><span>42</span> <span>public</span> <span>function</span> setComponent(<span>$id</span>, <span>$component</span>, <span>$merge</span> = <span>true</span><span>) {
</span><span>43</span> <span>//</span><span>组件写入数组保存</span>
<span>44</span> <span>if</span> (<span>isset</span> ( <span>$this</span>->_componentConfig [<span>$id</span>] ) && <span>$merge</span><span>) {
</span><span>45</span>
<span>46</span> <span>$this</span>->_componentConfig [<span>$id</span>] = self::mergeArray ( <span>$this</span>->_componentConfig [<span>$id</span>], <span>$component</span><span> );
</span><span>47</span> } <span>else</span><span> {
</span><span>48</span>
<span>49</span> <span>$this</span>->_componentConfig [<span>$id</span>] = <span>$component</span><span>;
</span><span>50</span> <span> }
</span><span>51</span> <span> }
</span><span>52</span> <span>public</span> <span>static</span> <span>function</span> mergeArray(<span>$a</span>, <span>$b</span><span>) {
</span><span>53</span> <span>$args</span> = <span>func_get_args</span><span> ();
</span><span>54</span> <span>$res</span> = <span>array_shift</span> ( <span>$args</span><span> );
</span><span>55</span> <span>while</span> ( ! <span>empty</span> ( <span>$args</span><span> ) ) {
</span><span>56</span> <span>$next</span> = <span>array_shift</span> ( <span>$args</span><span> );
</span><span>57</span> <span>foreach</span> ( <span>$next</span> <span>as</span> <span>$k</span> => <span>$v</span><span> ) {
</span><span>58</span> <span>if</span> (<span>is_integer</span> ( <span>$k</span><span> ))
</span><span>59</span> <span>isset</span> ( <span>$res</span> [<span>$k</span>] ) ? <span>$res</span> [] = <span>$v</span> : <span>$res</span> [<span>$k</span>] = <span>$v</span><span>;
</span><span>60</span> <span>elseif</span> (<span>is_array</span> ( <span>$v</span> ) && <span>isset</span> ( <span>$res</span> [<span>$k</span>] ) && <span>is_array</span> ( <span>$res</span> [<span>$k</span><span>] ))
</span><span>61</span> <span>$res</span> [<span>$k</span>] = self::mergeArray ( <span>$res</span> [<span>$k</span>], <span>$v</span><span> );
</span><span>62</span> <span>else</span>
<span>63</span> <span>$res</span> [<span>$k</span>] = <span>$v</span><span>;
</span><span>64</span> <span> }
</span><span>65</span> <span> }
</span><span>66</span> <span>return</span> <span>$res</span><span>;
</span><span>67</span> <span> }
</span><span>68</span> <span>public</span> <span>function</span> setComponents(<span>$components</span>, <span>$merge</span> = <span>true</span><span>) {
</span><span>69</span> <span>foreach</span> ( <span>$components</span> <span>as</span> <span>$id</span> => <span>$component</span><span> )
</span><span>70</span> <span>$this</span>->setComponent ( <span>$id</span>, <span>$component</span>, <span>$merge</span><span> );
</span><span>71</span> <span> }
</span><span>72</span> <span>//</span><span>子类CApplication调用，用来为模块指定配置</span>
<span>73</span> <span>public</span> <span>function</span> configure(<span>$config</span><span>) {
</span><span>74</span> <span>if</span> (<span>is_array</span> ( <span>$config</span><span> )) {
</span><span>75</span> <span>foreach</span> ( <span>$config</span> <span>as</span> <span>$key</span> => <span>$value</span><span> )
</span><span>76</span> <span>$this</span>-><span>$key</span> = <span>$value</span><span>;
</span><span>77</span> <span> }
</span><span>78</span> <span> }
</span><span>79</span> <span>protected</span> <span>function</span><span> preloadComponents() {
</span><span>80</span> <span>foreach</span> ( <span>$this</span>->preload <span>as</span> <span>$id</span><span> )
</span><span>81</span> <span>$this</span>->getComponent ( <span>$id</span><span> );
</span><span>82</span> <span> }
</span><span>83</span> <span>//</span><span>又是两个钩子</span>
<span>84</span> <span>protected</span> <span>function</span><span> preinit() {
</span><span>85</span> <span> }
</span><span>86</span> <span>protected</span> <span>function</span><span> init() {
</span><span>87</span> <span> }
</span><span>88</span> }Copier après la connexion
看到所谓的注册组件就是写入数组保存，getComponent()的时候就是用前面讲到的YiiBase里面的createComponent($config)返回组件实例。就这么简单。
而CApplication里面的什么getDb()，getUrlManager()也是在调用getComponent()。
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Outils de développement Web visuel
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Logiciel d'édition de code au niveau de Dieu (SublimeText3)
Comment utiliser le framework PHP Yii pour développer un système de sauvegarde cloud hautement disponible
Jun 27, 2023 am 09:04 AM
Avec le développement continu de la technologie du cloud computing, la sauvegarde des données est devenue quelque chose que chaque entreprise doit faire. Dans ce contexte, il est particulièrement important de développer un système de sauvegarde cloud hautement disponible. Le framework PHP Yii est un framework puissant qui peut aider les développeurs à créer rapidement des applications Web hautes performances. Ce qui suit explique comment utiliser le framework Yii pour développer un système de sauvegarde cloud hautement disponible. Conception du modèle de base de données Dans le framework Yii, le modèle de base de données est une partie très importante. Parce que le système de sauvegarde des données nécessite beaucoup de tables et de relations
Symfony vs Yii2 : quel framework est le meilleur pour développer des applications Web à grande échelle ?
Jun 19, 2023 am 10:57 AM
Alors que la demande d'applications Web continue de croître, les développeurs ont de plus en plus de choix dans le choix des frameworks de développement. Symfony et Yii2 sont deux frameworks PHP populaires. Ils ont tous deux des fonctions et des performances puissantes, mais face à la nécessité de développer des applications Web à grande échelle, quel framework est le plus adapté ? Nous procéderons ensuite à une analyse comparative de Symphony et Yii2 pour vous aider à faire un meilleur choix. Présentation de base Symphony est un framework d'application Web open source écrit en PHP et basé sur
Comment utiliser le framework Yii3 en php ?
May 31, 2023 pm 10:42 PM
À mesure qu’Internet continue de se développer, la demande de développement d’applications Web augmente également. Pour les développeurs, le développement d'applications nécessite un cadre stable, efficace et puissant, qui peut améliorer l'efficacité du développement. Yii est un framework PHP hautes performances de premier plan qui offre des fonctionnalités riches et de bonnes performances. Yii3 est la version nouvelle génération du framework Yii, qui optimise davantage les performances et la qualité du code basé sur Yii2. Dans cet article, nous présenterons comment utiliser le framework Yii3 pour développer des applications PHP.
Requête de données dans le framework Yii : accédez efficacement aux données
Jun 21, 2023 am 11:22 AM
Le framework Yii est un framework d'application Web PHP open source qui fournit de nombreux outils et composants pour simplifier le processus de développement d'applications Web, dont la requête de données est l'un des composants importants. Dans le framework Yii, nous pouvons utiliser une syntaxe de type SQL pour accéder à la base de données afin d'interroger et de manipuler les données efficacement. Le générateur de requêtes du framework Yii comprend principalement les types suivants : requête ActiveRecord, requête QueryBuilder, requête de commande et requête SQL originale.
Yii2 vs Phalcon : quel framework est le meilleur pour développer des applications de rendu graphique ?
Jun 19, 2023 am 08:09 AM
À l’ère actuelle de l’information, le big data, l’intelligence artificielle, le cloud computing et d’autres technologies sont devenus au centre des préoccupations des grandes entreprises. Parmi ces technologies, la technologie de rendu des cartes graphiques, en tant que technologie de traitement graphique haute performance, fait l'objet de plus en plus d'attention. La technologie de rendu des cartes graphiques est largement utilisée dans le développement de jeux, les effets spéciaux de films et de télévision, la modélisation technique et d'autres domaines. Pour les développeurs, choisir un framework adapté à leurs projets est une décision très importante. Parmi les langages actuels, PHP est un langage très dynamique. Quelques excellents frameworks PHP comme Yii2, Ph.
Guide de programmation Yii2 : Comment exécuter le service Cron
Sep 01, 2023 pm 11:21 PM
Si vous demandez « Qu'est-ce que Yii ? », consultez mon tutoriel précédent : Introduction au framework Yii, qui passe en revue les avantages de Yii et décrit les nouveautés de Yii 2.0, publié en octobre 2014. Hmm> Dans cette série Programmation avec Yii2, je guiderai les lecteurs dans l'utilisation du framework Yii2PHP. Dans le didacticiel d'aujourd'hui, je vais partager avec vous comment tirer parti des fonctionnalités de la console Yii pour exécuter des tâches cron. Dans le passé, j'ai utilisé wget - une URL accessible sur le Web - dans une tâche cron pour exécuter mes tâches en arrière-plan. Cela soulève des problèmes de sécurité et entraîne des problèmes de performances. Alors que je discutais de certaines façons d'atténuer les risques dans notre série Sécurité pour les startups, j'avais espéré passer aux commandes pilotées par la console.
Comment convertir des objets yii en tableaux ou directement au format json
Jan 08, 2021 am 10:13 AM
Framework Yii : cet article présente la méthode de Yii pour convertir des objets en tableaux ou les afficher directement au format json. Il a une certaine valeur de référence et j'espère qu'il pourra vous aider.
Développement PHP : utilisez Yii2 et GrapeJS pour implémenter un CMS back-end et une édition visuelle front-end
Jun 15, 2023 pm 11:48 PM
Dans le développement de logiciels modernes, créer un système de gestion de contenu (CMS) puissant n’est pas une tâche facile. Non seulement les développeurs doivent posséder des compétences et une expérience approfondies, mais ils doivent également utiliser les technologies et les outils les plus avancés pour optimiser leurs fonctionnalités et leurs performances. Cet article explique comment utiliser Yii2 et GrapeJS, deux logiciels open source populaires, pour implémenter un CMS back-end et une édition visuelle frontale. Yii2 est un framework PHPWeb populaire qui fournit des outils et des composants riches pour créer rapidement
