Components method
Introduction and definition:
In the config.php file
’components’=>array( ’xyz’=>array( ’class’=>’ext.xyz.XyzClass’, ’property1’=>’value1’, ’property2’=>’value2’, ), // other component configurations ),
Usage method:
Anywhere, use Yii::app()->xyz, you can directly use the xyz component, and the component loading method is lazilycreated, as long as we are not defined in preload=array(), then That is, it will be instantiated when it is used for the first time, so there is no need to worry that putting it in config.php will affect performance.
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