How to set constants in yii1.0

Yii1.0 method of setting constants: first create a new "constants.php"; then define the constants through the method "define('CL', 'https://www.baidu.com/');"; Then introduce the constants into the system; finally, call the system constants anywhere in the system.

yii Set system constants

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1, create a new constants.php under protected/config/

2, define constants in constants.php define('CL', 'https://www.baidu.com/');/ /Constant name, constant content

3, introduce constants into the system: introduce the system into the entry index.php file, require_once(dirname(__FILE__).'/protected/config/constants.php');

4. Call system constants anywhere in the system:

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