Share the issue that the cookie cannot be obtained in a ci framework. Because online banking payment is used in the project, in the 360 speedy browser and other dual-core browsers, when they jump to the payment, they will force the browser mode to be compatible, in this way, because online banking payment is used in the project, in the 360 speed browser and other dual-core browsers, when the jump to the payment, they will force the browser mode to be compatible, in this way, the cookie in the fast mode cannot be obtained in the compatible mode, because the user_agent has changed during the browser switching mode, and tried to force the cookie to use a certain mode in the 360 browser, however, in different versions, the problem cannot be solved perfectly. In the end, the session in the ci is found to judge the option by 192 rows in the session class. The final solution is to modify the config. in php, $ config ['sess _ match_useragent '] = FALSE; change to false to solve this problem!
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