My previous verification was OK, but when I finally executed it, after typing the executed if statement, connecting to the database, and refreshing the page again, "page error" appeared. I verified the code repeatedly, and I also tried to connect to the database using other methods. For example, it is no problem to build a function and then connect it to read data. May I ask how is this going? How to solve it?

There was a problem with the final execution.-PHP Chinese Network Q&A

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There was a problem with the final execution.

phpcn_u17776 2017-08-31 13:53:41

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My previous verification was OK. When I finished the execution, I finished the if statement and connected to the database. When I refreshed the page again, "page error" appeared. I verified the code repeatedly. I also tried using other databases. There is no problem in connecting by creating a function and then connecting it to read data. May I ask how is this going? How to solve it?

phpcn_u17776

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phpcn_u177762017-09-01 13:43:27 2 floor

屏幕快照 2017-08-31 下午10.39.23.png

This is the execution code

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reply Then debug with a breakpoint here, debug step by step, and then check if there is a return value in netword. This should be where there is an error.

ringa_lee author 2017-09-01 15:34:14

reply How to debug this execution code? I just learned php and don't understand it very well. Can you give an example?

phpcn_u17776 author 2017-09-01 16:23:30

reply I think Teacher Zhu uses alert() to display the value. is that so? How should it be written?

phpcn_u17776 author 2017-09-01 16:25:34

reply Yes

ringa_lee author 2017-09-02 08:58:18

ringa_lee2017-08-31 15:05:18 1 floor

Enable debug and see what the error message is and the number of lines where the error is reported.

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reply This problem has been solved, but after entering the login interface, why does nothing happen after entering the account number and password and clicking login?

phpcn_u17776 author 2017-08-31 15:20:50

reply Reply to ringa_lee: I can give you a screenshot of the code

phpcn_u17776 author 2017-09-01 10:26:05

reply Reply to phpcn_u17776: Hello, how did you solve this problem jquery.min.js:5 POST http://www.mdoor.com/index/user/checklogin.html 500 (Internal Server Error)

YY author 2017-10-16 15:40:24

reply I just started learning PHP and I don’t quite understand it. I looked at the return value of network and it is checklogin.html. But I don’t have the checklogin.html file.

phpcn_u17776 author 2017-08-31 16:15:48

reply Is it 500, internal server error? How should this be solved?

phpcn_u17776 author 2017-08-31 16:29:42

reply Still not sure what's going on, I put the return statement under the verification, and a true will appear on the login interface, and the network is 200, no problem. But if you add the last execution statement, there will be a problem, it will become 500. It means that the checlogin method can be found earlier. But when executing the statement, I compared it with the teacher's code many times and found no problem. How is this going. And if I entered the correct account and password earlier, it would return true.

phpcn_u17776 author 2017-09-01 05:02:46

reply Okay, are you on QQ? which one is you?

phpcn_u17776 author 2017-09-01 08:54:24

reply I just joined the 7 and 5 group

phpcn_u17776 author 2017-09-01 08:54:56

reply I can give you a screenshot of the code

phpcn_u17776 author 2017-09-01 10:26:42

reply /Users/yuanjiezhang/Desktop/Screenshot 2017-08-31 10.39.23.png

phpcn_u17776 author 2017-09-01 13:41:02

reply The above answer is a screenshot of my execution code

phpcn_u17776 author 2017-09-01 13:44:26

reply You should use AJAX to log in. Check the network to see what is returned, and then go to the program to debug with breakpoints.

ringa_lee author 2017-08-31 15:41:43

reply Yes, the error is reported because there is no checklogin method. Then you can use the checklogin method to verify the login.

ringa_lee author 2017-08-31 18:12:20

reply There must be something wrong with the executed program. Post the code and take a look.

ringa_lee author 2017-09-01 08:53:22

reply Just post the screenshot under the reply, you can see it

ringa_lee author 2017-09-01 13:38:15