500 error when accessing the php program means that the server encountered an unexpected situation, causing it to be unable to complete the processing of the request. This problem will occur when there is an error in the source code on the server side. The usual explanation is that the server encountered an error and was unable to complete the request.
Five solutions
1. Routine server maintenance, shutdown processing, or program update. At this time, when the viewer logs in to the website, a 500 error message will be reported. Errors can usually be resolved automatically after maintenance and updates are completed and the server is started. Users only need to wait patiently.
2. Program bug. When the program written by the programmer is not rigorous enough and an exception occurs, the viewer will also see a 500 error. The way to solve this problem is to contact the program developer and proceed with the program. Track and debug the program to find the error, then modify the program. After testing, there are no problems, re-release the program, and then the system becomes normal.
3. Caused by poisoning. Sometimes, a virus will rewrite some settings of the server, causing users to be unable to access normally and reporting a 500 error. At this time, the programmer needs to perform anti-virus processing. After processing the program, The system returns to normal.
4. Configuration problems. Sometimes, users cannot access the website because there is a problem with the configuration of system parameters. If this happens, ask BASIS personnel to handle it. After the processing is completed, access will be normal.
5. Database problems. The read and write operations of the website are all in the database. If the database is abnormal, the access will also be abnormal. If you encounter such a situation, notify the DBA of the website and ask him to help analyze and solve it. After the solution is completed , access will be normal.
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