Solve the problem of MYSQL connection port being occupied and introducing file path errors

This morning I planned to use Wampserver to build a PHP environment on my local win7 machine and configure my own applet. After downloading the latest wampserver 3.0.6 version and installing it, I found that mysql could not run. I thought it was a problem with the wampserver version, so I downloaded related versions 2.4, 2.5, etc. and installed them, but the problem was still not solved. The main phenomenon was that there was no response after entering the password and pressing Enter in the mysql command prompt, and then the command prompt disappeared automatically. In addition, when I entered the password in PHPMyAdmin, three error prompts such as connection timeout appeared directly, or it prompted that the connection could not be connected. Later, I uninstalled wampserver directly and used phpStudy to build the environment. After installation, I started it. Apache started normally, but when mysql started, it prompted that the port was occupied. The problem was finally found. The real reason why mysql could not connect was that the local port was occupied. Then I opened the general port settings in phpStudy settings, changed the mysql port to 3305, and then saved and restarted. The problem was perfectly solved. In addition, I set the binding domain name and path in the local phpStudy and modified the host file. My own program configuration was successful.

In the afternoon, when I modified a PHP program, I put the program into phpStudy, configured the path domain name and host file, and modified the database connection file. When running the program, a path error occurred because the program was downloaded from the LINUX server, and the file path contained in it needed to be modified correctly. After modifying the path in include_once "", I ran it again and registered a member. When I went to write to the database, the screen was white and there was no response for a long time. After a while, it prompted that the connection timed out. I thought it was probably a problem with the connection port, so I modified the database connection code $db = new ezSQL_mysql('root','root','sd','localhost:3305') and the problem was solved.

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