Solve the problem of long response time of ajax request server under PHP

How to solve the long response time of ajax request server under PHP: first enter the test URL in the browser, find Networky and the request sent by ajax; then find the php file corresponding to the response time of TTFB, and delete these Code; finally change the database localhost to [127.0.0.1].

How to solve the long response time of ajax request server under PHP:

1. First open the browser and enter Test the URL (this example uses Google Chrome), press F12 or right-click to check, find the Network item, and find the request sent by ajax. If there is no request, refresh it again, as shown below:

2. You can see that the response time of the PHP side is more than 1s. Move the mouse over the blue bar and you can see that there is a TTFB response time inside, as shown below:

3. The response time is too long. You can see which file has the long response time on the far left. Find the corresponding php file, kill all the code, then refresh and request again. You can see the new request time. As shown in the picture:

4. Print breakpoints in the PHP file and get the results through repeated trials. My PHP side has an operation to connect data, and the response time is too long. This is related, so I checked my code for connecting to the database and found that I used localhost when connecting to the database. I changed it to 127.0.0.1 and tested again. I found that the response time was greatly shortened.

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