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Editor to share with you how to deal with PHP form submission controls with a period (.) Will be transformed into an underscore (_) problem, I believe that most people do not know much about it, so share this article for your reference, I hope you will learn a lot after reading this article, let's learn about it!

Recently, when I was working on a company project, I found a strange problem. When I submitted a normal form, I found that I could not get the submitted value normally. This discovery inevitably made me confused at the beginning. At first, I thought that there was something wrong with my service and could not write to the database normally. Later, I detected the SQL statement and found that the problem actually appeared in obtaining data. The data obtained turned out to be empty. Later, a debugging found that all the variables originally submitted to the backend were no longer expected variables and were transformed by PHP.

The test code is provided as follows:

Test form submission

Name:

Password:

QQ:

Address:

Telephone:

Gender: male and female

Commit

Code example 1

The results after running are as follows:

Figure 1

As you can see, all the things I have in the control. Number, are converted into _ underscore by the backend, in order to test some other symbols, so do the above test, so far, only the period (.) Will be converted to an underscore (_), so when I take it for granted that I use info.name to access the backend, I can't find it, because it has actually been converted to info_name.

The above is all the contents of this article entitled "how to deal with the problem that the PHP form submission control name contains a period (.) will be converted to an underscore (_)". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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