Form submission PHP form submission form name containing a period () will be converted into an underscore (_)

'; 
var_export( $_POST); 
} 
?> 


Code Example 1 
The result after running is as follows: 
Figure 1 
As you can see, all the . numbers I included in the control were converted into _Underscore, in order to test some other symbols, I did the above test. So far, I only found that the dot (.) will be converted into an underscore (_), so I took it for granted that I used info.name to access it in the backend. , it cannot be found because it has actually been converted into info_name. 
So when you use forms in the future, try not to use . in naming.
                
                
                

                    The above has introduced form submission. If the PHP form submission form name contains a period (), it will be converted into an underscore (_), including the content of form submission. I hope it will be helpful to friends who are interested in PHP tutorials.