How to process mutiple forms using one page with functions? - php

Question

So you can include for example functions.php in your file and then you can use different functions in that page to validate user input.
But how can I process multiple forms using the same file?
Example:
include formprocessor.php
formprocessor would contain all the functions related to each form:
Form A action=formAfunction()
Form B action=formBfunction()
Form C action=formCfunction()
Can formprocessor.php contain a function specifically for handling each form?
Each form would have their own function to process their data.
If this is possible it is way more convenient than having a processor file for each form on a site. 10 forms 10 processing files?
Or 10 forms 1 processing file.

Answer 1

You can see an input type=hidden that contains a name for each form, then in your form processor, read the name that was submitted and go to the specific part of the code accordingly.

Answer 2

You could add a name to the submit button for each form in html
<form method='post' ... >
....
<input type='submit' name='formA' ...>
</form>
<form method='post' ... >
....
<input type='submit' name='formB' ...>
</form>
Then use something like this in your php code to handle it:
if(isset($_POST['formA'])){
formAfunction(); //handle formA
}elseif(isset($_POST['formB'])){
formBfunction(); //handle formB
} //.... etc

Answer 3

Have a hidden process inside your form. IE
<form id = "login" action = "calls.php" method = "POST">
<input id="process" name="process" type="hidden" value="loginpr">
<input type="submit">
</form>
<form id = "logout" action = "calls.php" method= "POST">
<input id="process" name="process" type="hidden" value="logoutpr">
<input type="submit>
</form>
Then you have your calls.php file which switches based off the the process called.
if(isset($_POST['process'])){
switch($_POST['process']) {
case 'loginpr':
loginfunction();
break;
case 'logoutpr':
logoutfunction();
break;
}
}
else { echo "The process is not linked within this form"; }
calls.php would be your formproccessor.php file