How to call functions in other PHP files? - php

Question

I am trying to call a function from one file to another in PHP, however, I am getting the following error:
Fatal error: Call to undefined method SQLite3::print_model_query_form()
I have two files. The first - dbfunctions.php contains the method print_model_query_form().
The second file query_models contains the following code:
include_once("functions/dbfunctions.php");
$db = new SQLite3('D:\xampp\sim\htdocs\dis_sqlite_database\disSQL3.db');
print $db->print_model_query_form("query_models.php");
The function looks a little like this:
function print_model_query_form($action, $current_values = 0){
$db = new SQLite3('D:\xampp\sim\htdocs\dis_sqlite_database\disSQL3.db');
if($current_values){
// set to previous values.
}else{
// get POST values.
}
// Code to print query form.
}
Thanks in advance for any help.

Answer 1

Since you only hit fatal error on 3rd line, $db should be instantiated successfully. So, the issue should be the print_model_query_form method.
Referring to PHP:SQLite3 - Manual
, there is no such built in method called print_model_query_form.
[Edit 1]
Try to use require_once instead of include_once to make sure you have included dbfunctions.php successfully.
[Edit 2]
Check If you are using PHP's built in SQLite3 class (check your php.ini for extension=php_sqlite3.dll or extension=php_sqlite3.so).
If this is the case, check your dbfunctions.php for:-
class Something
new SQLite3
function print_model_query_form
If all the above exists then you should replace your 2nd line with,
$db = new Something(..);
Note: It would be better if you can show dbfunctions.php instead or letting us make assumptions based on guessing.