PHP code to convert a MySQL query to CSV [closed]

What is the most efficient way to convert a MySQL query to CSV in PHP please?

Writing data from my app to csv & upload it?

I wondered if it's possible to write some data to csv file in the documents path, or other convenient readable file. For example - i have a few text fields that i want the user to fill & then i want him to click "send" & after that the information will be written on a file that i could easily read & upload to my server. In my case i have an app that i want people to register for my members club, with first name, last name & phone number & i want to take this information & read it easily after is uploaded to my server. For testing i'm using my dropbox account as a server.

Splitting a CSV into an object with javascript/jquery

I have an ordered array which looks like this:-

Writing CSV file. myPackage.MyClass cannot be cast to java.lang.CharSequence

I need to write List<MyClass> myList into CSV file. In particular I need to write values . MyClass has the following implementation:

UTF-8 problems while reading CSV file with fgetcsv

I try to read a CSV and echo the content. But the content displays the characters wrong.