使用PHP和HTML表编辑CSV数据

Question

I have a CSV file that contains many data.

I use PHP to read and view it in WEB. I need to have a functionality like ADD, EDIT and DELETE . I already done the ADD using the a or append . I will add data in HTML Table and automatically it will add also in CSV file. I didn't use database here.

My problem now is the EDIT. What if i want to edit some data in CSV file using the HTML Table and like the ADD i want to automatically update it to my CSV file. How can i do that?

I already tried the w, w+, r+ but it didn't work. By the way I am using CODEIGNITER here.

Thank you in advance for the help.

Answer 1

I would keep the logic on server and do all the csv rendering eventdriven. Here you have a good csv lib: https://github.com/goodby/csv

So the process would be something like this:

• Client: Load csv preformated (via php) from server and display in html
• Client: Do MVVM bindings etc.
• Client: If an event is called (like add, update etc.) send eventrequest to server
• Server: Recieve event -> Process (with transactions if needed) -> reformat csv, save it and send back to client
• Client: Retrieve and apply MvvM bindings

Otherwise you need redundant csv logic in client and server whats not a fine approach. Do you know what I mean or should I do you an example?

The csv library supports complex csv binding and easy appending like:

$csv = new parseCSV();
$csv->parse('yourcsv.csv');
$csv->data[1] = array('updatekey' => 'new Value');
$csv->save();

Client side example:

//retrieve your csv (view rendered or async with ajax
var csv;

var mutableDataArray = $.csv.toArray(csv);

//do manipulation here
//for example
mutableDataArray[0].name = 'A new name to first record';

//serialize back
var newCsv = "";
for(var i in mutableDataArray) {
    var data = mutableDataArray[i].join(",");
    newCsv += i < mutableDataArray[i].length ? data + "\n" : data;
}

//do something with newCsv