PHP: Write comma to csv file

Question

I've got a form which submits data to a csv file. When a user inputs a comma to a field, it destroys my csv structure. I want to convert inputted commas so that they can get displayed as a character.

I tried this:

$_POST["field"] = str_replace(",", "','", $_POST["field"]);

Answer 1

Use html encoding for instant relief , but still my recommendation to use phpExcel

$comma="&#44";
$_POST["field"] = str_replace(",", $comma, $_POST["field"]);