Increment my variable in a database with UPDATE in PHP

Question

I get the variable \'stock\' from my database. I would like increment my variable with an update with this code:

$stock = $_POST[\'stock\']

$nom = \'salade\';
$         


        

Answer 1

You can use like this for variable in text query.

$req= ("UPDATE ingredients SET stock='".($stock+1)."' WHERE nom = :nom;");