PHP Add button malfunction -


i trying hard learn how create shop cart using php , seems me got stuck once more. time can not make "additional conditioning amount available in stock" work well. can me figure out wrong php code below?

if (isset($_get['add'])) {     $con = mysqli_connect("localhost", "noivaemd_etalhes", "password", "***") or die (mysqli_error());     $quantity = mysqli_query($con, "select id, quantity products id=".mysqli_real_escape_string($con, $_get['add']));     echo '<p>'.$quantity_row['quantity'];     while($quantity_row = mysqli_fletch_assoc ($quantity)) {         if ($quantity_row['quantity']!=$_session['cart_'.$_get['add']]) {             $_session['cart_'.$_get['add']]+='1';         }     } }

many things.

  1. you using mysqli, nice step mysql, you're still injecting values query. note escape_string not here because did not put quotes around value, meaning you're still wide open injections. learn parameterised queries.

  2. you misspelled fetch fletch.

  3. you using += string '1'. while php correct integer 1 via type coercion, it's still not thing writing because makes lack understanding.

these things visibly wrong code. if fixing these issues doesn't resolve problem, useful know error messages you're getting.


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