How can I increase data in a for loop in php?

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How can I increase data in a for loop in php?

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#1 by (0 votes)

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I have every time I click on add this data continues to increase, now I only get that every time I click is updated but does not save the previous php is the following

 <?php
 session_start();
 if(empty($_SESSION['producto'])){
  $_SESSION['producto']=array();   
  }
  // esto viene de js por trae el id del producto y la cantidad 
  ingresada
  if(isset($_GET['p'])){
   $_SESSION['producto']['id'] = $_GET['p']; 
  }
  if(isset($_GET['c'])){
   $_SESSION['producto']['can'] = $_GET['c']; 
  }
  //incremento i en 2 para que ponga en la misma linea la cantidad y el 
 id
for ($i=1; $i < count($_SESSION['producto']); $i+=2){

  $cab = $_SESSION['producto']['can'];
 $query = mysqli_query($conect,'SELECT * FROM Productos WHERE 
 id='.$_SESSION['producto']['id'].'');
    while ($fila = mysqli_fetch_array($query)) {


            echo '<tr>';
            echo '<td>'.$fila['Nombre'].'</td>';
            echo '<center><td>';

           echo '<center><input type="number" name="ja" class="la" 
         value="'.$cab.'""></center>';
            echo '</td></center>';

This I get with this

but as I say it does not let me increase data just put the data of the last click I give

php

asked by Vinicio Moya Almeida 29.10.2017 в 04:11

source

1 answer

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score 0 · Answer 1

I hope it helps you

if(empty($_SESSION['producto'])){
    $_SESSION['producto']=array();   
}

// esto viene de js por trae el id del producto y la cantidad ingresada
if(isset($_GET['p']) && isset($_GET['c']))
{
    // Si existe el producto incrementar la cantidad
    if(isset($_SESSION['producto'][$_GET['p']]))
    {
        $_SESSION['producto'][$_GET['p']] = $_SESSION['producto'][$_GET['p']] + (int)$_GET['c'];
    }
    // Si no existe asignar la cantidad obtenida
    else
    {
        $_SESSION['producto'][$_GET['p']] = (int)$_GET['c'];
    }
}

// Listar la session
foreach($_SESSION['producto'] as $producto => $cantidad){

    $query = mysqli_query($conect,'SELECT * FROM Productos WHERE id='.$producto.'');
    while ($fila = mysqli_fetch_array($query)) {
        echo '<tr>';
        echo '<td>'.$fila['Nombre'].'</td>';
        echo '<center><td>';
        echo '<center><input type="number" name="ja" class="la" value="'.$cantidad.'""></center>';
        echo '</td></center>';
    }
}