exibir2.php

<?php 
  session_start();

        if(!isset($_SESSION['carrinho'])){
            $_SESSION['carrinho'] = array();
        }

	       
        //adiciona produto
        
        if(isset($_GET['acao'])){
            
            //ADICIONAR CARRINHO
            if($_GET['acao'] == 'add'){
                $id = intval($_GET['id']);
                if(!isset($_SESSION['carrinho'][$id])){
                    $_SESSION['carrinho'][$id] = 1;
                }else{
                   $_SESSION['carrinho'][$id] += 1;
                }
            }
            
            //REMOVER CARRINHO
            if($_GET['acao'] == 'del'){
                $id = intval($_GET['id']);
                if(isset($_SESSION['carrinho'][$id])){
                    unset($_SESSION['carrinho'][$id]);
                }
            }
            
            //ALTERAR QUANTIDADE
            if($_GET['acao'] == 'up'){
                if(is_array($_POST['prod'])){
                    foreach($_POST['prod'] as $id => $qtd){
                        $id  = intval($id);
                        $qtd = intval($qtd);
                        if(!empty($qtd) || $qtd <> 0){
                            $_SESSION['carrinho'][$id] = $qtd;
                        }else{
                            unset($_SESSION['carrinho'][$id]);
                        }
                    }
                }
            }
        
        }
 
  
        
?>
<table width="90%" >
<div class="container">
    <div class="row">
        <div class="col-sm-12 col-md-10 col-md-offset-1">
		
		
		<form action="?pg=carrinho&acao=up" method="post">
		
		
		
            <table class="table table-hover">
                <thead>
                    <tr>
                        <th>Produto</th>
                        <th>Quantidade</th>
                        <th class="text-center">Valor</th>
                        <th class="text-center">Total</th>
                        <th></th>
                    </tr>
                </thead>
                <tbody>
                    <tr>
					
					<?php if(count($_SESSION['carrinho']) == 0){ ?> 
                             <tr>
                                <td colspan="5"><center>Não há produto no carrinho</center></td></tr><br/>
								<tr>
                        <td></td>
                        <td></td>
                        <td></td>
						<td></td>
                        <td>
						<a href ="?pg=produtos"><input type="button"  class="btn btn-default" value="Ir as Compras" /></a>
							
											
						
						</td>
                       
                    </tr>
                    <?php }else{
							$total = 0;
                                foreach($_SESSION['carrinho'] as $id => $qtd){
                                        $sql   = "SELECT *  FROM produtos WHERE id= '$id'";
                                        $qr    = mysql_query($sql) or die(mysql_error());
                                        $ln    = mysql_fetch_assoc($qr);
                                        
                                        $nome1  = $ln['nome'];
										$descricao =  $ln['descricao'];
                                        $preco = number_format($ln['preco'], 2, ',', '.');
                                        $sub   = number_format($ln['preco'] * $qtd, 2, ',', '.');
                                        
                                        $total += $ln['preco'] * $qtd;
										
                                        ?>

                    <?php for($i = 1; $i <= $qtd; $i++) {?>
                    <tr>
										
							<td class="col-sm-8 col-md-6">
                        <div class="media">
                            <a class="thumbnail pull-left" href="#"> <img class="media-object" src="http://icons.iconarchive.com/icons/custom-icon-design/flatastic-2/72/product-icon.png" style="width: 72px; height: 72px;"> </a>
                            <div class="media-body">
                                <h4 class="media-heading"><a href="#">'.$nome1.'</a></h4>
                                <h5 class="media-heading"> Descrição :    <a href="#">'.$descricao.'</a></h5>
                                
                            </div>
                        </div>
						</td>
                        <td class="col-sm-1 col-md-1" style="text-align: left;"><?php echo $i;?> </td>
                        <td class="col-sm-1 col-md-1 text-center"><strong>R$ <?php echo $preco; ?></strong></td>
                        <td class="col-sm-1 col-md-1 text-center"><strong>R$ <?php echo $sub; ?></strong></td>
                        <td class="col-sm-1 col-md-1">
						
						<a href ="?pg=carrinho&acao=del&id=<?php echo $id; ?>"><input type="button"  class="btn btn-danger" value="Remover" /></a>
						
						
						</td>
                    </tr> 
					
					<?php 	} //fecha o FOR	?>	

                    <?php   }   //fechao While?>  			
							
							
							
					<tr>
                        <td></td>
                        <td></td>
                        <td></td>
                        <td style="text-align: right;"><h4>Total:</h4></td>
                        <td class="text-right"><h4><strong> R$ <?php number_format($total, 2, ',', '.')?>  </strong></h4></td>
                    </tr>
					<tr>
                        <td></td>
                        <td></td>
                        <td></td>
                        <td>
						<a href ="?pg=produtos"><input type="button"  class="btn btn-default" value="Continuar comprando" /></a>
							
						<!--
                        <button type="button" class="btn btn-default">
                            <span class="glyphicon glyphicon-shopping-cart"></span> Continuar comprando
                        </button>-->
						
						
						
						</td>
                        <td>
                        <button type="button" class="btn btn-success">
                            Finalizar Pedido <span class="glyphicon glyphicon-play"></span>
                        </button></td>
                    </tr>
					
					<td colspan="5"><input type="submit"  class="btn btn-default" value="Atualizar Carrinho" /></td>
						
	
							
							
							
						<?php 	} 	?>
                        
					<!--<tr>
                        <td></td>
                        <td></td>
                        <td></td>
                        <td><h5>Subtotal</h5></td>
                        <td class="text-right"><h5><strong>$24.59</strong></h5></td>
                    </tr>-->
                    
                    
                </tbody>
            </table>
			
			</form>
        </div>
    </div>
</div>
</table>