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milena1520

Gostaria de Ajuda para Solucionar esse Código

Question

Teria que acumular os valores na variável, mostrando a soma acumulada.

Mas não está acumulando.

 

<html> <head> </head>
    <meta charset = "UTF-8"> 
      <body>
       <center>
       
<?php 

session_start();
    
?>

    <form method = "POST" action = "Exerc6.php"> <p> 
        
     <input type="number" name="num" value=""> <br>
     <input type="submit" name="button" value="Adicionar">
          
</center> </form> </body> </html>

 

<?php


//Definindo a variável 

 if(isset($_SESSION['num']))
  {
    $_SESSION['num'] = 0 ; 
  }
  
  if (isset($_POST['num']))
  {
    $num = $_POST['num'];
  }
   else
  {
    $num = 0;
  }
    
 if($num == 0)
   {
     echo'<p align ="center">';
     echo "Soma Acumulada: " .$_SESSION['num'];
   }
    else
    {
      $_SESSION['num'] += $num;
      echo'<p align ="center">';
      echo "Soma Acumulada: " .$_SESSION['num'];
    }
?>

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2 answers to this question

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Olá! troque
if(isset($_SESSION['num'])){
    $_SESSION['num'] = 0 ; 
  }
por
if(!isset($_SESSION['num'])){
    $_SESSION['num'] = 0 ; 
  }

A exclamaçãozinha ali irá verifica se não existe o índice 'num' na $_SESSION
se não existir, será iniciado com o valor zero

Edited by wash

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