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Editorial Team
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Asked: 2026-05-26T03:22:12+00:00

Initially,the $number = 0. After 1st time clicking Add button, the value becomes 10.

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Initially,the $number = 0. After 1st time clicking Add button, the value becomes 10. When 2nd time clicking, the value is changed to 20. then 3rd time is 30, 4th time 40.

Below is my code, is there anyone know how to fix it? Thanks!

<?php
      $number = 0;
      if(isset($_POST['add'])){

          $number = $number +10;
       }
?>
<html>
    <head>

    </head>
    <body>
        <form method="post" action="<?php echo $_SERVER['SCRIPT_NAME']; ?>">
            <?php echo $number; ?>
            <input type="submit" name="add" value="Add" />
        </form>
    </body>
</html>
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1 Answer

  1. Editorial Team
      <input type="hidden" value="<?php echo $number ?>" name="number" />

    Now change the $_POST[‘add’] to $_POST[‘number’]
    And $number = $_POST[‘number’] + 10;

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