how to make a php variable increase when clicking on an html button?

Rafael Cravcenco · Junho 15, 2024

Hello, I'm a beginner and I'm still learning how to work with variables
I would like to know how to make it so that when I click on the button, the variable and the text showing it increases, adding +1 to the value with each click. Can anybody help me??

My code looks like this (not sure about var_dump):

<!DOCTYPE html>
<html>
    <head>
        <title>Test PHP</title>
    </head>
    <body>
    <?php
    $var = 0;
    ?>

        <button onclick="<? var_dump(++$var); ?>"> click here </button>
    <?php
    echo $var
    ?>

    </body>
</html>

Frank K Hosaka · Junho 21, 2024

<?php
session_start();
if(!isset($_SESSION['var']))
{
    $_SESSION['var']=0;
}
if(isset($_GET['test']))
{
    $_SESSION['var']++;
}
?>
<form>
    <input type=submit name=test value=<?=$_SESSION['var']?> />
</form>

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how to make a php variable increase when clicking on an html button?

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Rafael Cravcenco

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