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How do I add a calculator to my posts? (4 posts)

  1. Tom Kroscavage
    Member
    Posted 2 years ago #

    I would like to add a 2-stroke oil-gas mix calculator to a post. I've added the php-exec plug-in. what should the php code look like? I need to multiply the amount of galons by 128 and divide by the mixture like 50 (50:1)

    If someone could post a simple addition calculator that works with php-exec that would be very helpful to me.

  2. ClaytonJames
    Member
    Posted 2 years ago #

  3. Tom Kroscavage
    Member
    Posted 2 years ago #

    Every time I paste a calculator from the internet the form works then when I press the calculate button the browser navigates back to my home page.

  4. Tom Kroscavage
    Member
    Posted 2 years ago #

    Here is my code in a post

    <?php
    
    if($submit)
    {
       if($operator == '*')
       {
           echo $numa * $numb;
       } elseif($operator == '/')
       {
           echo $numa / $numb;
       } elseif($operator == '+')
       {
           echo $numa + $numb;
       } elseif($operator == '-')
       {
           echo $numa - $numb;
       }
    } else { ?>
    <form method="POST" action="<?php $_SERVER['PHP_SELF']; ?>">
     <input type="text" name="numa" size="10">
     <input type="text" name="operator" size="2">
     <input type="text" name="numb" size="10">
     <input type="submit" value="Calculate" name="submit">
    </form>
    <?php } ?>

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