A simple calculator using variables .
<?php $var1 = $_POST['var1']; $var2 = $_POST['var2']; $var3 = $_POST['var3']; ?> <html> <head> <style type="text/css"> </style> <title>VisualCoders.Com - Calculator</title> </head> <body> <div id="main"> <h2>VC Calculator</h2> <?php if (!isset($_POST['submit'])) { ?> <form method="post" action="<?php echo $PHP_SELF;?>"> <input type="text" name="var1" maxlength="18" class="textbox" /> <input type="text" name="var2" maxlength="1" value="X" class="textbox2" /> <input type="text" name="var3" maxlength="18" class="textbox" /><br /><br /> <input type="submit" value="submit" name="submit"> </form> <?php } else { ?> <?php echo "Your result is:<br /><br />"; if ($var2=="+") { $sum=$var1 + $var3; echo "<form> <input type='text' name='var1' maxlength='18' class='textbox' value='".$var1."' /> <input type='text' name='var2' maxlength='1' value='".$var2."' class='textbox2' /> <input type='text' name='var3' maxlength='18' class='textbox' value='".$var3."' /><br /><br /> <input type='text' name='var2' maxlength='1' value='=' class='textbox2' /><br /><br /> <input type='text' name='var3' maxlength='18' class='textbox' value='".$sum."' /><br /> </form><br /><br /><a href='index.php'>Calculate Again</a>"; } elseif ($var2=="-") { $sum=$var1 - $var3; echo " <form> <input type='text' name='var1' maxlength='18' class='textbox' value='".$var1."' /> <input type='text' name='var2' maxlength='1' value='".$var2."' class='textbox2' /> <input type='text' name='var3' maxlength='18' class='textbox' value='".$var3."' /><br /><br /> <input type='text' name='var2' maxlength='1' value='=' class='textbox2' /><br /><br /> <input type='text' name='var3' maxlength='18' class='textbox' value='".$sum."' /><br /> </form><br /><br /><a href='index.php'>Calculate Again</a>"; } elseif ($var2=="/") { $sum=$var1 / $var3; echo " <form> <input type='text' name='var1' maxlength='18' class='textbox' value='".$var1."' /> <input type='text' name='var2' maxlength='1' value='".$var2."' class='textbox2' /> <input type='text' name='var3' maxlength='18' class='textbox' value='".$var3."' /><br /><br /> <input type='text' name='var2' maxlength='1' value='=' class='textbox2' /><br /><br /> <input type='text' name='var3' maxlength='18' class='textbox' value='".$sum."' /><br /> </form><br /><br /><a href='index.php'>Calculate Again</a>"; } elseif ($var2=="*") { $sum=$var1 * $var3; echo " <form> <input type='text' name='var1' maxlength='18' class='textbox' value='".$var1."' /> <input type='text' name='var2' maxlength='1' value='".$var2."' class='textbox2' /> <input type='text' name='var3' maxlength='18' class='textbox' value='".$var3."' /><br /><br /> <input type='text' name='var2' maxlength='1' value='=' class='textbox2' /><br /><br /> <input type='text' name='var3' maxlength='18' class='textbox' value='".$sum."' /><br /> </form><br /><br /><a href='index.php'>Calculate Again</a>"; } else { echo "Invalid operation. Valid operations are (+,-,/,*).<br /><a href='index.php'>Calculate Again</a>"; } echo "<br /><br />"; ?> <?php } ?> <div id="copyright"> Made by <a href="http://www.visualcoders.com">VisualCoders</a>. </div> </body> </html>You also need to download the images for the textbox fields.
Edited by BigStacks077, 02 August 2009 - 03:53 AM.