help with form and PHP?

danacton

Hello,

I have the following code and I'm trying to get the first two array returns to print out the numbers to the page.

example: 3+5=

the problem I'm having is that it's printing out literally, that is, it's outputting:

Array ['number1'] + Array ['number2'] =8
when I use the radio button in the form option for addtion.

I can't seem to get the values out of the first two array values - well, here is the code:

<?php
error_reporting (E_ERROR | E_WARNING |E_PARSE);
if ( $_GET ['op'] == "add" ) {  echo " $_GET ['number1'] + $_GET ['number2'] =";  echo $_GET ['number1'] + $_GET ['number2'];}
if ( $_GET ['op'] == "sub" ) {  echo " $_GET ['number1'] - $_GET ['number2'] ";  echo $_GET ['number1'] - $_GET ['number2'];}
if ( $_GET ['op'] == "mul" ) {  echo " $_GET ['number1'] * $_GET ['number2'] ";  echo $_GET ['number1'] * $_GET ['number2'];}
if ( $_GET ['op'] == "div" ) {  echo " $_GET ['number1'] / $_GET ['number2'] ";  echo $_GET ['number1'] / $_GET ['number2'];}
?>

And here is the HTML code:

<html>
<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
</head>

<body>
<form method="get" action="basicAction.php">
Enter Number <input type="text" name="number1"><br> 
Enter Number <input type="text" name="number2"><br><br>  

<b>Choose the operation</b><br><br>
<input type="radio" name="op" value="add" checked>
Addition<br> <input type="radio" name="op" value="sub">
Subtraction<br> <input type="radio" name="op" value="mul">
Multiplication<br> <input type="radio" name="op" value="div">
Division<br> <input type="submit" name="Submit" value="Submit">
</form>

</body>
</html>

kevinc

Try this:

<?php 
error_reporting (E_ERROR | E_WARNING |E_PARSE); 
if ( $_GET ['op'] == "add" ) {  echo $_GET ['number1'] ." + ". $_GET ['number2'] ." = ";  echo ($_GET ['number1'] + $_GET ['number2']);} 
if ( $_GET ['op'] == "sub" ) {  echo $_GET ['number1'] ." - ". $_GET ['number2'] ." = ";  echo ($_GET ['number1'] - $_GET ['number2']);} 
if ( $_GET ['op'] == "mul" ) {  echo $_GET ['number1'] ." * ". $_GET ['number2'] ." = ";  echo ($_GET ['number1'] * $_GET ['number2']);} 
if ( $_GET ['op'] == "div" ) {  echo $_GET ['number1'] ." / ". $_GET ['number2'] ." = ";  echo ($_GET ['number1'] / $_GET ['number2']);} 
?>

Also, use indentation and spacing 🙂

Hope it helps,
Kevin

BSTRhino

Just to point out, PHP has kinda got a trick that seems to trip up newbies.

Your line of code:

echo " $_GET ['number1'] + $_GET ['number2'] ="

Should actually be:

echo " $_GET [number1] + $_GET [number2] ="

Whenever you refer to array items inside a string (not outside a string) you must leave off the quotes. So inside a string, it's not $GET['number'] because that will never work. It should be $GET[number]. Just remember this is only for inside a string. Outside a string the quotes should still be there.