php program help object expected

Beginners - Learning PHP
#1

hai

my code is like this

<?php function subtraction(){ $result =$value1+$value2; } ?> when i ran the program its ok.but i click the button error messagebox coming? what is the problem? can anybody guide me?
#2

Well, I going to guess at this since you didn’t give me any kind of a clue what kind of an error message you get, but I guessing it is a Javascript error.

onClick is used for javascript not php. Javascript is a client-side language where as php is a server-side language.

The only way to make this script work as you intend is to something like the following:

[php]<?php
$send = $_POST[‘send’];
if(isset($send) && $send == ‘Go’)
{
$result = $value1 + $value2;
}
else
{
?>







<?php } ?>[/php]

PS: I however did leave out the rest of $_POST[’’]. I figured you could add these in and should as Global Variables should NOT be turned on!

If you are having trouble even getting a simple form to submit data then I would highly recommend not even worrying about functions at this point. You need to get a good handle on what PHP is. Once you have this kind of understanding you should be able to understand what it can and can’t do.

#3

hai
Ragster thanks for ur help and guidance.
my problem is how to get the text field values locally ?
dont use the post method?
and how can we write actions for buttons in php like javascript functions?
any posibility ?

can u guide me

thanks in advance
bye
Manju

#4

First, I am not trying to be a jerk, but do you understand the difference between, server-side and client-side scripting?

This a very important understanding as it is at the core of php.

#5

yes i got the concept of server side and client side scripting.
php is server side scripting and java script is client side scripting.

thanks for ur help

#6

Ok, Sorry… I hope you didn’t take offense to my post. I am just trying to make sure people understand what they are doing so they don’t waste their time. :)

#7

Or ours :wink:

@Linuxhero:
PHP is a server-side language (go look that up on google) and JavaScript is a client-side language (hope you still have your google window open :wink:

The difference between SS and CS languages is so fundamental that you cannot mix them up.

For some pointers, google the following terms:

  • server-side script
  • client-side script
  • php form tutorial
  • php echo (or php print)
  • php global variables

And maybe:

  • php tutorial
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