ASSIGNMENT 1 - CALCULATOR

Hey guys,

Working on my calculator question for ass1.
im using text fields for Input of Operand1&2 and Answer.
After submitting the form id like the answer to populate in the Answer text field. . . is this possible? How?

been searching but not come up with anything. . .

Hi there

Echo the value inside the quotation marks of the value property like this:

Language: PHP
<input type="text" name="some_textbox" value="<?php echo $value_to_output; ?>" />

Ahh, thanks.

So i guess I would have to create another set of text fields then.
I was hoping to use the same Form Elements.

You could still use the same elements. Use cookies or hidden fields to help preserve information through page loads.

----------------------------------------------------------------------------------------

int get_random_number() {
return 4;
}

Using PHP code in the "VALUE" element/property works well. You can also review page 234 of the text book which relates to "Persisting User Data",
Jared

Thanks So much guys. im going to check that out.
il post my udpate soon.

Hi,
We have come back again, Happy new year to you all.

Dear fellow students,

Anyone, please e-mail me a copy of ICT3612 Tut_101 2013, my e-mail address: 39012182@mylife.unisa.ac.za

Thank You

Tut letters are copyrighted, so sending it on is an infringement.... If you are registered, you can download it from myUnisa...!

Hi Guys,

So, I managed to complete most of the calc.
I've now managed to get the Oper1, Oper2 & Result to display in the form elements.

Im having a problem however, with the SELECT list.
after I submit the Form, the correct Oper1, Oper2 and Result populate the Form elements. The Select Operator does not. it just defaults to the 1st, which is the "+".

Any idea what i should do?

iv tried this:
<select name="operators" value="<?php echo $operator; ?>" >
<option value="+">+</option>
<option value="-">-</option>
<option value="*">x</option>
<option value="/">/</option>
</select>

doesnt really work though.

Also having an issue when i enter a "0" in either operand. for some reason it takes the "0" as no value and throws my error to "Enter a value in the operand 1 or 2"

Being a bit tough here. Use FORMATTED code to post code...

how many times do I have to repeat this... how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...how many times do I have to repeat this...

Woops. . . Sorry Mac, I've never posted code online before. . . Lesson learned.

So, I managed to complete most of the calc.
I've now managed to get the Oper1, Oper2 & Result to display in the form elements.

Im having a problem however, with the SELECT list.
after I submit the Form, the correct Oper1, Oper2 and Result populate the Form elements. The Select Operator does not. it just defaults to the 1st, which is the "+".

Any idea what i should do?

Language: PHP
<select name="operators" value="<?php echo $operator; ?>" >
<option value="+">+</option>
<option value="-">-</option>
<option value="*">x</option>
<option value="/">/</option>
</select>

The tut letter explains how to post formatted code

Do not use symbols as the value of the option.

I dont understand.

Do you mean in the option's value attribute?
what should I use then?

Use words.

Brilliance!!! thanks Mac!!

Hi there,

Don't know if you solved your 0 problem yet... If not I had the same issue and got an answer.

You are probably using the same statement I had to test if the field is empty...

Language: PHP
If (!$_POST[';num1';])

rather use...

Language: PHP
If ($_POST{';num1';] = "")

For some reasom if u use not post it sees 0 as nothing, so rather use if empty string... It worked for me.

See here for beter handling on empty fields http://www.htmlcenter.com/blog/empty-and-isset-in-php/

Tnax Mac,

I will def try that code 2nite, u r the best lec @ UNISA.
Now I understand why !$_POST didn't work well with 0.

Hoping to make u proud again this year.

Hi Mac,

I did test the code from suggested site...
It worked beautifully just had to reajust rest of my code.

Thanx a mil

Hi Everyone,

Can anyone recommend a PHP IDE that is easy to learn how to use in a short space of Time ?

Please assist

@49912232 -mbux,

If its for the course IDE's are not allowed as I understand, n++ or something alike sould be used. (Mac will b able 2 tell the dif...)

4 now I'm sticking with n++.

If its for yourself: (I havn't tried any of these yet)

http://en.wikipedia.org/wiki/List_of_PHP_editors
http://stackoverflow.com/questions/116292/what-is-the-best-ide-for-php

No IDE"S that generate complete code is allowed..

learn the technology you feel comfortable with do not let other people confuse you with many technologies you have a brain of a human being not computer

for example with me the tools i use are
for editing i use PSPad works fine for me (dreamweaver was making me lazy and forget coding cause it generated code for me so i no longer wanna see it next to me)
for front-end i use twitter bootstrap (pushing swagg - recently being nominated for best web front-end toolkit in the world)
and back-end i code from scratch if i am in a hurry i use CodeIgniter Framework reason being it gives me the flexibility i need just saves me time and with it
i already learned the MVC software design pattern(not for unisa purposes)

Sorry to say this but CMS are crap to me Drupal,Joomla,Wordpress i dont have time to learn individual technologies reason being they are more focused in procedural approach than OOP
Trying to learn their plugins or edit template its mission impossible just try you will come and shake my hand i'm telling you

so choose your own tools carefully

matsoso K