HTML and PHP question (not assinging any value)

[amit]

Hello group,

I have switched to linux and PHP so totally new to this field. Please
help me with my question. I have an HTML code which contains a
drop-down control on it using
<select name=selected_g roup>
<option> Gropu 1</option>
<option> Group 2</option>
and ...
</select>
<?php
$group = $_POST['selected_group '];
?>

meantime, I'm my php code using $group = $_POST['selected_group '] but
nothing will assinged to the $group variable. I tried different html
codes which were on web for learning purpose but didn't work out!
please let me know if you have any suggestions.

Thanks,
Amit

[Roy W. Andersen]

Re: HTML and PHP question (not assinging any value)

amit wrote:[color=blue]
> <select name=selected_g roup>
> <option> Gropu 1</option>
> <option> Group 2</option>
> and ...
> </select>[/color]

Each option needs to have a value assigned. The text between <option>
and </option> is only visual and is not used for the actual form-data
when submitting it to the server. Hence, the code quoted above will
submit an empty value for "selected_group " regardless of what's actually
selected.

This is how you should do it:

<select name="selected_ group">
<option value="Group 1">Group 1</option>
<option value="Group 2">Group 2</option>
</select>

This way, when the form is submitted, what you've defined in the
value-parameter is what is actually sent to the server.


Roy W. Andersen
--
ra at broadpark dot no / http://roy.skyggenesdal.org/

"Hey! What kind of party is this? There's no booze
and only one hooker!" - Bender, Futurama

[David Haynes]

Re: HTML and PHP question (not assinging any value)

amit wrote:[color=blue]
> Hello group,
>
> I have switched to linux and PHP so totally new to this field. Please
> help me with my question. I have an HTML code which contains a
> drop-down control on it using
> <select name=selected_g roup>
> <option> Gropu 1</option>
> <option> Group 2</option>
> and ...
> </select>
> <?php
> $group = $_POST['selected_group '];
> ?>
>
> meantime, I'm my php code using $group = $_POST['selected_group '] but
> nothing will assinged to the $group variable. I tried different html
> codes which were on web for learning purpose but didn't work out!
> please let me know if you have any suggestions.
>
> Thanks,
> Amit
>[/color]

The value of 'selected_group ' is only assigned to the $_POST value when
the form submit action is invoked and the form is using a POST method.

So:
1. is your <select> within a <form>?
2. does the <form> have method="POST"?
3. does the <form> also contain an <input type="submit"> or onchange= to
the select?

If not, $_POST['selected_group '] will not be set and $group will be empty.

-david-

[Tim Roberts]

Re: HTML and PHP question (not assinging any value)

"Roy W. Andersen" <roy-news@netgoth.or g> wrote:
[color=blue]
>amit wrote:[color=green]
>> <select name=selected_g roup>
>> <option> Gropu 1</option>
>> <option> Group 2</option>
>> and ...
>> </select>[/color]
>
>Each option needs to have a value assigned. The text between <option>
>and </option> is only visual and is not used for the actual form-data
>when submitting it to the server. Hence, the code quoted above will
>submit an empty value for "selected_group " regardless of what's actually
>selected.[/color]

Bzzzt, sorry, this is incorrect. If no "value" clause is specified, the
text between <option> and </option> becomes the value for that item.
[color=blue]
>This is how you should do it:
>
><select name="selected_ group">
> <option value="Group 1">Group 1</option>
> <option value="Group 2">Group 2</option>
></select>
>
>This way, when the form is submitted, what you've defined in the
>value-parameter is what is actually sent to the server.[/color]

Nope. The "value" clauses in your example are entirely unnecessary.
--
- Tim Roberts, timr@probo.com
Providenza & Boekelheide, Inc.