Array Manipulation , allowing only numeric entries in Text field

[ajd335]

Hi all,
I have one webpage in which people can order books online.
i have one array - book , in which i have stored all different types of books.
Now, I dont want the user to order any garbage ( just numerical entry and not alphabetics ) .
How can I do so ??
I have used following code , but dint work proper

if(isset($_POST['books']) ) {
$input = $_POST['books'];
foreach($input as $input1)
{
    if(!(ereg("^[0-9]+$",$input1))) die ('Please enter numeric values ') ;
}
}
 

in Above , I want to check for all the entries of books , whether the value entered is numeric or not....
But I guess I am not populating array properly , So how can I do so ??

[hsriat]

Check your $_POST variable.[php]echo "<pre>";
print_r($_POST);
echo "</pre>";[/php]

And use is_int.[php]if (!is_int($input1)) die ('error.... .. ');[/php]

[ajd335]

Check your $_POST variable.[php]echo "<pre>";
print_r($_POST);
echo "</pre>";[/php]

And use is_int.[php]if (!is_int($input1)) die ('error.... .. ');[/php]

Hey Hsriat,
When i code echo "<pre>" ........echo "</pre>"
i got following O/P

<pre>Array
(
    [customername] => 
    [email] => 
    [books] => Array
        (
            [book1] => 22
            [book2] => 
        )
 
    [enroll] => Array
        (
            [s1] => 
            [s2] => 
        )
    [comments] => 
 

but , e'time it goes to die portion only even if i have provided numeric values...( also in the code that you have given )
Thanks for your help Hsriat

[hsriat]

I see that $_POST[books][book2] is empty. Perhaps, this is causing the problem.
There might be something wrong with your form HTML.

Post the HTML part of the form being used.

[ajd335]

I see that $_POST[books][book2] is empty. Perhaps, this is causing the problem.
There might be something wrong with your form HTML.

Post the HTML part of the form being used.

Hi Hsriat ,
book2 field is empty as I have not provided ( i have not ordered that book)..I just want to order book1 .....So the numeric value is number of orders made...And i have to check that numbers only whether they are numerical or not , as no one can write some alphabetics in that field..

Thanks,

[hsriat]

Ok, for that, we can add some code to the PHP side, but I would suggest you to make a change in the form HTML, so that only that book id is posted which is selected, not the unselected ones.

How are you selecting the books?. Checkbox or what?

[ajd335]

Ok, for that, we can add some code to the PHP side, but I would suggest you to make a change in the form HTML, so that only that book id is posted which is selected, not the unselected ones.

How are you selecting the books?. Checkbox or what?

Hi hsriat,

Small book, Volume I</td>
<td align="center">$70x <input type="text" name="books[book1]"
size="2" /></td>
 

user can enter the quantity of book1 in books[book1] text box..or they can leave it empty if they dont wnat book1 and want book2 ...book3....and so on
hope I made it clear.
and ya , the only book selected are shown in the final order-made page.
the array i just show you to have an Idea.
Thnaks

[hsriat]

Remove book1 etc from withing the square braces. Let it be books[] in each input, and try again.

[ajd335]

Hey hsriat,
I think the way I am approaching the array book is not valid ,
As

 foreach($_POST['books']  as $input1)
{
echo $input1 ;
/* if(!(ereg("^[0-9]+$",$input1)))
{
//  die ('Please enter numeric values in the Quantity fields') ;
} */
}
 

i have just commented out the if statement n just checked the values of input1 , its just an variable seems(not array) as i have selected two books 11 ,22 quntity each,
input1 shows me 1122 as the value..Is it causing some problem,
because when i used above code for all the single entry i.e

 if(isset($_POST['books']['book1']) ) { $input = $_POST['books']['book1'];
if(!(ereg("^[0-9]+$",$input)))
{ die ('Please enter numeric values in the Quantity fields') ; }}
 

it gives me perfect desire answer..
So may be some problem with array manipulation ...what you suggest??

[ajd335]

Hi Hsriat,
Removing the book1 and ... options may not be proper ,as we have huge number of coding after that..so is there any other way ?

[hsriat]

[php]$selected_books = array();
foreach ($_POST['books'] as $input)
{
if (is_int($input))
array_push($input, $selected_books);
elseif ($input != "")
die ('...error...');
}
//$selected_books contains the array of your required books.[/php]

Try this...

[ajd335]

[php]$selected_books = array();
foreach ($_POST['books'] as $input)
{
if (is_int($input))
array_push($input, $selected_books);
elseif ($input != "")
die ('...error...');
}
//$selected_books contains the array of your required books.[/php]

Try this...

Hi hsriat,
Thanks for the help...But i want to discard the whole order if one has entered any alphabetics in that text box
The above code does not give me any answer.
Thanks,

[ajd335]

hey Hsriate,
The problem is solved now..
Thanks ..

[hsriat]

But i want to discard the whole order if one has entered any alphabetics in that text box

That's what it is doing!

Didn't you try it?

[hsriat]

hey Hsriat,
The problem is solved now..
Thanks ..

You are welcome.

[ajd335]

That's what it is doing!

Didn't you try it?

Yeah , I do try that, but IT dint give me any answer..
But i have taken two dimensional array and compared it.n it worked !!