Wrapping Javascript with php

jediman

Hi all. Figured out how to do a dynamic field adding thing, however, i really need to do it with php. Unless of course theres a way to have javascript do the same kinds of mysql stuff that php can.

But, i need to really assign variables and such.

Question: can i have like name2 or a secondary name for a text field?

Question: can I use the php variables as names inside the js successfully?

Question: can i do a submit thing like inside an if($submit) to do the stuff i need to when the form is done, because i really dont want it passing to another form, since its better to do some looping and such.

Answers?

renaun

Your post was hard to follow.

Do you understand that JS is client side and that PHP is server side? They can't talk to each other directly. But PHP can output dynamic JS that then can interact with that Client side page. Which then can set certain HTML that could be used on the PHP side.

Maybe repost with a simple question with an example.

batman

Answer 1 ).
No, each text field can only have one name assigned to it.

Answer 2 ).
I believe so. Something like:

$var = "HELLO!";

echo "<script language='javascript'>";
echo "use javascript here to print out $var";
echo "</script>";

Answer 3 ).
Not sure what you mean, but my answer is yes (if I understand what you want).

<?
if(isset($submit))
{
//Do what you want if submit is set
}
else
{
// Do what you want here if submit is not set
}
?>

<input type="submit" name="Submit" value="Submit">

Like renaun said, your post is a little confusing, so I dont know if what I even told you corresponds to what your questions were or not.

Hope that works for 'ya,

jediman

Honestly I am not sure what is confusing about my post, but oh well. And yes that did answer my one question. And yes I do realize that php is server side and javascript is client side.

Let me explain a bit further.
Right now I want to add in dynamic text fields for one thing. I have a javascript which does this, not a problem. What I have been doing with php is doing something like

if($post)
{
blah blah do stuff when the user clicks the submit button
}
else
{
display the page here (either by doing a ?> and then html or everything inside already)
}

I just want to be sure I can do the same with the js inbeded. I dont want to have in my http headers up top stuff like name=&name= , etc etc. I dont want to pass variables in the header like that, i want them actually stored in normal php variables as such, and then when the button to submit things are done, a loop occurs where it posts the stuff entered into each field and any of the created dynamic fields, and for each one will make a new field in a table in a mysql db (which I can do no problem). I want to be sure I will be able to loop over each entered thing, and input everything as needed.

Thats really my question more or less.

also, anyone know why after altering a table, and then doing a mysql_close() and then going, and in the same page after that opening a new mysql connection and inserting data, etc, that it would give me an error (and its prolly not exact) returned values not equal to what was just gotten or something along that line? Kinda weird. I think i can do away with it by inserting the static data first and then the new fields but I thought I had tried that and ended up with the same error but who knows 😛

renaun

Thanks for explaining things, it make sense now.

The php code you need (> PHP 4.2.0):

//  Set your HTML <form> tag attribute 'method' to equal
//  <form method="post">
....
foreach ($_POST as $var_name => $var_value)
{
    // Each input tag with a id or name attribute on the HTML page  

    //   will have a $var_name and $var_value pair.
    // Handle which dynamic values you want from here
    echo $var_name . '=' . $var_value;
}
....

I guess another way to do this is when you dynamically create the HTML tags in JS you give the tags a name that counts like 'txtbox'+i (txtbox0, txtbox1, etc...) Then in the PHP code you could do something like this:

....
$i = 0;
while(isset($_POST['txtbox'.$i)
{
   // Do code here $_POST['txtbox'.$i]
   $i++;
}

On the mysql issue. Try this. Dont close the connection and use it for both inserts/updates.

jediman

Thank you much 🙂
Im so glad theres people around who can give good insight on issues such as these 🙂