Javascript interact with php?

Anon

hi,
my problem is this:
i must compile some text box when a user insert a identity code and this data are in a mysql database, how i can call a php function to compile text without reload the page?
sorry for my english and thanks for your help.

Massimo (Italy)

Anon

Not sure what you mean by "compile"... but - since PHP is a server side language, it can't do anything without reloading the page. perhaps if you explained you problem a little more, someone could offer more assistance.

Anon

sorry,
what I mean is to call a php function to take data from database and with this using javascript to update the content of a textbox without reload pages.
So how i can call a php script from js without load another pages and how to tranfer data from php to js?

sorry but my english is not my better quality! 😉

bye bye

Anon

in order for PHP and javascript to interact, you have to use PHP to print out every possible bit of information that the javascript will need. Once that is done, you can craft the javascript to take advantage of the information.

You just have to script the PHP to format the outputted text in the appropriate way.

remember that PHP can print just about anything - DB contents, regular text, form fields, javascript arrays, etc. Then you use javascript on the client end to manipulate it.

Anon

thanks for your information, but my problem is to change the data when an event occur, for example when the user insert the identity code I search in database and I compile all text box(name, surname, address, ecc...) with the right data.
is there a mothod to do this?

thank for you time, excuse me if I don't know to write exactly my problem.

Bye bye

Anon

Technically, yes, realistically, no - there is not a way to do this.

Technically, you could populate a javascript array with ALL your users through a SQL query and PHP script. Then, using javascript, you could do what you are saying without a reload.

realistically, because of the size (or potential size) of the number of users, that just isn't possible.

Optionally, you could use PHP to create a "self-processing form." To do this, you create a form and set the form action to basename($PHP_SELF). Then, after you enter the user_id, you can use that information to do a new query - pull the required info from the DB and populate the text fields in your form.

that work for you?

Anon

Hi!

Look on Microsoft.com. They've got a very well-crafted search page at msdn.microsoft.com. Once the user hits the Search button, an area below is populated with the results of the search.
This is of course a feature of Internet Explorer 5+, so you must be prepared to sacrifice compatibility for speed and "coolness".
But Craig is right, Javascript is a client-side language. You can only make it behave the way you want if you use latest DHTML tricks and data pulls or IFrames available in Internet Explorer.

Best regards,
Stas

Anon

hi, i thank you for your patience,
in your reply, you talk about self-processing form, i think that is the best solution, but can you tell me more about this with some lines of code, 'cause i don't know to do this.

bye Craig.

Anon

hmmm- you're going to need to do some gruntwork on this, but the basic idea is as I said:

"Optionally, you could use PHP to create a "self-processing form." To do this, you create a form and set the form action to basename($PHP_SELF). Then, after you enter the user_id, you can use that information to do a new query - pull the required info from the DB and populate the text fields in your form. "

1) make a form
2) set the form action as noted above
3) create functionality before the form that basically follows this logic:
if ($submit) {
// do the stuff you need to do
} else {
// print the form with no values
}

get the idea?

Anon

well, i think that this solution it's the better for me, I thank you very much for your support.
I'm glad to meet you.

Bye bye

Massimo