how to set time limit for loading the result?

[venkat6134]

Hi all,
I have a form,
in which i used to display the select box, at the time of loading the page..
based on the selection of this, i want to populate another select box by sending the query to the server...(this is by using ajax).

But, i want to check the time to display the second select box, and first selections was made..
The diff b/w these process will reach say 30 sec, it will show the message?

how to implement it...
or is there any other way to do this?

[StarLion]

You'd have to use Javascript for this to be accurate (PHP can only count the time in operation, not in transit).

[venkat6134]

Thanking you,

what is the code, i want to write? and where it should be.
Because, i don't know much about javascript?

[StarLion]

I cant give specifics because i'm not sure how i'd do it exactly, but the logic would be something like... (in pseudocode)

var timerflag = false;
var count = 0;

function AJAXCall() {
 ......
 //All your normal AJAX stuff goes here
 count = 0;
 timerflag = true;
 startTimer();
}

function startTimer() {
  //Implement counter to count to 30, if it reaches 30, stop timer and output message
  //Counter should check timerflag to see if it needs to stop early.
}

function AJAXReceiveHandler() {
  .......
  //Normal AJAX handler to receive data
  timerflag = false;
}