Submit the form at remote server from own server

Looking for solution to the situation below.

1.      A form on the remote server accepts employee id (emp_id) and returns the employee details on submit.

2.      In my application I have the textbox where user enters the emp_id and when clicks submit,it should programmatically submit the remote server form with parameters emp_id entered at my app page.

3.      I am looking for the way to call the remote server form and pre populate emp_id and submit it to the remote server. The response I get form remote server will be captured and shown to the user.

4.      I have tried to post the emp_id to the action of the remote server form,but that could not be done as they blocked such access,so only option I left with is to fill their form which I decided to do programmatically with ajax.I can't render remote form directly as there are many more fields in that form along with emp_id.

Please help me to solve this.
JsandeepAsked:
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Ray PaseurCommented:
fill their form which I decided to do programmatically with ajax.
It will be easier if you use PHP.  This is a research project, not a question with any succinct answer, and since we do not have the URL, we cannot see what you might need to do with the HTML, but here is the general strategy you need to use.

1. GET PERMISSION TO ACCESS THEIR DATA THIS WAY.  They are the publishers and they own the data.  If they want you to access it in an automated fashion, they will give permission.  Get this in writing so there can be no question about it.

2. Read the HTML document that contains the remote server form.

3. Parse the HTML to isolate all of the data elements that must be returned to make the HTTP request to the remote server.

4. Build the raw HTTP query string.

5. Use cURL to make the HTTP POST request to the remote server.  Your script must act like a well-behaved web browser, accepting and returning cookies, and following redirects.

6. Read the response from the remote server.

7. Parse the HTML to isolate the data elements you want from the response document.

In my experience, it can take the better part of a day to get something like this working.  And that's after you get permission from the publisher!  Best of luck with the project, ~Ray

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