Javascript计算脚本以计算表单输入值，然后另存为page2.php的隐藏输入

Question

So ive been spending the last week trying to figure out what im doing wrong.. i have tried to use several other scripts posted to other stack overflow users but can not seem to get anything to do what i need it to do, im still learning html, php and java script so everything is taking me a little while, so any help, advice or input is greatly appreciated.

So in my form i have several input fields that are selection fields, here is some for example:

                          </div>
                            <div class="form-field">
                              <label class="frm">*Approx Property Value</label>
                              <select name="fldAPV" title="Approx_Property_Value" id="fldAPV" class="form-action select-details">
                              <option value="100" selected="selected">Select value</option>
                              <option value="100">£0 - £100,000</option>
                              <option value="200">£100,001 - £200,000</option>
                              <option value="300">£200,001 - £300,000</option>
                              <option value="400">£300,001 - £400,000</option>
                              <option value="500">£400,001 - £500,000</option>
                              <option value="600">£500,001 - £600,000</option>
                              <option value="700">£600,001 - £700,000</option>
                              <option value="800">£700,001 - £800,000</option>
                              <option value="9000">£800,001 - £900,000</option>
                              <option value="1Million">£900,001 - £1,000,000</option>
                              </select>
                          </div>
                            <div class="form-field">
                              <label class="frm">*Number of Bedrooms</label>
                              <select name="fldNOBEDS2" title="Number_Of_Bedrooms" id="fldNOBEDS2" class="form-action select-details">
                                <option value="Not_Sure" selected="selected">I'm Not Sure</option>
                                <option value="1">1 Bedroom</option>
                                <option value="2">2 Bedrooms</option>
                                <option value="3">3 Bedrooms</option>
                                <option value="4">4 Bedrooms</option>
                                <option value="5">5 Bedrooms</option>
                                <option value="6">6 Bedrooms</option>
                                <option value="7">7 Bedrooms</option>
                                <option value="8+">8 Bedrooms +</option>
                              </select>
                            </div>                              
                            <div class="form-field">
                                <label class="frm">*Reason for Survey</label>   
                              <select name="fldRFS" title="Reason for Survey" id="fldRFS" class="form-action select-details">
     <option value="Not-Sure" selected="selected">Not Sure</option>
      <option value="Selling">Selling</option>
      <option value="Buying">Buying</option>
      <option value="Other-Reason">Other Reason</option>
  </select>

Now what i am trying to achieve is to have a javascript that will calculate the input value on each field the user selects his/hers answer.. My initial thoughts was to do it with each value="" having a default price value so for example the reason for survey fields, instead of saying "Not-Sure" or "Buying" they will say "50" or "100" to represent the cost of the service.

Is it possible to have a script that would understand code like this for example: Buying

The reason i say this is i am hoping the value's don't make things confusing, if not then i am happy to use the value="50" for example to determine what the overall cost of the service will be. I guess its the client basically putting together their own package.

The most important part of the script is to make the calculation hidden, so when clicking (View Quote) the form will submit the data either by $_GET or $_POST to page2.php where the client can view their quoted price.

I really hope i have not confused everyone! i see people post very small posts and they seem to get it on the head in one, i can not stress enough i am still learning and we all started somewhere :) This is for my own personal website and one hopes some kind experienced member can help me out, anything is much appreciated as i have spent 6 days trying to figure this out, Thanks!

King Regards

Answer 1

PHP on page2.php:

<?php 

If(isset($_POST['submit'])){
    $Quote = $_POST['fldST'] + $_POST['fldAPV'] //... For all nummeric Fields

    Switch ($_POST['fldPropertyType']){ 
     /* Use the Switch Statement if you want to compare the same variable 
        (or expression) with   many different values, and execute a different piece of code  
        depending on which value it equals to.      */

        case 'Semi': 
           $Quote  = $Quote + 20; //Replace 20 wit you're Value
        case 'Terraced': 
           $Quote  = $Quote + 50;
        //... For all cases
    }

    //Other Code and Page Content
    echo $Quote;
}
else{
  //ERROR Page was accessed without filling the form in.
}

?>

I hope this gives you an good Idea how to do it. Not every Client has Javascript enabeld and you don't know about their Maschine Performance. ist the better way to calculate via PHP.

Importend: NEVER echo/print/use POST/GET Variables direktly! Thats a big leck of Security. Always Filter your User Inputs to prevent Cross-Site-Scripting (XSS) http://phpsec.org/projects/guide/2.html http://resources.infosecinstitute.com/website-hacking-part-vi-input-validation-filtering-php/ http://phpsec.org/projects/guide/1.html#1.4.3

<---------------------------------------------- Update ----------------------------------->

When using the code above, Dreamweaver is saying that

Switch ($_POST['fldPropertyType']){ 

has a syntax error. Would this affect the script running before I add all the values or is it something simple to rectify?

Thanks