如何使用URL传递变量

Question

I am trying to pass 2 values via URL to another page. I know how to do this however I am taking one of the values from the result of select box. I am grabbing the selected value and storing it in a variable then attempting to post this variable in the URL.

option 1 is storing the selected value.

<select name = 'ADDITIONALINFO' id = 'ADDITIONALINFO'>
    <option value="1">Option 1</option>
      <option value="2">Option 2</option>
      <option value="3">Option 3</option>
      <option value="4">Option 4</option>
</select>

<script>
        var sel = document.getElementById("ADDITIONALINFO");

        sel.onchange = function()
        {
            var option1 = sel.options[sel.selectedIndex].text;
            alert(option1);
        };
        </script>

        <?php


        echo "<div class=\"add-button-quote\"><a href=\"/quotation/index.php?sku=" . $product->PR_SKU . "&OP_NAME=" . $option1 . "&OP_NAME2=" . $o->OP_NAME . "\">Get a Quotation</a></div>";

The problem Im having is when I click the button the URL it takes me too displays the $sku but not $option1.

If anyone can spot where Ive gone wrong I would really appreciate your advice. Thanks!

Answer 1

$option1 is not defined in PHP (it's a variable in JavaScript, right?) You can not mix up JS and php in that way ;)