Getting a PHP variable in jQuery

Question

So I have this:

<?php
 echo '
  <script>
$(function(){
   $("a#yeah").click(function(){
           $.ajax({
        url: "ajax.php?action=yeah&id='.$id.'",
        success: function(html){
         $("a#yeah").html("your cool")
                   }
     })
   })


})</script>';

?>

basically I am using the PHP variable $id wich can be find in the document, how could i get this same variable but without echoing the jQuery(so i could keep my editor syntax highlight in the Javascript part)?

Answer 1

You can add the php inline like:
<script> var myVar = <?php echo $phpVar; ?>; </script>

Answer 2

never echo any client side code - just type it as is.
PHP especially good in this http://www.php.net/manual/en/language.basic-syntax.phpmode.php

  <script>
$(function(){
   $("a#yeah").click(function(){
           $.ajax({
        url: "ajax.php?action=yeah&id=<?php echo $id?>",
        success: function(html){
         $("a#yeah").html("your cool")
                   }
     })
   })


})</script>

Answer 3

Just echo around the variable, as that appears to be the only piece requiring processing:

      ...stuff...
      url: "ajax.php?action=yeah&id=<?=$id?>",
      ...more stuff...

If your server doesn't have short_open_tag enabled, then <?php echo $id; ?>