Ajax in JavaScript to pass to PHP

**blsn** · 01-07-2013, 09:28 AM

I’m using radio buttons (‘countries’) to open dropdown-box of its corresponding ‘cities’.
The variable ‘radioPressed’ detects the selected radio button and I need to pass its value inside my JavaScript to a PHP, as follows:

Code:

<script>
  var radioPressed = 123;
  <?php $what_is_myVar = radioPressed ; ?>
</script>

Since the solution can be complicated, I would ask to receive an advice only regarding the main steps of how to pass the value of 'radioPressed' into $what_is_myVar

Thanks a lot for any assistance,

**cbVision** · 01-07-2013, 10:07 AM

Here's an example. I've used "x" instead of radioPressed for the variable.

Code:

<!doctype html>

<html>
	<head>
		<meta http-equiv="content-type" content="text/html; charset=utf-8" />
		<title>Title</title>
		<meta name="language" content="en" />  
		<script type="text/javascript">
			//<![CDATA[  
				function passVariable(){
				
					// set your variable
					var x = '123';
					
					// get the current url and append your variable
					var url = document.location.href + '?x=' + x;
					
					// to prevent looping, check to make sure your current url contains a common string
					var exists = document.location.href.indexOf('?x=');
					if(exists < 0){
						// redirect passing your variable in
						window.location = url;
					}
					
				}
			//]]> 
		</script>
	</head>
	<body onload="passVariable()">
		<?php echo $_REQUEST['x']; ?>
	</body>
</html>

**blsn** · 01-07-2013, 11:40 AM

Thanks very much for your professional reply, works perfect but I need to have the PHP variable inside JavaScript, because the PHP code for opening the dropdown-box of matching cities is inside the JavaScript (see below my working script):

Code:

<script type="text/javascript">
$(document).ready(function(){
  $('#locationTree input:radio').change(function() {
    var radioPressed = $('input:radio[name=Region]:checked').val();

    if(radioPressed == 123) {
      var listCities = $("select[name='City']");
      <?php View::newInstance()->_exportVariableToView(123); ?>
      		<?php while(has_list_cities()) { ?>
        	$("<option><?php echo list_city_name(); ?></option>").appendTo(listCities);
      <?php } ?>                
    } 

  });   
});
</script>

In the code above I need to use $_REQUEST['x'] as follows:
<?php View::newInstance()->_exportVariableToView($_REQUEST['x']); ?>

Is there any way to get the PHP variable inside JavaScript?

Your help is greatly appreciated,

Thread: Ajax in JavaScript to pass to PHP

Thread Tools

Display

Ajax in JavaScript to pass to PHP

Thread Information

Users Browsing this Thread

Tags for this Thread

Bookmarks

Bookmarks

Posting Permissions