Ajax将javascript变量发送到php

Question

I'm trying to send a javascript string variable from a javascript plugin of a program running in tomcat, to a php file hosted on apache (httpd on centOS) on the same physical machine.

Trying to send it using ajax and POST, and storing it as a variable on the php file.

I'm new to php

php:

<?php

    if($_POST['zone']){
        $zone=($_POST['zone']);
        echo $zone;
    }
?>

ajax call:

$.ajax({
    type: 'POST',
    url: 'urlofmyfile.php',//url of receiver file 
    data: {zone: zone}, //your data
    success: function(msg){console.log('Write succeeded' + msg);}, //callback when ajax request finishes
    dataType: 'jsonp' //text/json...
});

I initially got some errors about cross domain problems, then switch to jsonp as the dataType

Answer 1

I use $.post for this kind of request and use json output in PHP for better communication with JQuery. One more thing, you also need to check whether the value of zone is not empty or what!

in PHP Code

<?php
$output = array('status'=>true,'message'=>'');
if(!empty($_POST['zone']) && $_POST['zone']){
    $zone=($_POST['zone']);
    $output['status'] = 'true';
    $output['message'] = $_POST['zone'];
}
else
{
    $output['status'] = 'false';
    $output['message'] = 'No value passed';
}
header('Content-Type:application/json;');
echo json_encode($output);

This will help to check better operation of PHP script via javascript

in Javascript

$.post(urlofmyfile.php,
{
 zone: zone
},
  {
  function(data,status){
    if(data['status']=='true'){
        //It's Done
    }
    else
    {
       //it's not done
    }
  }
}
);