Reputation: 7304

Debug variable sent by Jquery (AJAX) at PHP code at server

I have a host server at a web-hosting and my PHP file is lodated in a folder at server. From my HTML form, I send some data using Jquery AJAX and I like to view all those variables in my PHP code at server side. My Jquery AJAX code is as follow.

function sendtoServer() {

     $.ajax({
        url: "advertisementdatavalidationatserver.php",
        type: "POST",
        data: $("#landedForm").serialize(), 
        success:  function(ret){

});
}

My PHP code at server is

<?php
$data = array();
$data['error'] = false;

if ($_SERVER["REQUEST_METHOD"] == "POST") {

    if(!isset($_POST['purpose'])){ 
        $data['error'] = true;
        $data['message'][] = "Purposeerror";
    }

    if(!isset($_POST['type'])){ 
        $data['error'] = true;
        $data['message'][] = "Typeerror";
    }

    if ($_POST['type'] == "With_RC" || $_POST['type'] == "With_BrickNorcal") { 

        if ($_POST['stories'] == "Stories"){
            $data['error'] = true;
            $data['message'][] = "Storieserror";        
        }


        if ($_POST['bedrooms'] == "Bedrooms") {        
            $data['error'] = true;
            $data['message'][] = "Bedroomserror";        
        }

        if ($_POST['bathrooms'] == "Bathrooms") {        
            $data['error'] = true;
            $data['message'][] = "Bathroomserror";        
        }

    }

    if ($_POST['divs_states'] == "Division") {        
            $data['error'] = true;
            $data['message'][] = "Divisionerror";        
    }

    if ($_POST['township'] == "Township") {        
            $data['error'] = true;
            $data['message'][] = "Townshiperror";        
    }

    if ($_POST['price']=="") {        
            $data['error'] = true;
            $data['message'][] = "Priceerror";        
    }else if (!preg_match('/^\d+$/', $_POST['price']) ) {        
            $data['error'] = true;
            $data['message'][] = "Priceinvalid";        
    } 

    if ($_POST['length']=="") {        
            $data['error'] = true;
            $data['message'][] = "Lengtherror";        
    }else if (!preg_match('/^\d+$/', $_POST['length']) ) {        
            $data['error'] = true;
            $data['message'][] = "Lengthinvalid";        
    } 

    if ($_POST['width']=="") {        
            $data['error'] = true;
            $data['message'][] = "Widtherror";        
    }else if (!preg_match('/^\d+$/', $_POST['width']) ) {        
            $data['error'] = true;
            $data['message'][] = "Widthinvalid";        
    }    

    if(!isset($_POST['haveaircon'])){ 
        $data['error'] = true;
        $data['message'][] = "Airconerror";
    }

    if ($_POST['possession'] == "Possession") {        
            $data['error'] = true;
            $data['message'][] = "Possessionerror";        
    }

    if($_POST['date']==""){ 
        $data['error'] = true;
        $data['message'][] = "Dateerror";
    }

    if($_POST['textarea'] == "Please enter additional information here..." || $_POST['textarea'] ==""){ 
        $data['error'] = true;
        $data['message'][] = "Textareaerror";
    }

    if(!isset($_POST['agentowner'])){ 
        $data['error'] = true;
        $data['message'][] = "Agentownererror";
    }

    if($_POST['name'] == ""){ 
        $data['error'] = true;
        $data['message'][] = "Nameerror";
    }

    if($_POST['phone'] == ""){ 
        $data['error'] = true;
        $data['message'][] = "Phoneerror";
    }else if((strlen($_POST['phone']) < 6) || !preg_match('/^\d+$/', $_POST['phone'])){
        $data['error'] = true;
        $data['message'][] = "Phoneinvalid";
    }

    if(!isset($_POST['email']) || empty($_POST['email'])){ 
        $data['error'] = true;
        $data['message'][] = "Emailrequired";
    }else if(!filter_var($_POST["email"], FILTER_VALIDATE_EMAIL)) {
        $data['error'] = true;
        $data['message'][] = "Emailinvalid";
    }

    if(!$data['error']){
        // No errors, save into database

        $con = mysql_connect("localhost","thitsun_admin","z4iufn8n##");

        if (!$con)
        {
           $data['error'] = true;
           $data['message'][] = "Connectionerror";
           die('Could not connect: ' . mysql_error());
        }else{

           mysql_select_db("thitsun_properties_database", $con);

           $purpose = mysql_real_escape_string($_POST['purpose']);           
           $type = mysql_real_escape_string($_POST['type']);
           $stories = NULL;
           $bedrooms = NULL;
           $bathrooms = NULL;
           if ($_POST['type'] == "With_RC" || $_POST['type'] == "With_BrickNorcal") { 
                $stories = intval($_POST['stories']);
                $bedrooms = intval($_POST['bedrooms']);
                $bathrooms = intval($_POST['bathrooms']);
           }
           $divs_states = mysql_real_escape_string($_POST['divs_states']);
           $township = mysql_real_escape_string($_POST['township']);
           $price = intval($_POST['price']);
           $length = intval($_POST['length']);
           $width = intval($_POST['width']);

           if($_POST['haveaircon'] == "yes")
               $haveaircon = "yes";
           else
               $haveaircon = "no";
           if($_POST['havetelephone'] == "yes")
               $havetelephone = "yes";
           else
               $havetelephone = "no";

           $possession = mysql_real_escape_string($_POST['possession']);
           $date = mysql_real_escape_string($_POST['date']);
           $textarea = null;
           if($_POST['textarea'] != "Please enter additional information here..." || $_POST['textarea'] != ""){ 
              $textarea = mysql_real_escape_string($_POST['textarea']);
           }

           $agentowner = mysql_real_escape_string($_POST['agentowner']);
           $name = mysql_real_escape_string($_POST['name']);
           $phone = mysql_real_escape_string($_POST['phone']);
           $email = mysql_real_escape_string($_POST['email']);

           $address = NULL;
           if($_POST['address'] != "Please key in full address if you are ok..." || $_POST['address'] != ""){ 
              $address = mysql_real_escape_string($_POST['address']);
           }          

           $query = "INSERT INTO `thitsun_properties_database`.`registered_properties`(`id`, `purpose`, `type`, `num_stories`, `bedrooms`, `bathrooms`, `div_state`, `township`, `price`, `length`, `width`, `have_phone`, `have_aircon`, `possession`, `available_date`, `description`, `agentowner`, `name`, `phone`, `email`, `address`, `submitteddate`) VALUES (NULL,'$purpose', '$type','$stories', '$bedrooms', '$bathrooms', '$divs_states', '$township', '$price', '$length', '$width', '$havetelephone', '$haveaircon', '$possession', '$date', '$textarea', '$agentowner', '$name', '$phone', '$email', '$address',CURRENT_TIMESTAMP);";
   // `id`, `purpose`, `type`, `num_stories`, `bedrooms`, `bathrooms`, `div_state`, `township`, `price`, `length`, `width`, `have_phone`, `have_aircon`, `possession`, `available_date`, `description`, `agentowner`, `name`, `phone`, `email`, `address`, //`submitteddate`


    //'$purpose', '$type','$stories', '$bedrooms', '$bathrooms', '$divs_states', '$township', '$price', '$length', '$width', '$havetelephone', '$haveaircon', '$possession', '$date', '$textarea', '$agentowner', '$name', '$phone', '$email', //'$address',CURRENT_TIMESTAMP
           if(mysql_query($query,$con) or die("Insertion Failed:".mysql_error()))
           {
              if(mysql_affected_rows($con)!=1){
                 $data['error'] = true;
                 $data['message'][] = "Connectionerror";
              }
           }

            mysql_close($con);
        }

    }
}

// then echo the $data array you have built as JSON to use in jquery. 
//This will be what is returned in your AJAX request
header('Content-Type: application/json; charset=UTF-8');
echo json_encode($data);
?>

I like to debug all these variables like $name, $email, $phone before they are put into database. Of course, I can check once they are successfully saved into database. But in some cases, if they can't be saved into database, I need to check what are the value inside these variables.

All discussions said to use print, print_r or echo. I used them, but I don't see any output or frankly is no idea where to see those outputs. I checked in the console (F12), but nothing is there.

My query is I have PHP code in a .php file located in host sever. How can I view the variables sent via AJAX at PHP code?

Thanks

Upvotes: 4

Answers (5)

RiggsFolly

Reputation: 94672

The way I do this is to write the output of a print_r($_POST) to a file on the server because as you say there is no console or window that you can see the data coming into the server script that services your AJAX call

<?php
$data = array();
$data['error'] = false;

if ($_SERVER["REQUEST_METHOD"] == "POST") {
    file_put_contents('somefilename.txt', print_r($_POST,true), FILE_APPEND);

    // your other code

Using the FILE_APPEND option will add each call to the end of your file so you can check changes made in the javascript(AJAX) code with each change you make there

Upvotes: 3

jkon

Reputation: 191

Here is a function that logs anything in the error log file of the current directory , if you like to log them in a certain directory just add it before the third argument of error_log

  <?php
    //example of usage
    _log("this is a string");
    _log(array("key",4));


    function _log($msg)
    {
        if(is_string($msg))
        {
            error_log("\n".$msg,3,"error_log");
        }
        else
        {
            error_log("\n".print_r($msg,true),3,"error_log");
        }
    }
    ?>

Upvotes: 1

Kisaragi

Reputation: 2218

Add this in the first few lines of advertisementdatavalidationatserver.php:

var_dump($_POST);
die();

Open web tools (chrome F12 for example) Click 'Network' tab. Make ajax request. Click reaponse. The response will contain a dump of $_POST

Upvotes: 1

n2o

Reputation: 6477

A print intitiated by PHP is interpreted by a webserver like Apache, Nginx, ... . For example you have the file index.php with the following content:

<html>
  <title>Hello World</title>
  <body>
    <?php
      print("Hello, World!");
    ?>
  </body>
</html>

and you add this file into the folder of your webserver, e.g. /var/www/index.php and you access your webserver with your browser, you can see the output of your PHP-prints.

Upvotes: 0

Ben

Reputation: 8991

print, echo, print_r, var_dump and other print functions output to the viewport - in most cases, this will be the browser.

If your file index.php contains:

<?php echo "Hello, world!" ?>

visiting //index.php will show

Hello, world!

Similarly, if executing via command line, such as > php index.php you'll see the output in the terminal directly.

To see the differences between print, print_r, echo and var_dump, please see this post.

Upvotes: 1

Debug variable sent by Jquery (AJAX) at PHP code at server

Answers (5)

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