Thread: js function help?

Hi all,

i need help using php within my js function

here is my function

Code:

function checkimg(){
if( $_SESSION['security_code'] == $_POST['security_code'] && !empty($_SESSION['security_code'] ) ) {
        // Insert you code for processing the form here, e.g emailing the submission, entering it into a database.
$sql="UPDATE ratings 
  SET 
    used_ips = NULL,
    total_value = 0,
    total_votes = 0 
  WHERE 
  id IN ('valuetemp', 'easeofusetemp', 'deliverytemp', 'delchargetemp')";
  $query = mysql_query($sql);        
        
        alert('Your vote has been counted! Thank you for voting');
        unset($_SESSION['security_code']);
   } else {
        // Insert your code for showing an error message here
        alert('Sorry, you have provided an invalid security code');
   }
}

but it doesnt work, i have included the file on my php page and added the relivant code to a button

Code:

<input type="Button" name="Button" value="Button" onclick="checkimg();"/>

but nothing happens, and ideas
cheers all
Luke

Umm.... checkimg() is a PHP function, but your accessing it as a javascript function. PHP cannot be run from a users machine, only on the server. So you have a few option:

• Make the checkimg() function javascript
• Use the form to submit an HTTP request to the server, and the server handles the PHP
• Use Javascript AJAX to send a request to the server

I'd use the second one. For example:

HTML Code:

<form method="POST" action="checkimg.php">
<input type="Button" name="Button" value="Button" />
</form>

hi mate, i never knew you could do that lol

will give it a go see how i get on

thanks for your help
Luke

Great help CV, cheers,

Oh, and Luke; happy birthday for today ;o)

@WelshStew,

cheers mate!!!!!!!

@ CV,

Hi mate,

have tried what you suggested but i cant get anything to work

here is my form page

PHP Code:

<?php 
session_start();
require('functions.php'); 
require('_drawrating.php');
include_once('db101.php');
require('checkimg.php');?>
<link rel="stylesheet" type="text/css" href="stylesheets/common_stylesheet.css" />
<link rel="stylesheet" type="text/css" href="stylesheets/stores_stylesheet.css" />
<link rel="stylesheet" type="text/css" href="css/rating.css" />

<script type="text/javascript" language="javascript" src="js/behavior.js"></script>
<script type="text/javascript" language="javascript" src="js/rating.js"></script>

<style type="text/css">
<!--
.apDiv1 {
    width:200px;
    height:115px;
    float:left;
}
.style2 {font-size: 12px}
-->
        </style>

            <div id="subcontent" style="position:absolute; border: 7px solid black; background-color: white; width: 294px; height:361px; padding: 8px;">

<form method="POST" action="checkimg.php">

<div id="apDiv1">
    <table width="294" border="0" cellspacing="0" cellpadding="0">
      <tr>
        <td width="167"><span class="ratingscat_head">Value for money</span></td>
        <td width="119"><span class="storeRatings_Individual"><?php print rating_bar('valuetemp',5)?></span></td>
      </tr>
      <tr>
        <td><span class="ratingscat_head">Ease of use</span></td>
        <td><span class="storeRatings_Individual"><?php print rating_bar('easeofusetemp',5)?></span></td>
      </tr>
      <tr>
        <td><span class="ratingscat_head">Delivery time</span></td>
        <td><span class="storeRatings_Individual"><?php print rating_bar('deliverytemp',5)?></span></td>
      </tr>
      <tr>
        <td><span class="ratingscat_head">P&amp;P costs</span></td>
        <td><span class="storeRatings_Individual"><?php print rating_bar('delchargetemp',5)?></span></td>
      </tr>
      <tr>
        <td>&nbsp;</td>
        <td>&nbsp;</td>
      </tr>
      <tr>
        <td>&nbsp;</td>
        <td>&nbsp;</td>
      </tr>
      <tr>
        <td><img src="CaptchaSecurityImages.php?width=100&height=40&characters=5" /></td>
        <td>&nbsp;</td>
      </tr>
      <tr>
        <td colspan="2"><label for="label"><span class="style2">Please Enter Security Code: </span></label></td>
      </tr>
      <tr>
        <td colspan="2"><input id="security_code" name="security_code" type="text" /></td>
      </tr>
      <tr>
        <td><?php echo $message101; ?></td>
        <td>&nbsp;</td>
      </tr>
      <tr>
        <td><input type="Button" name="Button" value="Button" />
        </td>
        <td><a href="javascript:dropdowncontent.hidediv('subcontent')">Close</a></td>
      </tr>
      </table>
      </form>
<P>
                
    </div>

       <script type="text/javascript">
    //Call dropdowncontent.init("anchorID", "positionString", glideduration, "revealBehavior") at the end of the page:

    dropdowncontent.init("ratelink", "right-bottom", 600, "mouseover")
    dropdowncontent.init("contentlink", "left-top", 300, "click")

    </script>

and my checkimg.php page code

PHP Code:

<?php
function checkimg (){;
if( $_SESSION['security_code'] == $_POST['security_code'] && !empty($_SESSION['security_code'] ) ) {
        // Insert you code for processing the form here, e.g emailing the submission, entering it into a database.
$sql="UPDATE ratings 
  SET 
    used_ips = NULL,
    total_value = 0,
    total_votes = 0 
  WHERE 
  id IN ('valuetemp', 'easeofusetemp', 'deliverytemp', 'delchargetemp')";
  $query = mysql_query($sql);        
        
        $message101 = 'Your vote has been counted! Thank you for voting';
        unset($_SESSION['security_code']);
   } else {
        // Insert your code for showing an error message here
        $message101 = 'Sorry, you have provided an invalid security code';
   }
}
?>

any ideas why this isnt working?

cheers
Luke

ok i added this to the form page

PHP Code:

ini_set('display_errors',1);
ini_set('display_startup_errors',1);
error_reporting (E_ALL); 


and im getting an error message saying

Code:

Notice:  Undefined variable: message101 in /customers/kernow-connect.com/kernow-connect.com/httpd.www/form.php on line 69

which is strange as you can see above it is clearly defined

any ideas?
Luke

ok i have defined the varible in the form page which gets rid of the error but the page still isnt checking the image?

The checkimg.php file only contains a function. Functions are only run when called. Since you never call the function, it won't run. Just take out the function and you'll be good.

Also, as it is now out of the function, it will run when called by form.php with the code require('checkimg.php');

Also, since checkimg is a standalone file, you'll need to connect to the database in it, since it isn't associated with form.php anymore.

hi mate, i think i have done what you suggested above and im now getting a message saying "
Notice: Undefined index: security_code in /customers/kernow-connect.com/kernow-connect.com/httpd.www/checkimg.php on line 17"

i tried adding require('form.php'); to my checkimg.php file but it gave more errors about session value already being defined or something similar.
this is what my new checkimg.php file looks like

PHP Code:

<?php

    $user_name = "";
    $password = "";
    $database = "";
    $server = "";

       $db_handle = mysql_connect($server, $user_name, $password);
    $db_found = mysql_select_db($database, $db_handle);

    if (!$db_found) {
               die('Could not connect: ' . mysql_error());
        }
            mysql_query("SET NAMES 'utf8'");


if( $_SESSION['security_code'] == $_POST['security_code'] && !empty($_SESSION['security_code'] ) ) {
        // Insert you code for processing the form here, e.g emailing the submission, entering it into a database.
$sql="UPDATE ratings 
  SET 
    used_ips = NULL,
    total_value = 0,
    total_votes = 0 
  WHERE 
  id IN ('valuetemp', 'easeofusetemp', 'deliverytemp', 'delchargetemp')";
  $query = mysql_query($sql);        
        
        $message101="Your vote has been counted! Thank you for voting";
        unset($_SESSION['security_code']);
   } else {
        // Insert your code for showing an error message here
        $message101="Sorry, you have provided an invalid security code";
   }
?>

any ideas
Cheers

Then that means that $_SESSION['security_code'] isn't defined. You can use isset() to check if it is defined without passing an error.