Retrieving Data from MySQL using PHP and Ajax

lilman · May 12, 2007

I found this site with a pretty simple tutorial, however; it does not work. Below is the exact code I am using (except for db info), and is the exact code I got from the tutorial. The problem I am having is that I type in the CustomerID and it tells me no matches have been found, when in fact, there should be. For example, I will put in 1 which there is a CustomerID that has 1 and it tells me no matches. If someone could tell me why this isn't working, I'd really appreciate it.

GetCustomerData.php

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
    <title>Get Customer Data</title>
<?php
   
    //customer ID
    $sID = $_GET["id"];
   
    //variable to hold customer info
    $sInfo = "";
   
    //database information
    $sDBServer = "your_server_name";
    $sDBName = "your_database_name";
    $sDBUsername = "your_user_name";
    $sDBPassword = "your_password";

    //create the SQL query string
    $sQuery = "Select * from Customers where CustomerId=".$sID;
             
    //make the database connection
    $oLink = mysql_connect($sDBServer,$sDBUsername,$sDBPassword);
    @mysql_select_db($sDBName) or $sInfo = "Unable to open database";
       
    if($sInfo == '') {
        if($oResult = mysql_query($sQuery) and mysql_num_rows($oResult) > 0) {
            $aValues = mysql_fetch_array($oResult,MYSQL_ASSOC);
            $sInfo = $aValues['Name']."<br />".$aValues['Address']."<br />".
                     $aValues['City']."<br />".$aValues['State']."<br />".
                     $aValues['Zip']."<br /><br />Phone: ".$aValues['Phone']."<br />".
                     "<a href=\"mailto:".$aValues['E-mail']."\">".$aValues['E-mail']."</a>";
        } else {
            $sInfo = "Customer with ID $sID doesn't exist.";
        }
    }
   
    mysql_close($oLink);

?>
   
   

</head>
<body>
    <div id="divInfoToReturn"> <?php echo $sInfo ?> </div>
</body>
</html>

display.htm

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">

<html>
<head>
    <title>Customer Account Information</title>
    <script type="text/javascript">
        var url = "GetCustomerData.php?id="; // The server-side script
       function handleHttpResponse() {   
        if (http.readyState == 4) {
              if(http.status==200) {
                  var results=http.responseText;
              document.getElementById('divCustomerInfo').innerHTML = results;
              }
              }
        }
       
        function requestCustomerInfo() {     
            var sId = document.getElementById("txtCustomerId").value;
            http.open("GET", url + escape(sId), true);
            http.onreadystatechange = handleHttpResponse;
            http.send(null);
        }
function getHTTPObject() {
  var xmlhttp;

  if(window.XMLHttpRequest){
    xmlhttp = new XMLHttpRequest();
  }
  else if (window.ActiveXObject){
    xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
    if (!xmlhttp){
        xmlhttp=new ActiveXObject("Msxml2.XMLHTTP");
    }
   
}
  return xmlhttp;


}
var http = getHTTPObject(); // We create the HTTP Object
</script>
</head>
<body>
    <p>Enter customer ID number to retrieve information:</p>
    <p>Customer ID: <input type="text" id="txtCustomerId" value="" /></p>
    <p><input type="button" value="Get Customer Info" onclick="requestCustomerInfo()" /></p>
    <div id="divCustomerInfo"></div>
</body>
</html>

customers.txt

-- phpMyAdmin SQL Dump
-- version 2.6.0-pl3
-- 
-- Host: localhost
-- Generation Time: Apr 30, 2006 at 05:45 PM
-- Server version: 4.1.8
-- PHP Version: 5.0.3
-- 
-- Database: `ajax_ex`
-- 

-- --------------------------------------------------------

-- 
-- Table structure for table `customers`
-- 

CREATE TABLE `customers` (
  `CustomerId` int(11) NOT NULL auto_increment,
  `Name` varchar(255) NOT NULL default '',
  `Address` varchar(255) NOT NULL default '',
  `City` varchar(255) NOT NULL default '',
  `State` varchar(255) NOT NULL default '',
  `Zip` varchar(255) NOT NULL default '',
  `Phone` varchar(255) NOT NULL default '',
  `E-mail` varchar(255) NOT NULL default '',
  PRIMARY KEY  (`CustomerId`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 COMMENT='Sample Customer Data';

-- 
-- Dumping data for table `customers`
-- 

INSERT INTO `customers` VALUES (1, 'Suraj Thapliya', 'Naxal, Bhagbati', 'Kathmandu', 'KTM', '0977', '977-9803165329', '[email protected]');
INSERT INTO `customers` VALUES (2, 'Birijan Maharjan', 'Kathmandu', 'Kathmandu', 'Ktm', '977', '9803020016', '[email protected]');

sayedsohail · May 12, 2007

just try changing your query syntax from: $sQuery = "Select * from Customers where CustomerId=".$sID;

to:

$sQuery = "SELECT * from Customers where CustomerId='$sID' ";

regards

Sign In

Retrieving Data from MySQL using PHP and Ajax

Recommended Posts

lilman

Link to comment

Share on other sites

sayedsohail

Link to comment

Share on other sites

Archived

Browse

Activity

Important Information