For example, if you want to insert name d’souza into database then we  need to quotes the string with backslashes.

$a = “d’souza”;
$sql = “insert into nametable(name) values($a)”;

The above SQL statement returns error. We need to use addslashes here to avoid such error.

$a = addslashes(“d’souza”);

In this way, we can use addslashes function.

PHP stripslashes is used to unquote’s a quoted string which is quoted with addslashes function.

But still there is a question? Above code will  run without addslashes function.

Yes, above code can run without addslashes if Magic Quotes is set to on. And in some version of PHP Magic Quotes is set on by default. But if see the PHP Manual it show warning “This feature has been DEPRECATED as of PHP 5.3.0 and REMOVED as of PHP 5.4.0.”

What is Magic Quotes?

Magic Quotes is a process that auto magically escapes incoming data to the PHP script. It’s preferred to code with magic quotes off and to instead escape the data at runtime, as needed.

Here, what is incoming data is data from GET, POST and COOKIE. So, when Magic Quotes is on all these are auto magically escapes and if you do addslashes do double escapes. For example

Suppose the value of $_GET[‘data’] is d’souza

$a = $_GET[‘data’];  // if magic quotes is on then value is  d\’souza
$a = addslashes($a); // if you run addslashes function on it then value is d\\’souza

How to handle Magic Quotes?

In newer version of PHP Magic Quotes will be removed, it is recommended that do not use Magic Quotes.  Here i create two function MyInput  and MyOutput to handle magic quotes, addslashes and stripslashes.

function MyInput($str)
{
$str = trim($str);
if(get_magic_quotes_runtime())
{
return $str;
}
return addslashes($str);
}

function MyOutput($str)
{
$str = trim($str);
if(get_magic_quotes_runtime())
{
return stripslashes($str);
}
return $str;
}

In above code i use get_magic_quotes_runtime function to check  if magic quotes are set to on or off.

$a = MyInput($_GET[‘data’];

Here is my version of handling magic quotes, if this code is still need improvement then please leave a message below.

The classifieds sites are designed to target the local community.  So, whenever we open classifieds website. They asked to choose the city or country based on your location and once you choose the location the visitor is redirect to selected option. Like whenever we open OLX.com from INDIA, it will ask “are you from INDIA?”  If you select INDIA it will redirect you to OLX.IN.  See below picture.

All these great websites has invested money to buy multiple domains and sub domains. For example like OLX.com have OLX.IN, OLX.CO.UK, CHICAGO.OLX.COM, and NEWYORK.OLX.COM and so on.

The IDEA

The whole idea of designing of Tohle.com is to cover each and every city of the world. Whenever visitor opens my website, it will open in their location and don’t ask for choosing city or country. Visitor post free classified without any registration

The Beginning

I have only one domain and don’t have money to invest to buy domains and sub domains for each city and country.  This is my first problem when I decide to design Tohle.com. I want to cover each city of the world on Tohle.com. But, have no database for each city of world. After hunting for free city database on internet, I don’t get any good solutions.

IPINFODB

IPINFODB.COM provides free Geo location tools for IP location, API, database and fraud detection tools. Thanks to IPINFODB, IPINFODB is the exact thing I am looking for. With the help of IPINFODB API, I am able to deduct visitor location and if the location is new for my database, it is saved in our database and website redirect to visitor geo location. Currently Tohle.com has more than 400 cities and 75 countries.

Auto Registration

I don’t want any type of registration on TOHLE.COM, but it is required to minimize SPAM.  I decide to user get auto registration whenever visitor made a free classified posting and auto mail is sent to user with their login details.

SPAM

The biggest challenge in running a classified website is handling SPAM. I have tried to add some tricks to handle spam, but failed. Currently each of TOHLE.COM posting is reviewed and published only if it valid post.

In this example first i create the class called MySqlConnection with a member variable  called connection.

class MySqlConnection
{
      var $connection
}

Next step, i defined a constructor function with a same name of class MySqlConnection with four parameters i.e. host, user, password and database name.

function MySqlConnection($host=HOST, $user=USER, $pass=PASS,$db=DB)
{
	$this->connection=mysql_connect($host,$user,$pass);
	if(!$this->connection)
	{
		die("Error in Connection" . mysql_error());
	}
	if(!mysql_select_db($db,$this->connection))
	{
		die("Error to select database".mysql_error());
	}
}

See in constructor function, i have taken the variable HOST, USER, PASS and DB are the constant variable defined by PHP define, which defined a named constant.

Now we can defined all member functions like Close, Begin, Commit, Rollback, Rows and CheckSql.

function Close()
{
	mysql_close($this->connection);
	$this->con = null;
}
function Begin()
{
	mysql_query("start transaction");
	mysql_query("begin");
}
function Commit()
{
	mysql_query("commit");
}
function Rollback()
{
	mysql_query("rollback");
}

function Rows(&$result)
{
	if(!$result)
	{
		echo "Technical Error ! Try Again!!!";
		return false;
	}
        else if(mysql_num_rows($result)<=0)
        {
               return false;
        }
        else
        {
          return true;
        }
}
function CheckSql()
{
    return mysql_affected_rows();
}

Once your MySqlConnection is defined, using this class is easy. we just want to create an object of this class.

$DB = new MySqlConnection();

To close the connection just call its member function Close.

$DB->Close();

To begin the transaction

$DB->Begin();

To commit or rollback

$DB->Commit(); or $DB->Rollback

To check if mysql_query return any records

$DB->Rows($result);

To Check if mysql query affect the record using insert, delete and update

$DB->CheckSql();

If you like the above code or suggest better way to redesign the MySqlConnection, please leave a message below.

Here are steps to sync your clock with internet time server

1. Open date and time by clicking on time in task bar.
2. Click on internet and then change settings
3. Click on “Automatically synchronize with an Internet time server”, select a time server.
   
4. Click OK to save.

I tried the below sample code in internet explorer and chrome and the result is unexpected.

—Code Begin—

<html>
<head>
<title>Testing Javascript Error in Browser</title>
<script language=”javascript”>
function generateError()
{
var a= 25;
var b = a.value;
var c= a/b;
alert(“The value of c is” + a.v);

generateError();
</script>

</head>
<body>

<p>This is demo to show errors in chrome</p>
</body>
</html>

—- Code End—-

Here the result in Internet Explorer, where it show nothing, no error.

But to see the JavaScript error in Chrome, you can open JavaScript console (shortcut: Ctrl+Shift+J) from wrench tool and check the error. Here is result of above code running in Chrome:

As we know, it is easy to swap two variables with the help of the third variables (see example in C language)

Example to swap values with the help of third variable:

void main()
{
int a, b, c;
a=5;
b=10;
printf(“Value of a: %d \nValue of b: %d”, a, b);
c=a;
a=b;
b=c;
printf(“Value of a: %d \nValue of b: %d”, a, b);
}

In above example, The value of “a” is 5 and value of “b” is 10. Now we are using the variable “c” to store the value of a (c=a;), in next line we overwrite the variable “a” with the value of “b” and save the value of “c” which store the value of “a” in variable “b”.

Example to swap values without using third variable:

void main()
{
int a, b;
a=6;
b=12;
printf(“Value of a: %d \nValue of b: %d”, a, b);
a=a+b;
b=a-b;
a=a-b;
printf(“Value of a: %d \nValue of b: %d”, a, b);
}

In this example, there is no third variable, we are using some calculation to swap the variables. First we add the both variable in “a” (a=a+b) i.e. a=18, then deduct the second variable with total value (b = a-b) i.e. b = 6, then deduct again from a to b (a=a-b) i.e. a=18-6  which is twelve;

1. (se1) – Girl saying hello
2. (se2) – Punjab Bhangda
3. (se3) – Boy kissing Girl
4. (se4)
5. (se5)
6. (se6)
7. (se7) – Spiderman dancing
8. (se8)
9. (se9)
10. (se10)
11. (se11) – Girl Dancing

Here are the screen shot of above smileys code

More Smileys

What is Autofill Forms Add-on?

Autofill Forms enables you to fill out web forms with one click or a keyboard shortcut.

How to install auto fill form?

Open the Mozilla Firefox Browser and click to add-ons option, In add-ons window and go to search box and search for “autofill forms”.  This will show search result of add-ons.  You can see the Autofill Forms add-ons, click to install of auto fill add-ons.  After installation auto fill,  Mozilla Firefox restart automatically .

How to fill web form using auto fill forms?

You can create profile in Autofill Forms in order to fill web forms.  First create profile by clicking on Pencil Icon and open settings. Now you can enter profile name and add autofill name and values like

Name: – in this box  fill name of value tag . eg:- username,

value :-in this box fill data who fill in form.

You can also apply rules on AutoFill parameters

Once your profile is created, open the web form and simply click on pencil to fill the form. You can create multiple profiles in AutoFill forms.

How to take back up of your websites

First of all you can download FTP client software like cuteFTP, Ipswitch FTP or you can buy Ipswitch FTP.

The below example of FTP is given on Ipswitch FTP software. Now install the Ipswitch FTP software on your computer.

Requirement to connect your FTP Server

You need the information hostname or website name, username and password.

How to make connection using Ipswtich FTP

Open the Ipswtch FTP software and click on “connect” button after it choose “connection wizard”. It will ask for hostname, username and password.  You can see another window, now type site name and then click on next button.

Now type a server name or hostname or FTP server name and click on next button.

In window type user name and password and click on next button.

Next screen will ask for connection type like FTP or SFTP.

Next screen will ask to connect to ftp site and close the connection wizard.

You can select the files and click on download button to take backup of your website.

Image Search Engines

Top Pictures Image Search

Top Pictures Image Search - “Image search made easy – all top image search engines in one place. Images, clip arts, visuals”.

SXC Image Search

SXC Image Search - “stock photography community – browse our huge gallery for high quality stock photos or share yours with others”.

FreeFoto Image Search

FreeFoto Image Search - “FreeFoto.com is the largest collections of free photographs for non-commercial use on the Internet”.

GOgraph Image Search

GOgraph Image Search – “Using simple keywords, GoGraph allows you to quickly locate icons, animated GIFs, photographs, Clip Art, Wallpapers and Interfaces. GoGraph makes it easier”.

Everystockphoto Image Search

Everystockphoto Image Search – “Everystockphoto.com is a search engine for free stock photos, offering community features to the stock”.

Websohots Image Search

Websohots Image Search – “The best wallpaper and screensaver photography available. Free stunning wallpapers of amazing professional photos”.

SmugMug Image Search

SmugMug Image Search - “Billions of happy photos, millions of passionate customers. Gorgeous online photo sharing. Protect your priceless memories. Create beautiful prints & gifts”.

Mamma Image Search

Mamma Image Search – “Mamma.com is a global Meta search engine. It provides extensive web search and fetches results from top search engines”.

Ixquick Image Search

Ixquick Image Search – “Ixquick search engine provides search results from over ten best search engines in full privacy. Search anonymously with Ixquick Search Engine”!