MY SLIIT

Drop Up Menu - AdxMenu

kusalsmail@yahoo.com (Kusal) — Tue, 27 Oct 2009 17:56:00 +0000

Here is a cool Drop up menu you can use in your site.

http://aplus.rs/adxmenu/examples/hbt/

http://aplus.rs/adxmenu/examples/

Fix - Facebook profile application tab blank page

kusalsmail@yahoo.com (Kusal) — Fri, 26 Jun 2009 15:34:00 +0000

I think many new Facebook application developers face this problem. You do all the steps instructed in a book or the documentation and you still get a blank page for the profile tab. Yeah I know the feeling, It sucks big time, This error almost made me stop learning about Facebook app development.
After hours of searching and experimenting I found the solution for my problem.

Solution for my problem:

Canvas Callback URL should have a trailing /
Ex:
Canvas Callback URL: http://xxxxxx.joyent.us/

If you are using http://yourdomain/index.php just remove index.php since it will be loaded in default.

SEO Title Tag - 63 Characters or Low

kusalsmail@yahoo.com (Kusal) — Wed, 17 Jun 2009 07:10:00 +0000

In my opinion html title tag is most important thing in SEO optimization.
Creating meaningful and keyword specific titles is a must if you need a high rank in search engines.

Things to consider when writing web page titles

Keep the title less than 63 (max: 70) characters.
Put the important keywords in the front as possible.
Putting the site name in the tilte is a choice you have to make with lot of thought. If you think that the site name has a good branding effect you can put the name at the end or front.
Without using and, or, is try to use comma or |
Don't use any meaningless words or special characters
Never use duplicate titles on pages

How to fix You don't have permission to access /phpmyadmin/ on this server Wamp

kusalsmail@yahoo.com (Kusal) — Sat, 06 Jun 2009 19:57:00 +0000

You don't have permission to access /phpmyadmin/ on this server (WAMP)
This is the message I got when I tried to access phpmyadmin after reinstalling WAMP server to a newer version. After some searching I was able to find the problem.

Reason:

When you uninstall your previous WAMP server there will be still few files that will be left not deleted and will not be replaced by the new install. One such file is the phpmyadmin.conf file that is under C:\wamp\alias folder. This file holds the actual path to the phpmyadmin folder inside WAMP.
If the new WAMP server has a new phpmyadmin version this phpmyadmin.conf will still point to the old folder which is not existing inside WAMP.

Solution:

goto C:\wamp\alias\ and edit the phpmyadmin.conf file using notepad


Alias /phpmyadmin "c:/wamp/apps/phpmyadmin2.11.6/"

# to give access to phpmyadmin from outside
# replace the lines
#
#        Order Deny,Allow
# Deny from all
# Allow from 127.0.0.1
#
# by
#
#        Order Allow,Deny
#   Allow from all
#

<Directory "c:/wamp/apps/phpmyadmin2.11.6/">
  Options Indexes FollowSymLinks MultiViews
  AllowOverride all
      Order Deny,Allow
Deny from all
Allow from 127.0.0.1
</Directory>

I just edited the c:/wamp/apps/phpmyadmin2.11.6/ with c:/wamp/apps/phpmyadmin3.1.3.1/
To find your new phpmyadmin folder goto C:\wamp\apps\


Alias /phpmyadmin "c:/wamp/apps/phpmyadmin3.1.3.1/"

# to give access to phpmyadmin from outside
# replace the lines
#
#        Order Deny,Allow
# Deny from all
# Allow from 127.0.0.1
#
# by
#
#        Order Allow,Deny
#   Allow from all
#

<Directory "c:/wamp/apps/phpmyadmin3.1.3.1/">
  Options Indexes FollowSymLinks MultiViews
  AllowOverride all
      Order Deny,Allow
Deny from all
Allow from 127.0.0.1
</Directory>

Now restart the WAMP server and try to access phpmyadmin

Best Free php and Mysql web hosting with cPanel

kusalsmail@yahoo.com (Kusal) — Sat, 06 Jun 2009 06:41:00 +0000

000webhost offer completely ad-free cPanel web hosting.
No ads will ever be forced onto our users webpages.
There are no catches.
No setup fees.
No forced advertising.
No banners.
No popups
No hidden charges.
Only totally free hosting service.

Register now, here is what waiting for you:
* 1500 MB Disk Space
* 100 GB Data Transfer
* cPanel Control Panel
* Website Builder
* 5 MySQL Databases
* Unrestricted PHP5 support
* Instant Setup!

This service is perfect for starting a new online community, blog or personal website! More info at http://www.000webhost.com/171354.html

Create Dynamic Images with Text Using PHP GD

kusalsmail@yahoo.com (Kusal) — Tue, 19 May 2009 12:56:00 +0000

First check weather php gd library is enabled.


<?PHP

echo '<pre>';

print_r(gd_info());

echo '</pre>';

?>

If you get a error or a blank page that means the gd is not enabled in your server.
Contact your hosting and ask for php gd to be enabled.

Try following coding, everything is commented.


<?PHP

//save the arial.ttf font file in the same folder
$font = 'arial.ttf';  
$fontsize = 10;
  
$YourText = 'Hi This Work';
$Text_Box = imagettfbbox($fontsize, 0, $font, $YourText);

//create image width 250, height 100
$image = imagecreatetruecolor(250,100);  

//0,0,0 is black
$bgcolor = imagecolorallocate($image, 0, 0, 0);
//255, 255, 255 is white
$fontcolor = imagecolorallocate($image, 255, 255, 255);

//create a rectangle with the back ground coloe
imagefilledrectangle($image, 0, 0, 250, 100, $bgcolor);

$x = 10;   
$y = 20;
//draw text on image
imagettftext($image, $fontsize, 0, $x, $y, $fontcolor, $font, $YourText); 

//setting png headers
header('Content-type: image/png');
//create png image
imagepng($image);
//delete tempory files
imagedestroy($image);

?>

You can use this php file in a html file like this also


<img src="your_file_name.php" />

phpMyAdmin mysql table overhead

kusalsmail@yahoo.com (Kusal) — Sun, 17 May 2009 10:22:00 +0000

If you are using phpmyadmin to manage mysql databases and tables you have probably seen a red figure for overhead in the space usage section in a table's detailed view.

This is a usual thing when you have lot of deletes and updates in your table fields. Think overhead as empty space and mysql want it to be defragmented. You can simply use the Optimize table link to get rid of the overhead.

Create your own Konami code or custom code.

kusalsmail@yahoo.com (Kusal) — Thu, 14 May 2009 07:00:00 +0000

I have used Paul Irish code for my example.

<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js"></script>
<script>

jQuery(function($){

var kkeys = [], konami = "38,38,40,40,37,39,37,39,66,65";
$(document).keydown(function(e)
{
kkeys.push( e.keyCode );
if( kkeys.toString().indexOf( konami ) >= 0 )
{
$(document).unbind('keydown',arguments.callee);
//Any message or event you want goes here
alert('The Konami Code Is Activated');
}
});
});
</script>

By replacing unicode char values in this line you can define any key combination you like.
Example
var kkeys = [], konami = "38,40,75";
this means up,down,k

You can find any key code from this site http://www.javascriptkit.com/jsref/eventkeyboardmouse.shtml

Use Gmail to send mails in php

kusalsmail@yahoo.com (Kusal) — Tue, 12 May 2009 12:42:00 +0000

You can use Gmail SMTP to send emails remotely even in your localhost machine with WAMP.
First you must download phpmailer
After you extratced all zip files goto examples folder. In there you will find test_smtp_gmail_basic.php file. Just edit the code with your gmail username and password and you are ready to go.

Before executing the script goto php.ini file and remove the ; that is infront of extension=php_openssl.dll

Then restart your server.

Leave a comment if you need any help.

check only for numbers in JavaScript

kusalsmail@yahoo.com (Kusal) — Mon, 11 May 2009 14:08:00 +0000

This code will show you how to check only for numbers in JavaScript.


<script type="text/javascript">

var input = '112334'; 
var vali_regex = /^[0-9]+$/;

if(input.match(vali_regex))
{
 alert('This is a number');  
}
else
{
 alert('Not a number');
}
</script>

How to search an array in php

kusalsmail@yahoo.com (Kusal) — Mon, 04 May 2009 14:28:00 +0000

You can use array_search() function to easily search values in an php array. If you didn't know about this function you should have probarbly used a foreach or for loop to find a matching value in your array.

array_search() will return the array key if found the given value. This function is case sensitive to strings.


<?php

$my_array = array('1', 'kuppiya', 'Tom', 'Hello');

$key = array_search('Tom', $my_array);

if($key === false)
{
 echo 'Not found';
}
else
{
 echo $my_array[$key];
} 

?>

Alternative to classic LightBox - Sexy LightBox 2.1

kusalsmail@yahoo.com (Kusal) — Thu, 30 Apr 2009 11:17:00 +0000

Sexy LightBox 2.1 is a lightweight and elegant replacement for classic Lightboxes you use. Comes with a MIT license and very easy to integrate.

http://www.coders.me/ejemplos/sexy-lightbox-2/

How to check upload file extension (JavaScript)

kusalsmail@yahoo.com (Kusal) — Tue, 28 Apr 2009 07:02:00 +0000

Before uploading a file it's a good idea to check for valid file extensions you want.
Even though you can easily bypass JavaScript validation by disabling JavaScript in the browser, you can prevent genuine user errors by implementing this code.


<html>
<head>
<title>Upload Check</title>
<script type="text/javascript">

function vali_type()
{ 
 var id_value = document.getElementById('up').value;
 
 if(id_value != '')
 { 
  var valid_extensions = /(.jpg|.jpeg|.gif)$/i;   
  if(valid_extensions.test(id_value))
  { 
   alert('OK');
  }
  else
  {
   alert('Invalid File')
  }
 } 
}


</script>
</head>

<body>

<input type="file" name="up" id="up"
onBlur="vali_type()" />

</body>
</html>

var valid_extensions = /(.jpg|.jpeg|.gif)$/i;
Check for .jpg, .jpeg and .gif file extentions in the end of the string
| - OR
i - Case Insensitive
$ - END

mysql_real_escape_string() is not working properly

kusalsmail@yahoo.com (Kusal) — Mon, 27 Apr 2009 06:19:00 +0000

Is the function mysql_real_escape_string() return a empty value for you? or does it not work properly as you expected.
The most common mistake is the use of the mysql_real_escape_string() before a database connection.
Make sure you use the function after a successful database connection.

If E_WARNING error level is enabled in your error_reporting you will get a E_WARNING for this mistake. It's always a good idea to make error_reporting E_ALL in the development cycle.

http://www.php.net/mysql_real_escape_string

Read the Notes section for more details.

List of Browser User Agents to use with php curl

kusalsmail@yahoo.com (Kusal) — Sat, 11 Apr 2009 10:55:00 +0000

Here is a simple list of user agents that can be used with php curl or JavaScript

(In windows)

IE 7 - Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; SU 3.21; .NET CLR 2.0.50727; .NET CLR 3.0.04506.648; .NET CLR 3.5.21022)

Chrome - Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US) AppleWebKit/525.19 (KHTML, like Gecko) Chrome/1.0.154.53 Safari/525.19

Firefox 3.0 Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.0.8) Gecko/2009032609 Firefox/3.0.8

Firefox 2.0 - Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv:1.8.1.6) Gecko/20070725 Firefox/2.0.0.6

Safari - Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US) AppleWebKit/525.28 (KHTML, like Gecko) Version/3.2.2 Safari/525.28.1

Opera - Opera/10.00 (Windows NT 5.1; U; en) Presto/2.2.0

Wedding of two SLIIT Batchmates

kusalsmail@yahoo.com (Kusal) — Sun, 05 Apr 2009 10:22:00 +0000

How fast the time pass by. 3 years ago we were so free. Now we have been sucked into the race of making money and to the Zombie Theory ;-)

This photo was taken around 2006

This is now 2009 April

I wish all the best for Shiksha and Saveen.

Get php time diff (time diffence)

kusalsmail@yahoo.com (Kusal) — Wed, 01 Apr 2009 06:17:00 +0000

Following code will show you how to get time difference in second from a two datetime values. Remember datetime should be in this format: yyyy-mm-dd hr:min:sec

$dbdate_seconds = strtotime($dbdate);
$inputdate_seconds = strtotime($inputdate);

$time_diff = $dbdate_seconds - $inputdate_seconds;

//you will get the time difference in seconds, divide by 60 to make it minutes

or you can use the mysql TIMEDIFF

$query = select TIMEDIFF(field_name, '$input_date') from tbl_name where condition

Expresso Best Way to Learn Regular Expression

kusalsmail@yahoo.com (Kusal) — Sat, 28 Mar 2009 12:24:00 +0000

Expresso is a free tool where you can master the art of writing complex regular expressions in no time. You also got a very good tutorial within the software to get started on regular expressions.
It also contain regular expression library to assist you in common problems.

http://www.ultrapico.com/Expresso.htm

Notice: Undefined index: (php)

kusalsmail@yahoo.com (Kusal) — Wed, 25 Mar 2009 12:57:00 +0000

Notice: Undefined index:
Sometimes you get this notice (This is not a error). lets see a example why you get this notice or warning.


<?php 

error_reporting(E_ALL);

echo $name= $_POST["name"];
echo $number= $_POST["number"];
 
?> 

<html>
<body>
<form name="form1" method="POST" action="">
<table border="0">
<tr>
<td>Name :</td>
<td> <input type="text" name="name"  /></td>
</tr>
<tr>
<td>Tel: Number :</td>
<td> <input type="text" name="number"  /></td>
</tr> 
<tr>
<td> </td>
<td><input type="submit" name="sub" value="Add"  /></td>
</tr>
</table>
</form>
</body>
</html>

When you initially load this page you will get a notice like following.

This notice is shown because your php.ini file has enabled Notices to display or you may have a set error_reporting() function to E_ALL or to display notices.

The reason for the notice because when the page is load it search for the $_POST["name"] and $_POST["number"] which actually not available, $_POST indexes are set when you submit the form not when you just load the page.

Solutions:
1) you can fix the error reporting levels in php.ini or by error_reporting() function.

or

Change the code like this.


if(isset($_POST['sub']))
{
 echo $name= $_POST["name"];
 echo $number= $_POST["number"];
}

This will make the code run only when you submit the add button.

How to change Mysql database storage engine

kusalsmail@yahoo.com (Kusal) — Sun, 22 Mar 2009 06:02:00 +0000

The default Mysql database storage engine is MyISAM. But if you want to implement foreign key constraints you should have the InnoDB storage engine. Lets see how we can change it. I will use the phpMyAdmin to do the operation.

Select the table you want and press the "Operations" tab.

Now select a Storage Engine you like from the drop down menu and press "Go" button.

Find JavaScript Errors Easily

kusalsmail@yahoo.com (Kusal) — Thu, 19 Mar 2009 16:41:00 +0000

If you facing a hell of a time finding JavaScript errors you can use Firefox error console to get descriptive JavaScript errors. There are tools like Firebug, but error console comes built in Firefox so no need to worry about install. You find CSS errors also.

Goto tools -> error console

ServerSide JavaScript will be popular like php

kusalsmail@yahoo.com (Kusal) — Mon, 16 Mar 2009 06:12:00 +0000

In the near future ServerSide JavaScript (SSJS) will be popular like php. Eventhough ServerSide JavaScript (SSJS) has been around for sometime it never got wide publicity. Been a object oriented and a simple scripting language in nature it will be pretty easy to write dynamic code using (SSJS). I first heard about ServerSide JavaScript (SSJS) from Aptana Jaxer.

You can find a list of ServerSide JavaScript (SSJS) uses from this wiki article.
http://en.wikipedia.org/wiki/Server-side_JavaScript

How to integrate a web editor (Rich Text Editor)

kusalsmail@yahoo.com (Kusal) — Sat, 14 Mar 2009 05:41:00 +0000

Lets see how to integrate TinyMCE into a web page

Goto http://tinymce.moxiecode.com and download the TinyMCE, select the main package to download.

Now click on the example tab

Now you can see the full featured example. You can find more example links also.
Click on the View Source.

Click on the view source.

Now copy and paste the code to your html file.

Remember to correctly change the installation path

Now you are done, Experiment with other examples also. If you need any help you can get my email from the profile.

Amazon.com Widgets

How to use MD5 and SHA1 in php (cryptography)

kusalsmail@yahoo.com (Kusal) — Thu, 12 Mar 2009 11:27:00 +0000

MD5 - Message-Digest algorithm 5
SHA1 - Secure Hash Algorithm
These are the two main inbuilt functions used in php to encrypt sensitive data.
SHA1 is now consider and recommended to be more secure than MD5.


<?php

echo md5('password'); //5f4dcc3b5aa765d61d8327deb882cf99

echo '<br /><br />';

echo sha1('password'); //5baa61e4c9b93f3f0682250b6cf8331b7ee68fd8

?>

If you run above code your will see the encrypted string of the word password.
You can clearly see that sha1 is longer than md5. sha1 is encrypted with more bits.

Once a value is encrypted you cannot reaverse the process. So how you gonna check the values again? check the following code.


<?php

$stored_password = sha1('my_pass');

$pass = $_POST['pass'] // input password

if($stored_password == sha1($pass))
{
 echo 'correct password';
}
else
{
 echo 'wrong password';
}

?>

Always remember to encrypt the input data with relevant encryption method before comparing values.

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How to make the site feed available for browsers

kusalsmail@yahoo.com (Kusal) — Tue, 10 Mar 2009 15:47:00 +0000

IE RSS feed browser icon

Firefox RSS feed browser icon

You can easily make available your feed to IE or Firefox by adding one simple line of code.
Add this line right after tag.


<link rel="alternate" type="application/rss+xml" title="siteName.com RSS News Feed" href="feed path" />

Thats it now your feed is available automatically by Firefox and IE, This will also help feed aggregator automatically find and index your feed.

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