Category Archives: code

HMVC with Codeigniter

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HMVC is an evolution of the MVC pattern used for most web applications today. It came about as an answer to the salability problems apparent within applications which used MVC. The solution presented in the JavaWorld web site, July 2000, proposed that the standard Model, View, and Controller triad become layered into a “hierarchy of parent-child MCV layers“. The image below illustrates how this works:

HMVC structure

Key advantages to implementing the HMVC pattern in your development cycle:

  • Modularization: Reduction of dependencies between the disparate parts of the application.
  • Organization: Having a folder for each of the relevant triads makes for a lighter work load.
  • Reusability: By nature of the design it is easy to reuse nearly every piece of code.
  • Extendibility: Makes the application more extensible without sacrificing ease of maintenance.

These advantages will allow you to get M.O.R.E out of your application with less headaches.

Download and Tutorial : https://bitbucket.org/wiredesignz/codeigniter-modular-extensions-hmvc

NOTE : Need some adjustments on several parts.

NetBeans 7.2 : Dreamweaver in Linux and more.

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NB_box72

This is an amazingly powerful tool that equally powerful to work as a platform framework for Java desktop applications and as an IDE (integrated development environment) while developing something with PHP, JavaScript, Scala, Clojure, C, C++, Groovy, Ruby, Python and many more.

The NetBeans IDE runs virtually anywhere given the fact that a JVM is installed. It is developed in Java. You can download it here: http://netbeans.org/downloads

I recommend Net-beans 7.2

How to change post thumbnail crop position in wordpress

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I get many complaints about wordpress thumbnail (aka post featured image in wordpress 3) crop position lately. Many of my clients tell that they need top part of the image as thumbnail rather than the useless middle part. That’s why i dived into the core and got the solution for cropping top part of the thumbnails.

Here i will show you how to change crop behaviour of wordpress.
 

Cropping function is called image_resize and it is located in media.php.

Step1. Open media.php file under wp-includes folder.
Step2. Find the function named “image_resize_dimensions” (Around line 309). Unfortunately this function is not pluggable and doesn’t use any hooks so we will edit it directly. Find the lines:

$s_x = floor( ($orig_w - $crop_w) / 2 );$s_y = floor( ($orig_h - $crop_h) / 2 );

tep3. Those two variables define the start point of crop that will be used. Here is a sample image that will be cropped with those variables shown:

Step4. If you want top of part of the image as post featured image then $s_y value must remain zero. So we change that line to:

$s_y = 0; //floor( ($orig_h - $crop_h) / 2 );

Step5. Save the file and upload it to wp-includes folder.

Last Step. A post image is cropped at the first time it is uploaded. To update thumbnails you need this great plugin calledRegenerate Thumbnails. This plugin takes post thumbnails and crops them again using your latest media settings. After you install it click on the “Regenerate All Thumbnails” button under tools. It will automatically crop all the post thumbnails again. This will take a minute or two depending on your server and number of posts you have. After the regeneration is complete all your thumbnails will be cropped from top.

SQL / MySQL SERVER – Count Duplicate Records – Rows

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In my previous article SQL SERVER – Delete Duplicate Records – Rows, we have seen how we can delete all the duplicate records in one simple query. In this article we will see how to find count of all the duplicate records in the table. Following query demonstrates usage of GROUP BY, HAVING, ORDER BY in one query and returns the results with duplicate column and its count in descending order.

SELECT YourColumn, COUNT(*) TotalCount
FROM YourTable
GROUP BY YourColumn
HAVING COUNT(*) > 1
ORDER BY COUNT(*) DESC


PHP Simple CAPTCHA CODE using SESSION

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Create this file :

eg : captcha.php

<?php
session_start();
$ranStr = md5(microtime());
$ranStr = substr($ranStr, 0, 6);
$_SESSION[‘cap_code’] = $ranStr;
$newImage = imagecreatefromjpeg(“cap_bg.jpg”);
$txtColor = imagecolorallocate($newImage, 0, 0, 0);
imagestring($newImage, 5, 5, 5, $ranStr, $txtColor);
header(“Content-type: image/jpeg”);
imagejpeg($newImage);
?>

FORM like this

<form action=”” method=”post”>
<label>Name:</label><br/>
<input type=”text” name=”name” id=”name”/>
<label>Message:</label><br/>
<textarea name=”msg” id=”msg“></textarea>
<label>Enter the contents of image</label>
<input type=”text” name=”captcha” id=”captcha” />
<img src=’captcha.php’ />
<input type=”submit” value=”Submit” id=”submit”/>
</form>

ACTION PAGE : 

<?php
if ($_SERVER[‘REQUEST_METHOD’] == ‘POST’)
{
if ($_POST[‘captcha’] == $_SESSION[‘cap_code’]) 
{
// Captcha verification is Correct. Do something here!
}
else 
{
// Captcha verification is wrong. Take other action
}
}
?>

Thank you.

Reset default browser style CSS

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/* http://meyerweb.com/eric/tools/css/reset/ 
   v2.0 | 20110126
   License: none (public domain)
*/

html, body, div, span, applet, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, acronym, address, big, cite, code,
del, dfn, em, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
b, u, i, center,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, canvas, details, embed, 
figure, figcaption, footer, header, hgroup, 
menu, nav, output, ruby, section, summary,
time, mark, audio, video {
	margin: 0;
	padding: 0;
	border: 0;
	font-size: 100%;
	font: inherit;
	vertical-align: baseline;
}
/* HTML5 display-role reset for older browsers */
article, aside, details, figcaption, figure, 
footer, header, hgroup, menu, nav, section {
	display: block;
}
body {
	line-height: 1;
}
ol, ul {
	list-style: none;
}
blockquote, q {
	quotes: none;
}
blockquote:before, blockquote:after,
q:before, q:after {
	content: '';
	content: none;
}
table {
	border-collapse: collapse;
	border-spacing: 0;
}