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Visit my blog and read some informative posts about web development, web design, S.E.O, social media, and internet marketing.

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MySQL Tutorial

MySQL Tutorial Welcome to Derek Banas’ MySQL tutorial. He cover 95 – 98% of everything you’ll ever need to know in one video. Derek covers the following topics: Creating / destroying databases. Creating / destroying tables. Data types. NULL. DEFAULT.…Read more...

MySQL Tutorial

Welcome to Derek Banas’ MySQL tutorial. He cover 95 – 98% of everything you’ll ever need to know in one video.

Derek covers the following topics:

Creating / destroying databases.
Creating / destroying tables.
Data types.
NULL.
DEFAULT.
ENUM.
AUTO_INCREMENT.
Primary keys.
Foreign keys.
Atomic data.
Normalized.
DESCRIBE.
INSERT.
ALTER.
SELECT.
SHOW.
RENAME.
WHERE.
Logical operators.
Comparison operators.
ORDER BY.
GROUP BY.
LIMIT.
String operators.
Joins.
LIKE.
DISTINCT.
Math functions.
And more.

Cheat Sheet / Transcript is Here : http://goo.gl/Z1p50M.

Best MySQL Book : http://goo.gl/zJC254.

Support Derek on Patreon : https://www.patreon.com/derekbanas.

source

Things Laravel Made Me Believe – Jeffrey Way – Laracon EU 2015

Laravel’s extreme success and popularity can be reduced to a single word: simplicity. Surprisingly, however, writing simple code is no easy feat! This talk will discuss key decisions that led to Laravel’s success, while, in the process, reviewing a number…Read more...

Laravel’s extreme success and popularity can be reduced to a single word: simplicity. Surprisingly, however, writing simple code is no easy feat! This talk will discuss key decisions that led to Laravel’s success, while, in the process, reviewing a number of lessons-learned from over-architecting applications.

This talk was given at Laracon EU 2015. Visit http://laracon.eu/2015 for more talks.

source

Programming Bookmarks 2012 to 2015

Since 2012, I have consulted many external resources when confronted with certain programming challenges. While most of the bookmarks discuss trivial material – sometimes I need a little reminder every now and then. It was quite nostalgic going over these bookmarks…Read more...

Since 2012, I have consulted many external resources when confronted with certain programming challenges. While most of the bookmarks discuss trivial material – sometimes I need a little reminder every now and then. It was quite nostalgic going over these bookmarks and seeing what I’ve learned – it felt even better knowing I remembered most of the material discussed.

I quickly combed over the bookmarks I had, and organised them into generic categories. This post is going to be incredibly long, so hopefully I have organised the bookmarks well enough for anyone viewing them. You can view these bookmarks below:

Ruby, Rails
MySQL, PostgreSQL, Databases
PHP
- Laravel
- Drupal
- Yii
- Other
Javascript, JQuery, AJAX
Linux, Unix, Bash, LAMP
CSS

Ruby, Rails

MySQL, PostgreSQL, Databases

PHP

Laravel

Drupal

Yii

Other

Javascript, JQuery, AJAX

Linux, Unix, Bash, LAMP

CSS

Hello World in 40 Programming Languages

Today I woke up and asked myself how many programming languages are out there. I find it really interesting that there are quite a few programming languages – with each one having various strengths and weaknesses. While it is good…Read more...

Today I woke up and asked myself how many programming languages are out there. I find it really interesting that there are quite a few programming languages – with each one having various strengths and weaknesses. While it is good to know as many programming languages as possible, I believe it is more important to understand the fundamental concepts behind them. Examples of such concepts include: looping and conditional structures, sequence of commands, variables, primitive data types, and Object Oriented Programming (for some programming languages).

You may notice that some examples do not have syntax highlighting… At the moment, I’m using a WordPress plugin to manage this – called ‘SyntaxHighligher‘ by Alex Gorbatchev. It doesn’t seem to cover some of the languages listed here, so may be an opportunity to make some contributions…

With the above being said, I thought of exploring variants of the ever-so-popular “Hello World” program in 40 different programming languages. You can also view many more examples by going down to the sources section. Below are the 40 examples I have chosen:

ActionScript3

trace("Hello, World!");

this.createTextField("hello_txt",0,10,10,100,20);
this.hello_txt.text="Hello, World!";

Ada

with TEXT_IO;

procedure HELLO is
begin
 TEXT_IO.PUT_LINE ("Hello, World!");
end HELLO;

ASP.NET
```
Response.Write("Hello, World!")
```
Bash
```
#!/bin/sh
echo "Hello, World!"
```

C# (C Sharp)

using System;
class HelloWorld
{
 static void Main()
 {
 System.Console.WriteLine("Hello, World!");
 }
}

C

#include 

/* Hello */
int main(void)
{
 printf("Hello, World!");
 return 0;
}

Cobol

IDENTIFICATION DIVISION.
PROGRAM-ID. HELLO-WORLD.

ENVIRONMENT DIVISION.

DATA DIVISION.

PROCEDURE DIVISION.
DISPLAY "Hello, World!".
STOP RUN.

Cocoa (Objective C)

#import <Cocoa/Cocoa.h>
@interface hello : NSObject {
}
@end

@implementation hello

-(void)awakeFromNib
{ 
 NSRunAlertPanel(@"Message from your Computer", @"Hello, World!", @"Hi!",
 nil, nil);
}

@end

Dart
```
main() 
{
  print('Hello, World!');
}
```

Delphi

program Hello_World;
uses 
 Windows;

begin
 ShowMessage("Hello, World!");
end.

Erlang

-module(hello).
-export([hello_world/0]).

hello_world() -> io:fwrite("Hello, World!\n").

F#
```
print_endline "Hello, World!"
```

Fortran

PROGRAM HELLO
 PRINT *, 'Hello, World!'
 END

Go

package main
import fmt "fmt"

func main() 
{
   fmt.Printf("Hello, World!\n");
}

Gtk# in C#

using Gtk;
using GtkSharp;
using System;

class Hello {
 static void Main()
 {
   Application.Init ();

   Window window = new Window("");
   window.DeleteEvent += cls_evn;
   Button close = new Button ("Hello world");
   close.Clicked += new EventHandler(cls_evn);

   window.Add(close);
   window.ShowAll();

   Application.Run ();
 }
 static void cls_evn(object obj, EventArgs args)
 {
   Application.Quit();
 }
}

Gtk+ in C++

#include 
#include <gtkmm/main.h>
#include <gtkmm/button.h>
#include <gtkmm/window.h>
using namespace std;

class HelloWorld : public Gtk::Window {
public:
 HelloWorld();
 virtual ~HelloWorld();
protected:
 Gtk::Button m_button;
 virtual void on_button_clicked();
};

HelloWorld::HelloWorld()
: m_button("Hello, World!") {
 set_border_width(10);
 m_button.signal_clicked().connect(SigC::slot(*this,
 &HelloWorld::on_button_clicked));
 add(m_button);
 m_button.show();
}

HelloWorld::~HelloWorld() {}

void HelloWorld::on_button_clicked() {
 cout << "Hello, World!" << endl;
}

int main (int argc, char *argv[]) {
 Gtk::Main kit(argc, argv);
 HelloWorld helloworld;
 Gtk::Main::run(helloworld);
 return 0;
}

Haskell

module Main (main) where

main = putStrLn "Hello, World!"

Java, Java Swing, Java SWT

Java

public class HelloWorld {
 public static void main(String[] args) {
 System.out.println("Hello, World!");
 }
}

Java Swing

import javax.swing.JOptionPane;

public class Hello 
{
 public static void main(String[] args) 
 {
 JOptionPane.showMessageDialog(null, "Hello, World!");
 }
}

Java SWT

import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.RowLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Label;

public class SWTHello {
 public static void main (String [] args) {
 Display display = new Display ();
 final Shell shell = new Shell(display);
 RowLayout layout = new RowLayout();
 layout.justify = true;
 layout.pack = true;
 shell.setLayout(layout);
 shell.setText("Hello, World!");
 Label label = new Label(shell, SWT.CENTER);
 label.setText("Hello, World!");
 shell.pack();
 shell.open ();
 while (!shell.isDisposed ()) {
 if (!display.readAndDispatch ()) display.sleep ();
 }
 display.dispose ();
 }
}

JavaFX Script

var win = new Frame();
win.title = "Hello World!";
win.width = 400;
var label = new Label();
label.text = "Hello World!";
win.content = label;
win.visible = true;

JavaScript

// Write to DOM
document.write('Hello, World!');

//Alert
alert('Hello, World!');

LaTex

\documentclass{article}
\begin{document}
 Hello, World!
\end{document}

Lisp

(format t "Hello World!~%")

(write-line "Hello World!")

Matlab
```
disp('Hello world')
```

NewtonScript

baseview :=
 {viewBounds: {left: -3, top: 71, right: 138, bottom: 137},
 viewFlags: 581,
 declareSelf: 'base,
 _proto: protoFloatNGo,
 debug: "baseview"
 };

textview := * child of baseview *
 {text: "Hello World!",
 viewBounds: {left: 33, top: 24, right: 113, bottom: 46},
 viewFlags: 579,
 _proto: protoStaticText,
 debug: "textview"
 };

Pascal

program hello;

begin
writeln('Hello, World!');
end.

Pdf

%PDF-1.0
1 0 obj
<< /Type /Catalog /Pages 3 0 R /Outlines 2 0 R >>
endobj
2 0 obj
<< /Type /Outlines /Count 0 >>
endobj
3 0 obj
<< /Type /Pages /Count 1 /Kids [4 0 R] >>
endobj
4 0 obj
<<
/Type /Page
/Parent 3 0 R
/Resources << /Font << /F1 7 0 R >>/ProcSet 6 0 R
>>
/MediaBox [0 0 612 792]
/Contents 5 0 R
>>
endobj
5 0 obj
<< /Length 44 >>
stream
BT
/F1 24 Tf
100 100 Td (Hello World) Tj
ET
endstream
endobj
6 0 obj
[/PDF /Text]
endobj
7 0 obj
<< /Type /Font /Subtype /Type1 /Name /F1 /BaseFont /Helvetica /Encoding /MacRomanEncoding >>
endobj
xref
0 8
0000000000 65535 f
0000000009 00000 n
0000000074 00000 n
0000000120 00000 n
0000000179 00000 n
0000000322 00000 n
0000000415 00000 n
0000000445 00000 n
trailer
<< /Size 8 /Root 1 0 R >>
startxref
553
%%EOF

Perl
```
# Hello
print "Hello, World!\n";
```

PHP

<?php 
    echo "Hello world!";
?>

//Or

<?php 
    print 'Hello, World!' . PHP_EOL;
?>

Powershell

# Filename: Hello.ps1
Write-Host
Write-Host 'Hello World!'
Write-Host "Good-bye World! `n"
# end of script

Python

print "Hello, World!";

print("Hello, World!")

Qt toolkit (C++)

#include 
#include 

int main(int argc, char *argv[])
{
  QApplication app(argc, argv);
  QLabel salut("Hello World!");
  salut.show();
  return app.exec();
}

Ruby
```
puts "Hello, World!"
```

Scala

object HelloWorld extends Application {
 Console.println("Hello, World!");
}

Rust
```
io::println("hello?");
```
Smalltalk
```
Transcript show: 'Hello, World!'; cr
```

SQL

CREATE TABLE message (text char(15));
INSERT INTO message (text) VALUES ('Hello, World!');
SELECT text FROM message;
DROP TABLE message;

#OR

SELECT 'Hello, World!';

SVG

<?xml version="1.0" encoding="utf-8" standalone="no"?>
<svg width="240px" height="100px" viewBox="0 0 240 100" 
     xmlns="http://www.w3.org/2000/svg">
 <title>Hello World</title>
 <g>
 <text x="20" y="50">Hello World</text>
 </g>
</svg>

Swift
```
println("Hello World!")
```

VB.NET (Visual Basic .NET)

Class HelloWorldApp
 Shared Sub Main()
 System.Console.WriteLine("Hello, World!")
 End Sub
End Class

XML

<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="HelloWorld.xsl" ?>
<!-- Hello in XML -->
<text>
   <string>Hello, World!</string>
</text>

Sources

Top 9 Animation Libraries for 2016

As the various types of web technologies have evolved, so to have the animation libraries that spice up web pages. As a developer who primarily deals with the back-end, I find such animation libraries very convenient and time-saving. As client…Read more...

As the various types of web technologies have evolved, so to have the animation libraries that spice up web pages. As a developer who primarily deals with the back-end, I find such animation libraries very convenient and time-saving. As client demands increase, and the imagination of developers grow, these libraries can really make visions and dreams come alive (in the browser anyway). Courtesy of SitePoint, I have listed their top nine animation libraries below – some of which I will be exploring in the near future.

Animate.css.

Creators: Daniel Eden.
Released: 2013.
Current Version: 3.4.0.
Popularity: 25,000+ stars on GitHub.
Description: “A cross-browser library of CSS animations. As easy to use as an easy thing”.
Library Size: 55.2 kB.
GitHub: https://github.com/daneden/animate.css.
License: MIT.

Bounce.js.

Creators: Tictail.
Released: 2014.
Current Version: 0.8.2.
Popularity: 3,500+ stars on GitHub.
Description: “Create beautiful CSS3 powered animations in no time”.
Library Size: 16 kB.
GitHub: https://github.com/tictail/bounce.js.
License: MIT.

Magic Animations.

Creators: Christian.
Released: 2014.
Current Version: 1.1.0.
Popularity: 3,400+ stars on GitHub.
Description: “CSS3 Animations with special effects”.
Library Size: 36.5 kB.
GitHub: https://github.com/miniMAC/magic.

DynCSS.

Creators: Vittorio Zaccaria.
Released: 2014.
Current Version: 0.8.1.
Popularity: 190+ stars on GitHub
Description: “Make your site come to life with Dynamic CSS”.
GitHub: https://github.com/vzaccaria/DynCSS.

CSShake.

Creators: Lionel.
Released: 2014.
Popularity: 2,000+ stars on GitHub.
Description: “CSS classes to move your DOM!”
Library Size: 78.8 kB.
GitHub: https://github.com/elrumordelaluz/csshake.
License: MIT.

Hover.css.

Creators: Ian Lunn.
Released: 2014.
Current Version: 2.0.2.
Popularity: 10,700+ stars on GitHub.
Description: “Easily apply to your own elements, modify or just use for inspiration”.
Library Size: 104.2 kB.
GitHub: https://github.com/IanLunn/Hover.
License: MIT.

Velocity.js.

Creators: Julian Shapiro.
Released: 2014.
Current Version: 1.2.2.
Popularity: 8,700+ stars on GitHub.
Description: “Accelerated JavaScript animation”.
Library Size: 34.8 kB.
GitHub: https://github.com/julianshapiro/velocity.
License: MIT.

Favico.js.

Creators: Miroslav Magda.
Released: 2013.
Current Version: 0.3.9.
Popularity: 4,900+ stars on GitHub.
Description: “Make use of your favicon with badges, images or videos”.
Library Size: 8.9 kB.
GitHub: https://github.com/ejci/favico.js.
License: MIT.

AniJS.

Creators: anijs.
Released: 2014.
Current Version: 0.9.3.
Popularity: 2,500+ stars on GitHub.
Description: “A Library to Raise your Web Design without Coding”.
Library Size: 10.5 kB.
GitHub: https://github.com/anijs/anijs.
License: MIT.

Source: Top 9 Animation Libraries to Use in 2016.

Other Animation Libraries Sources.

Laravel – Troubleshooting Apache 500 errors

During my time with Laravel, I have encountered a fair share of errors. One particular error I have encountered frequently is Apache’s 500 ‘internal server error’ – which means something has gone wrong on the server-side. While there are numerous…Read more...

During my time with Laravel, I have encountered a fair share of errors. One particular error I have encountered frequently is Apache’s 500 ‘internal server error’ – which means something has gone wrong on the server-side. While there are numerous StackOverflow threads explaining and troublehooting this Apache error, this is generally my troubleshooting experience with Laravel.

With regard to the 500 error, there are four possibilities as to the cause…

Check Laravel Error Logs.

One is that there are possible scripting or database issues. A good place to check diagnostic information is in the log files – which you can find in the ‘storage/logs’ directory.

Check Laravel Application Key.

After installing and updating libraries via Composer, you may need to run ‘php artisan key:generate’. This key is used for encryption of data (e.g. sessions, passwords), and is important for Laravel to function properly. When you run this command, the key is generated with a randomized string defined in your .env file (for example: APP_KEY=someRandomString).

Check Apache Server Logs.

To investigate further, you may need to look at your server logs as well. For example, if you are using an Apache-based server, you can view error logs in ‘/var/log/apache2’. Here, I would usually view contents of the ‘error.log’ file.

Properly Configured .htaccess File.

The .htaccess file is essential, and required (for Apache servers), for Laravel’s routing to work. Deleting the .htaccess file, or having an incorrectly-condifured .htaccess file can cause 500 errors. In an example file on my GitHub repository, I have included extra configuration to filter out spambots and address some rendering performance issues. If some of the extra configuration is causing issues, try using the default .htaccess configuration, as below:

<IfModule mod_rewrite.c>

    #Convert www to non-www
    RewriteCond %{HTTP_HOST} ^www\.(.+)$ [NC]
    RewriteRule ^ http://%1%{REQUEST_URI} [R=301,L]

    <IfModule mod_negotiation.c>
        Options -MultiViews
    </IfModule>

    RewriteEngine On
    # Redirect Trailing Slashes...
    RewriteRule ^(.*)/$ /$1 [L,R=301]

    # Handle Front Controller...
    RewriteCond %{REQUEST_FILENAME} !-d
    RewriteCond %{REQUEST_FILENAME} !-f
    RewriteRule ^ index.php [L]

</IfModule>

Other Considerations

If you are using Apache, are you using the root domain or a sub-domain? Are you using shared hosting or a VPS? What does your site’s vhost file look like?

If you are using a VPS, your vhosts file should look similar to:

For a Root Domain.

# FOR ROOT DOMAIN
<VirtualHost youripadress:80>

    ServerName yourdomain.com
    ServerAdmin webmaster@localhost
 
    DocumentRoot "/var/www/yourdomain.com/public"
    <Directory "/var/www/yourdomain.com/public">
        Options Indexes FollowSymLinks MultiViews
        AllowOverride All
        Order allow,deny
        allow from all
    </Directory>

    ErrorLog ${APACHE_LOG_DIR}/error.log

    # Possible values include: debug, info, notice, warn, error, crit,
    # alert, emerg.
    LogLevel warn
    CustomLog ${APACHE_LOG_DIR}/access.log combined

</VirtualHost>

For a Sub-Domain.

# FOR SUBDOMAIN
<VirtualHost youripadress:80>

    ServerName subdomain.yourdomain.com
    ServerAdmin webmaster@localhost

    # Here, I would place subdomain files in a separate directory
    # within 'yourdomain.com'. Depending on your hosting and domain
    # setup, you will need to create CNAME and A records for your
    # subdomain when pointing the domain to your hosting server.
    DocumentRoot "/var/www/yourdomain.com/subdomain/public"
    <Directory "/var/www/yourdomain.com/subdomain/public">
        Options Indexes FollowSymLinks MultiViews
        AllowOverride All
        Order allow,deny
        allow from all
    </Directory>

    ErrorLog ${APACHE_LOG_DIR}/error.log

    # Possible values include: debug, info, notice, warn, error, crit,
    # alert, emerg.
    LogLevel warn
    CustomLog ${APACHE_LOG_DIR}/access.log combined
</VirtualHost>

Collaboration.

If you still have trouble after using the above suggestions, please let me know. If you encounter Apache 500 errors with your Laravel project, feel free to comment about your experiences here. I’m sure we can all learn and collaborate from each-other’s feedback :).

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