Search and replace the the string in Javascript

By Administrator on 1:56 AM in javascript

replace(search str, replace_str): Replaces the very first occuance oif the search string.

string = 'Praise the Lord';
string = replace('Praise', 'Jesus is');
alert(string);

This returns: "Jesus is the Lord"

Implode string with ruby array values using join()

By Administrator on 9:30 AM in ruby

join() method implod the character or string between the single dimension array elements.

E.g:
x = [1,2,3,4]
x.join(",") #This returns "1,2,3,3"

RUBY: Each loop statment in ruby on rails

By Administrator on 4:30 AM in ruby

rows.each do |row|
puts row.id
end

Here rows is an array.

RUBY: Creating dynamic directory in ruby

By Administrator on 2:08 AM in ruby

system() method executes any commands that we can able to execute through terminal or konsole(console).

e.g
folder = "/tmp"
system("mkdir #{folder}") if !File.directory?(folder)

If you found any errors in the above coding , try to include the ftools library.

e.g
require 'ftools'
folder = "/tmp"
system("mkdir #{folder}") if !File.directory?(folder)

Write a file oin ruby on rails

By Administrator on 12:12 AM in

log_path = '/home/project/logs'
system("mkdir #{log_path}") if !File.directory?(log_path)
log_content = "test content"
File.open("#{log_path}/log_#{Time.now.to_i}.txt", 'a') { |file|
file.write "#{log_content}"
}

Tick Symbol HTML Decimal Codes

By Administrator on 3:06 AM in html

☐ - HTML decimal: ☐
☑ - HTML decimal: ☑
✓ - HTML decimal: ✓
✔ - HTML decimal: ✔

RUBY: Get current time stamp in ruby

By Administrator on 12:09 AM in ruby, rubyonrails, time

Getting current time is very straight forward here.

The code is


Time.now # Returns Fri Mar 08 13:27:24 +0530 2013

Time.now.to_i # Returns the unix timestamp value 1362729785

That's it.

RUBY: Ruby on Rails - string replace

By Administrator on 10:30 PM in ruby, rubyonrails

gsub

gsub() is the always very useful function in ruby.

Syntax:

string.gsub("<search char>","<replace Char>")

string.gsub(/'/,"") #replce/remove single quotes from the string

You should be careful that the string variable should not have a nil value. Otherwise it will rise a nil exception.

Ruby On Rails - Getting Started

By Administrator on 9:54 AM in ruby

Ruby on Rails, often shortened to Rails, is an open source full-stack web application framework for the Ruby programming language. Ruby on Rails runs on the general-purpose programming language Ruby, which predates it by more than a decade. Rails is a full-stack framework, meaning that it gives the web developer the ability to create pages and applications that gather information from the web server, talk to or query the database, and render templates out of the box. As a result, Rails features a routing system that is independent of the web server.

Add two Time values in php

By Administrator on 9:50 AM in php

PHP: Get full web page URL from address bar in php

By Administrator on 9:49 AM in php

There are two functions in php to get full url from address bar.

1. $_SERVER['HTTP_HOST']
2. $_SERVER['REQUEST_URI']

$_SERVER['HTTP_HOST'] this function will show only server name.
$_SERVER['REQUEST_URI'] this function will show you the path to file of your url.

Sample Code:
$url="http://".$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'];

PHP: Create CSV file format in php

By Administrator on 7:00 AM in php

fputcsv

(PHP 5 >= 5.1.0RC1)
fputcsv -- Format line as CSV and write to file pointer

Description

int fputcsv ( resource handle [, array fields [, string delimiter [, string enclosure]]] )

fputcsv() formats a line (passed as a fields array) as CSV and write it to the specified file handle. Returns the length of the written string, or FALSE on failure.
The optional delimiter parameter sets the field delimiter (one character only). Defaults as a comma: ,.
The optional enclosure parameter sets the field enclosure (one character only) and defaults to a double quotation mark: ".

Example 1. fputcsv() example



$list = array (

    'aaa,bbb,ccc,dddd',

    '123,456,789',

    '"aaa","bbb"');

$fp = fopen('file.csv', 'w');



foreach ($list as $line) {

    fputcsv($fp, split(',', $line));

}

fclose($fp);?>

What Is PHP?

By Administrator on 7:00 AM in php

What Is PHP? PHP stands for PHP: Hypertext Preprocessor, a recursive acronym. It is mainly a Web server side scripting language. But it can also be used for other purposes.

PHP was originally created by Rasmus Lerdorf in 1995 as a simple Web page generation tool named as PHP/FI (Personal Home Page/Forms Interpreter). Today it becomes the number one of server side scripting languages.

Main features of PHP:

* Cookies - PHP transparently supports HTTP cookies.
* Sessions - PHP supports sessions to allow you to preserve certain data across subsequent accesses.
* Connection handling - PHP maintains a connection in 3 possible states: NORMAL, ABORTED, and TIMEOUT.
* Using remote files - PHP allows you to open remote files with Internet protocols like HTTP or FTP.
* Persistent Database Connections - PHP supports persistent connections to database servers.
* File uploads - PHP allows Web users to upload single or multiple files.
* Safe mode - PHP supports a safe mode with many built-in functions restricted or disabled.
* Command line - PHP supports many command line options.

What is the difference between Primary Key and Unique key?

By Administrator on 6:58 AM in php

Primary Key: A column in a table whose values uniquely identify the

rows in the table. A primary key value cannot be NULL.

Unique Key: Unique Keys are used to uniquely identify each row in the

table. There can be one and only one row for each unique key value. So

NULL can be a unique key.There can be only one primary key for a table but there can be more

than one unique for a table.

PHP: Performance Tips - For Loop

By Administrator on 6:50 AM in php

Don't use for($i=0; $i<=count($arrPerson); $i++) { . . }
instead of use for($i=0,$total = count($arrPerson); $i<$total; $i++) { . . }.
The previous one will call count function for each iteration of the loop while the second one will call count function just once

PHP: What is wamp? lamp? XAMPP?

By Administrator on 6:48 AM in php

LAMP = Linux Apache MySQL PHP/Perl/Python

WAMP = Windows Apache MySQL PHP/Perl/Python

XAMPPX = (any of four different operating systems), Apache, MySQL, PHP and Perl

XAMPP's name is an acronym for:

Connect the Mysql Database from local client Computer

By Administrator on 6:47 AM in php

Create the New privilege for the Client computer name as the host name.
Then try the following sample code into your client computer,
It will be work exactly.

Sample PHP Code :
$con=mysql_connect('IP Address','root','') or die("Database Connection Failed
". mysql_error());
mysql_select_db('',$con);
$test_query=mysql_query('SELECT * FROM
'); while($row=mysql_fetch_array($test_query)) { echo $row[column].' '; } ?>

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