How to install react native in macOS

 Install node js Download from here

 Run bellow command.

sudo npm install -g expo-cli

expo init AwesomeProject

cd AwesomeProject

npm start #you can also use: expo start

how can instal java and run java program

download java
Go to http://java.sun.com/javase/downloads/index.jsp
and clik on Java Platform (JDK)
and install it

Second step:
write you code
Example:
class Example
{
public static void main(String args[])
{
System.out.println("This is Example class");

}
}


Suppose you java installation path is
C:\Program Files\Java

save it C:\Program Files\Java\jdk1.6.0_23\bin\Example.java

Then click start->run
then write cmd or command
Then type cd\ (enter)
c:\> cd Program Files (enter)
c:\Program Files> cd Java (enter)
c:\Program Files\Java> cd jdk1.6.0_23 (enter)
c:\Program Files\Java\jdk1.6.0_23> cd bin (enter)
Now run you java program

c:\Program Files\Java\jdk1.6.0_23\bin> javac Example.java
c:\Program Files\Java\jdk1.6.0_23\bin> java Example

It is simple you face any problem then you can submit cooment

Authorize.Net Direct Post Method (DPM)

you can find more detail of Authorize.Net Direct Post Method (DPM) on http://www.articlesrain.com/tutorial/index.php/2010/12/authorize-net-direct-post-method-dpm/

How to add days, weeks, months to any date ?

$date = date("Y-m-d");// current date

$date = strtotime(date("Y-m-d", strtotime($date)) . " +1 day");
$date = strtotime(date("Y-m-d", strtotime($date)) . " +1 week");
$date = strtotime(date("Y-m-d", strtotime($date)) . " +2 week");
$date = strtotime(date("Y-m-d", strtotime($date)) . " +1 month");
$date = strtotime(date("Y-m-d", strtotime($date)) . " +30 days");
echo date("Y-m-d", $date);//Now your can see added date

how can login in ilias with own page

Suppose my site ishttp://www.xyz.com/">www.xyz.com/ilias is installied onhttp://www.xyz.com/lms">www.xyz.com/lmsthen you can create your on login page like this

Login to ILIAS
User Name
Password

//you can also use in another way

http://www.blogger.com/go1.gif" name="butSubmit">

/////////////////////This concept is used on gradtrain.com////////////////

File upload like gmail

Step1: Create A file name index.php
File Uploading Like Gmail. You can upload multiple files without submitting the whole page. You can upload file like ajax. This is using iframe for file upload

To:

Subject:

Attach File:

Step2:create a file upload.php

Check Date Between Two Dates in PHP

function dateBetween( $checkDate )
{
$firstDate1 = strtotime( "15-Jan-2008" );
$firstDate2 = strtotime( "15-Mar-2008" );
$secondDate1 = strtotime( "16-Mar-2008" );
$secondDate2 = strtotime( "15-Jun-2008" );

$checkDate = strtotime( $checkDate );

if( $checkDate > $firstDate1 && $checkDate < $firstDate2 )
{
return "2000";
}
elseif( $checkDate > $secondDate1 && $checkDate < $secondDate2 )
{
return "4000";
}

return "0";
}

echo dateBetween( "25-Sep-2008" );

?>