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Monthly Archives: March 2010

Session lost when switching from HTTP to HTTPS in PHP

Sometime we face the problem when we navigate from HTTP URL to HTTPS URL our session lost.

You can manage session between HTTP to HTTPS or HTTPS to HTTP:

1. Transmit session ID between page using GET

2. POST session ID by POST

3. Use files to save sessions

4. Use Cookies for sessions

5. Use database to save session

Below example can be used to transmit using GET….

File : http.php
……………

<?php

session_start();

$sessionID = session_id();

$_SESSION[‘svnlabs’] = ‘Demo session between HTTP HTTPS’;

echo ‘<a href=”https://www.svnlabs.com/https.php?session=&#8217;.$sessionID.'”>Demo session from HTTP to HTTPS</a>’;

?>

File: https.php
……………

<?php

$sessionID = $_GET[‘session’];

session_id($sessionID);

session_start();

if (!empty($_SESSION[‘svnlabs’])) {
echo $_SESSION[‘svnlabs’];
} else {
echo ‘Demo session failed’;
}

?>
IE7 : This page contains both secure and nonsecure items

You have to use relative path for all static resource on page like css, js, images, flash etc. to avoid IE message secure and nonsecure items…

IE message

IE message

Well! stay with us….. 🙂

 

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VideoAPI

a2zVideoAPI

a2zVideoAPI

 
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Posted by on March 24, 2010 in javascript, php, Tips, Tricks, Web Services

 

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Facebook Application

Seven Version on Facebook

Seven Version on Facebook

FaceBook Application
FaceBook Profile

 
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Posted by on March 20, 2010 in php, Tips, Tricks

 

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FFmpeg

FFmpeg

FFmpeg

# ffmpeg is a command line tool to convert one video file format to another. It can also grab and encode in real time from a TV card.
# ffserver is an HTTP and RTSP multimedia streaming server for live broadcasts. It can also time shift live broadcast.
# ffplay is a simple media player based on SDL and on the FFmpeg libraries.
# ffprobe is a command line tool to show media information.

# Convert video files into another format.
# flv -> avi
# flv -> mp4
# flv -> wmv
# flv -> swf
# avi -> mp4
# avi -> wmv
# avi -> flv
# avi -> swf
# mp4 -> avi
# mp4 -> wmv
# mp4 -> flv
# mp4 -> swf
# wmv -> mp4
# wmv -> avi
# wmv -> flv
# wmv -> swf
# divx -> mp4
# divx -> avi
# divx -> flv
# divx -> wmv
# divx -> swf
#
# Audio extraction
# flv -> mp3
# avi -> mp3
# mp4 -> mp3
# wmv -> mp3
# divx -> mp3
# swf -> mp3

if ($target == ‘mp3’)
{
$ffmpeg_cmd = exec($ffmpeg.” -y -i “.$source.” -acodec “.$acodec.” -vn “.$target);
} else {
$ffmpeg_cmd = exec($ffmpeg.” -y -i “.$source.” -acodec “.$acodec.” “. $ar .” -ab 128kb “.$vcodec.” “.$r.” -b 1200kb -mbd 2 -cmp 2 -subcmp 2 “.$size.” “.$aspect.” “.$target);
}

 

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PHP – File Upload Stream

File Upload Stream

File Upload Stream

PHP supports upload file stream… we can stream data to server using PHP stream_open() & stream_write() functions.

There is alternate method in PEAR to transfer files to server1 to server2. PEAR have HTTP package for uploading files.

HTTP_Request supports GET/POST/HEAD/TRACE/PUT/DELETE, Basic authentication, Proxy, Proxy Authentication, SSL, file uploads etc.

<?php
require_once "HTTP/Request.php";
$req =& new HTTP_Request("http://domain.com/upload");
$req->setBasicAuth("login", "pass");
$req->setMethod(HTTP_REQUEST_METHOD_POST);

$result = $req->addFile("data", "/home/svnlabs.mp4");
if (PEAR::isError($result)) {
echo "Error occurred during file upload!";
} else {
$response = $req->sendRequest();
if (PEAR::isError($response)) {echo "Error occurred during file upload!";
} else {
echo "File successfully uploaded!";
}
}
?>
 
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Posted by on March 17, 2010 in CakePHP, Fedora, Linux, PEAR, php, Tips, Tricks, Web Application

 

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Linux Network Configuration

# system-config-network
# redhat-config-network
# vi /etc/resolve.conf
# vi /etc/hosts
# /sbin/ifconfig eth0 192.168.10.120 netmask 255.255.255.0 broadcast 192.168.10.255

# /etc/init.d/network restart

ifup – bring a network interface up

ifdown – take a network interface down

system-config-network-screen

system-config-network_Devices-Edit-General

system-config-network_SetHostnameDNS

system-control-network

 
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Posted by on March 15, 2010 in CentOS, Fedora, Linux, Tips, Tricks

 

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7 Simple Steps to create Twitter Application

First you have to download oAuth from github

“An open protocol to allow secure API authorization in a simple and standard method from desktop and web applications.”

7 Simple Steps to create Twitter Application using Twitter’s OAuth….

1. Build TwitterOAuth object

Login to twitter and register a new application here https://twitter.com/oauth_clients … after registering application save consumer key and consumer secret.

$to = new TwitterOAuth($consumer_key, $consumer_secret);

Twitter OAuth

2. Request tokens from twitter

$tok = $to->getRequestToken();

3. Build authorize URL

$request_link = $to->getAuthorizeURL($token);

4. Send user to Twitter’s authorize URL

Twitter_1268502547513

5. Get access tokens from twitter

$tok = $to->getAccessToken();

6. Rebuild TwitterOAuth object

$to = new TwitterOAuth($consumer_key, $consumer_secret, $user_access_key, $user_access_secret);

7. Query Twitter API with new access tokens

$content = $to->OAuthRequest(‘https://twitter.com/account/verify_credentials.xml&#8217;, array(), ‘GET’);

$content = $to->OAuthRequest(‘https://twitter.com/statuses/update.xml&#8217;, array(‘status’ => ‘Test OAuth update. #testoauth’), ‘POST’);Twitter - Redirecting you back to the application_1268502564768

Source:
https://docs.google.com/View?docID=dcf2dzzs_2339fzbfsf4
http://wiki.github.com/abraham/twitteroauth/links

 

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