Word Press have missed schedule issue from 2.7 version onwards. Word Press post scheduling was working fine upto   2.6.5 version as many of users reported on web.  You can schedule wordpress post to publish on a specified time. but when time comes post can not publish and shows missed schedule in the admin area.  According to WP guys, this is not the issue that Word Press guys can fix. This issue comes when your web server can not properly execute wp-cron process.  New wordpress wp-cron method run wp-cron in separate process that rely on web server configuration. Everytime Word Press loads it looks for wp-cron whether it should be run or not based on the time it was last run.

Here are some reason that prevent Word Press to run wp-cron correctly.

• Server doesn’t have DNS, and so it can’t figure out who “example.com” is, even though it is *itself*.
• Server administrators, in a misguided attempt at security, have blocked “loopback” requests, so it can’t actually make a call back to itself.
• Server is running something called “mod_security” or similar, which actively blocks the call due to brain-dead configuration.

There is simple to complex workaround to solve this issue. This problem automatically fix when your server is configured to run wp-cron properly but it require server root access and extensive server administration knowledge. So server configuration method is simply not for everyone to use. There is simple workaround to fix this issue that force wordpress to run wp-cron using alternative method that does not rely on web server configuration. To fix the issue add below line in the wp-config.php file. This line can be add anywhere in the wp-config.php file.

define(‘ALTERNATE_WP_CRON’, true);

This should restore wordpress schedule functionality.

1&1 Linux hosting still support PHP4 as default php processor for .php files. To run PHP5 you need to rename .php file as .php5 file. But it is hard to rename all application files at once. You can use PHP5 in your account by following simple steps below:

• Create a .htaccess file or edit .htaccess file if you application already using
• Add below lines on the top on file content
  AddType x-mapp-php5 .php
  AddHandler x-mapp-php5 .php
• Upload .htaccess file to root folder of your hosting account.

Done!

I recently encounter this issue on my client wordpress mu blog.  When i open main blog page after installation an infinite loop occur and stop at dead end in Firefox. I searched a lot about this on wordpress forum. Surprising, issue is stated everywhere in the forums and blog but no solution was suggested.

Why Redirect Loop?

The issue arise because database was not created during wordpress installation but word press config file was written. WordPress uses wp-config.php file to store database configuration.  If WordPress find this file in the  installation directory then no further installation procedure begin. WordPress now look at DB to load default blog but there is no table in the database. Again, control goes to install procedure but WordPress understand blog already installed because WordPress config file is present in root folder. Once again WordPress try to load blog from database and redirect loop occur.  I hope WordPress guys will fix this in future releases.

The Fix

The fix is very simple. Simply, rename or delete WordPress config file and re-install wordpress mu.  Make sure database user you are using during installation have sufficient permission to create and manipulate database tables.

Vendor() function basically used to load third party library in CakePHP. This function have been deprecated in the recent CakePHP releases.  The vendor function in earlier CakePHP releases has been replace with new App::import method that is more user friendly and allow you to include third party library in several ways.

To fix the issue simply replace vendor function with new method.  New import method return boolean true or false depend on the library loaded or not.  This is useful in some context.  With new import method you have option to verify third party library loading and act accordingly so your application never fail.

Old Method

vendor('facebook/facebook');

New Method

App::import('Vendor', 'facebook/facebook');

Confirmation before deletion of record is very useful to preserve data from accidental record deletion. With confirmation process will be in two steps. Here is the javascript way to ask user whether they want to delete record or not.

<a onclick=”return confirm(‘Are you sure you want to delete?’)” href=”page.page?act=delete&id=1″>Delete</a>

You can see above example. The method is very easy.? if you click OK.. then function will return true and browser navigate href URL otherwise false value will be return and your click will not work.

You can achieve same functionality by wraping above method in a function.

Suhosin is a security product released by Hardened-PHP to secure your PHP application. Hardened-PHP is founded by Stefan Esser, Christopher Kunz and Peter Prochaska from Germany with the primary goal to help php web developers, development organization to secure PHP web application. They also provide searvice to find out security holes in your php applicatn by examining application code.

Suhosin comes with two component that can work separately or in collboration. The first component called Suhosin patch that help you to secure your application from some low-lever vulnerabilities like bufferoverflows. The second component comes as PHP extension that reduce risk of other security flaws.

Click Here to Learn More

Google Search Box History is a good tool for web surfer who want to track of their search history. It is very useful sometime when we forget what we have browsed. But at the same time it curious for the people who love their privacy. Because it make available to open what you have accessed though your web browser. Google do not store your browser activity, All such form data saved by browser itself. Note that Google Web Search History is different from Search Box History. If you login in to Google account, Google track your search activity to deliver better search result according to your habits.

Let see how we can stop browser habit to stop your search activity.

Instant Method:

Click on the search box drop down. Click on the “Clear Search History” to instantly clear search history. This method is same for IE and Firefox. Also work on google tool bar search box as well as Firefox search box. You can do this easily before leaving your computer.

ls : List files/directories in a current directory, equivalent to dir command in dos/windows.
ls -al : Shows all files and directories with the details attributes for each file.

cd : Change directory
Examples:
cd ~ : Change your directory to your home directory.
cd – : Change to the last directory you were in.

tail : Reads and display the end of the file
Examples:
tail /var/www/me.txt : Display last 20 lines (by default) lines of the given file.
tail -f /var/www/me.txt : Watch the file continuously, while it’s being updated.
tail -400 /var/www/me.txt : Print last 400 lines of the file to the screen.

more : Open file one screen at a time.
Examples:
more /etc/log.txt : Opens the file one screen at a time rather than all at once. Press Space to go to next page.

pico : easy to use file editor
Examples:
pico /home/mysite/public_html/you.html : edit the you.html file from the public_html directory.

vi : popular editor in linux, have lots of features but harder to use
Examples:
vi /home/mysite/public_html/you.html : edit the you.html from the public_html directory.

grep : looks for certain patterns in files
Examples:
grep root /etc/passwd : shows all matches of root in /etc/passwd
grep -v root /etc/passwd : shows all lines that do not match root

touch : create an empty file
Examples:
touch /home/mysite//public_html/new.html : create an empty file called new.html in the directory /home/mysite//public_html/

ln : create’s “links” between files and directories
Examples:
ln -s /usr/local/apache/conf/httpd.conf /etc/httpd.conf : Now you can edit /etc/httpd.conf rather than the original. changes will affect the orginal, however you can delete the link and it will not delete the original.

rm : delete a file
Examples:
rm filename.txt : Deletes filename.txt, It will confirm you before deleting file.
rm -f filename.txt : Deletes filename.txt without confirmation.
rm -rf tmp/ : Recursively deletes the directory tmp, and all files in it, including subdirectories.

last : shows who logged in with the time
Examples:
last -20 : shows only the last 20 logins
last -20 -a : shows last 20 logins, with the hostname in the last field

netstat : shows all current network connections.
netstat -an : shows all connections to the server, the source and destination ips and ports.
netstat -rn : shows routing table for all ips bound to the server.

top : shows useful live system info
processes in a table format, memory information, uptime and other useful info. This is excellent for managing your system processes, resources and ensure everything is working fine and your server isn’t bogged down. top then type Shift + M to sort by memory usage or Shift + P to sort by CPU usage

ps: ps is short form of process status, equivalent to the top command. It’s used to show currently running processes with their PID.

A process ID is a unique number that identifies a process, with that you can kill or terminate a running program on your server (see kill command).
Examples:
ps U username : shows processes for a certain user
ps aux : shows all system processes
ps aux –forest : shows all system processes like the above but organizes in a hierarchy that’s very useful!

file : attempts to guess what type of file a file is by looking at it’s content.
Examples:
file * : prints out a list of all files/directories in a directory

du : shows disk usage.
Examples:
du -sh : shows a summary of total disk space used in the current directory, including subdirectories.
du -sh * : same as above, but for each file and directory. helpful when finding large files taking up space.

wc : word count
Examples:
wc -l filename.txt : tells how many lines are in filename.txt

cp : copy a file
Examples:
cp filename filename.backup : copies filename to filename.backup
cp -a /home/mysite/old/* /home/mysite/new/ : copies all files, retaining permissions form one directory to another.

kill: terminate a system process
Examples:
Syntax: kill -9 PID Examples: kill -9 431
Syntax: kill PID Examples: kill 10550

Just launched Unix Timestamp Conversion Tool. All of users of my website are welcome to test and use this tool. Please feel free to share your comments, bugs etc..

PHP Source Code Highlighter (syntaxhighlighter) Wordpress plugin allow you to post php code inside your wordpress post with syntax highlight and line number. The plugin preserve code formatting and do not encode character until you do manually.

Supports the following languages:

* C++ — `cpp`, `c`, `c++`
* C# — `c#`, `c-sharp`, `csharp`
* CSS — `css`
* Delphi — `delphi`, `pascal`
* Java — `java`
* JavaScript — `js`, `jscript`, `javascript`
* PHP — `php`
* Python — `py`, `python`
* Ruby — `rb`, `ruby`, `rails`, `ror`
* SQL — `sql`
* VB — `vb`, `vb.net`
* XML/HTML — `xml`, `html`, `xhtml`, `xslt`

How to Use Wordpress Syntax/Source Code Highlight Plugin

This plugin do not add any button in the editor to wrap code automatically. Hope this feature will be added soon. You need to wrap you code within </strong>add your php code here <strong>[/source code] tag.

Download: http://downloads.wordpress.org/plugin/syntaxhighlighter.zip
Live Demo/Screenshot: http://www.bala-krishna.com/how-to-clean-special-characters-from-php-string