In order to solve the above problem, here’s a little trick:

<?php

// post param
$param = array('data' => 'abc');

$c = curl_init();
curl_setopt($c, CURLOPT_URL, "form.php");
curl_setopt($c, CURLOPT_POST, true);
curl_setopt($c, CURLOPT_POSTFIELDS, $param);
curl_setopt($c, CURLOPT_HEADER, 1);
curl_setopt($c, CURLOPT_FOLLOWLOCATION, true);
curl_exec($c);

// here's the trick
$redirectLocation = curl_getinfo($c, CURLINFO_EFFECTIVE_URL);
header("Location: $redirectLocation");

?>

Method 1 (Windows 7 Professional / Ultimate Edition)

1. Under “Control Panel”, find “System and Security”
2. Open “Administrative Tools”
3. Double Click “Local Security Policy”
4. Expand “Local Policies”
5. Click “Security Options” and Scroll to find “Network Security: LAN Manager Authentication Level”
6. Choose “Send LM & NTLM, use NTLMv2 session security is negotiated” for the drop down.
7. Done. you can now map network drive as normal (like in XP)

Method 2 (Windows 7 Home Edition)

1. Use notepad and save the snippet below as win7fix.reg

   Windows Registry Editor Version 5.00
   
   [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa]
   "lmcompatibilitylevel"=dword:00000002

2. Double click the win7fix.reg you just create to run it
3. Press “Yes” to add that into registry
4. Done. you can now map network drive as normal (like in XP)

ref. http://www.ntnu.no/itinfo/read_article.php?aid=711

White List

<?php

// White List
// userid from 1 to 10
if ($userid == 1 || 3 || 5) {
// then allow access to manager admin module
} else {
// normal member module
}

?>

Black List

<?php

// Black List
// userid from 1 to 10
if ($userid != 1 || 3 || 5) {
// normal member module
} else {
// then allow access to manager admin module
}

?>

Both White List and Black List has its own advantage. White List offers better control and security (take the above for instance, when you forgotten to add a particular userid to the black list, anonymous access to admin module would happen; while missing an userid in whitelist would simply cause that user not able to access admin module which is less damaging); while Black List can help reduce the length of the code to get the same logic done.

In my opinion, lots of developers would pick Black List as the preferred approach, since it’s shorter and faster to write.

There are two guideline which i would suggest to follow when making the decision:

1. Security Concern: Try to use White List whenever possible since it provide better security (this is an important factor especially when your application is already serving more than million of people).
2. Efficiency: Only use Black List when you have a huge amount of checking to do, which make White List not reasonable. (e.g. White-Listing over thousands/millions of tags created by users)

So far i have been following the above rules as far as possible, and it reduces logic bugs and gives better code readability.

<?php

$hostname = 'localhost';
$username = 'username';
$password = 'password';

try {
$dbh = new PDO("mysql:host=$hostname;dbname=mysql", $username, $password);

// Setting the notification to throw exception when error encountered
$dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

$dbh->beginTransaction();
$count = $dbh->exec("INSERT INTO user(userID, name) VALUES ('1', 'Steve')");
$dbh->commit();

$dbh = null;
}
catch(PDOException $e)
{
$dbh->rollback();
echo $e->getMessage();
}

?>

# First, let's create a directory for the jail account
mkdir /jail
chown root:root /jail

# Then we create a new user account specially for jail account
# *replace <group name>, <username>, <password> with your own value
groupadd <group name>
useradd -d /home/jail -g <group name> -p <password> <username>

# For example, if we only want to allow the jail account to have ssh and basic shell access
jk_init -v -j /jail basicshell ssh

# Then we shall jail the user account we previously created to the jail directory
jk_jailuser -m -j /jail <username>

Now the jail account and file system is ready, however if you want more control, we can do the following.

# OPTIONAL: Edit /jail/etc/passwd file and /jail/etc/group file to further limit the access
# The following further limit the user logged in jail account to have only access to bash
# Assume the jail user account & group = jail_user, and we edit the passwd file
jail_user:x:1016:1016:/home/jail:/bin/bash

# edit group file
jail_user:x:1016

The above might work, but i would suggest you to try the following method before going thru the turn-off plugin cycle. For example, if you have modified “functions.php”, and the above header information header appeared right after, you can easily resolve this by removing all the extra whitespace before the “<?php” and “?>” tag. Viewing thru editor, you might not notice any whitespace, but try this trick:

1. Remove the “>” from the “?>” tag at the end of file
2. Then keep holding Delete key (not backspace) for a few seconds. (*note that the cursor should be locate after the “?”)
3. You will notice some whitespace being deleted. Amazing isn’t it?
4. Add the “>” after the “?” to properly close the php tag
5. Save the file, and try accessing it, the header information error should have been resolved

// The directory which search would be conducted
File directoryForSearch = new File("C:\folder");

// This may not be the best way to accomplish the task, please bear me with it
File[] allFile = directoryForSearch.listFiles();
File[] resultFile = new File[allFile.length];
int resultCount = 0;

// loop thru the list of files to find the required files
for(int i=0; i<allFile.length; i++)
{
    if(allFile[i].getName().matches(".*\\.java")
    {
        resultFile[resultCount] = allFile[i];
        resultCount++;
    }
}

In fact, there is a more convenient way to get the above task done. It’s not hard at all, however people might have often omitted it. We shall make use of “FilenameFilter” to filter the files instead of looping.

// The directory which search would be conducted
File directoryForSearch = new File("C:\folder");

// Using FilenameFilter to do the filtering job
File[] resultFile = directoryForSearch.listFiles(new FilenameFilter()
{
    public boolean accept(File dir, String name)
    {
        // Here we try to match file with extension ".java"
        // Returning YES/TRUE indicate the acceptance of the file else ignore
        return name.matches(".*\\.java");
    }
}

This code reduction and performance improvement would definitely help when one is trying to implement a complex file search.

1. Using current Screensaver as the Wallpaper. This can be gorgeous, however, depending on which screensaver you pick, it might take up some CPU & memory. (*To stop it, simple press “Ctrl+C”)

   /System/Library/Frameworks/ScreenSaver.framework/Resources/ScreenSaverEngine.app/Contents/MacOS/ScreenSaverEngine -background
   

2. Enable hidden files/folders be shown on Finder. This is very useful in particular when you want to locate some important hidden files like “.ssh” or “.bash_rc”.

   // Change TRUE to FALSE to disable the effect
   defaults write com.apple.finder AppleShowAllFiles YES
   
   // Restart the finder to take effect
   killall Finder

3. Enable the highlight effect on Stack (Highlight the icon when mouse hover)

   // Change yes to no to cancel the effect
   defaults write com.apple.dock mouse-over-hilte-stack -boolean yes
   
   // Restart the Dock to take effect
   killall Dock

4. Allow dashboard widgets to be dragged and run on Desktop

   // Change YES to NO to cancel the effect
   defaults write com.apple.dashboard devmode YES

5. Enable debug menu for Safari. I use it alot when doing web development (tho i prefer firefox with firebug)

   // Change 1 to 0 to cancel the effect
   defaults write com.apple.safari IncludeDebugMenu 1

6. Disable the annoying crash report dialog.

   Change none to prompt to cancel the effect
   defaults write com.apple.CrashReporter DialogType none

There are more useful commands around, and above are just some useful ones which i have been using.

(*Do learn about what you are doing before executing a command.)

1. Creating a file of a specific size instantly, e.g. 1GB

# fsutil file createnew <filename> <filesize>
fsutil file createnew testfile 1073741824

2. Disabling short file names. Default windows will create 8.3 character length file name for every file/folder you create. This is to provide compatibility to some program which based on DOS. Often, this is not needed, and can be set to true, which in turns speed up windows.

# fsutil behavior set disable8dot3 {1|0}
fsutil behavior set disable8dot3 1

3. Disabling timestamp for last access to a file. You might disable to function where windows keep track of the last access timestamp for files.

# fsutil behavior set disablelastaccess {1|0}
fsutil behavior set disablelastaccess 1

4. Disabling Vista’s Encryption File System. If security is not a concern, and your system is in need of extra resources, you might choose to disable to EFS that vista provides.

# fsutil behavior set disableencryption {1|0}
fsutil behavior set disableencryption 1

* 2 & 3 & 4, in fact behavior got another sub-command in addition to “set” — “query”. You may use it to query the current setting for a specific property.

# The following command can be used to query the current setting of disable8dot3
fsutil behavior query disable8dot3

5. List all drives in a computer. This could easily retrieve and echo all the drives connected on this computer including remote drives.

fsutil fsinfo drives

6. Check a drive’s type e.g. CD-ROM. Sometimes, in script, you might use it to determine which drive is a CD-ROM.

# fsutil fsinfo drivetype <volume name>
fsutil fsinfo drivetype C:

7. List information for the specified drive. This shall show a list of supported properties such as “Case-sensitive File Name”, “Sparse Files” etc.

# fsutil fsinfo volumeinfo <full volume path>
fsutil fsinfo volumeinfo C:\

8. Query the free space of a drive. To identify how much free space is left exactly for a specific drive.

# fsutil volume diskfree <volume name>
fsutil volume diskfree C:

9. Dismount a volume. *Use it carefully*

# fsutil volume dismount <full volume path>
fsutil volume dismount C:\

Above only listed some useful command for your reference, and it’s not complete. For further information, you can refer to here.

// HTML Snippet
<div id="test-area">
  <ul>
    <li>row 1</li>
    <li class="even-row">row 2</li>
    <li>row 3</li>
    <li class="even-row">row 4</li>
    <li>row 5</li>
    <li class="even-row">row 6</li>
    <li>row 7</li>
    <li class="even-row">row 8</li>
    <li>row 9</li>
    <li class="even-row">row 10</li>
  </ul>
</div>

// CSS Snippet
ul {
  list-style: none;
}

// color the even rows
.even-row {
  background-color: #ccc;
}

The above method is okay when you are working with simple rule, but how about if i only want 1, 7, 13, 19…(6n+1)th rows to be highlighted. Then you probably need to write some javascript and do calculation to do it. However, with HTML 5, we got a better yet easier way to accomplish this. We will be using the new property “nth-child”. Let me illustrate by rewriting the example above:

// HTML Snippet
<div id="test-area">
  <ul>
    <li>row 1</li>
    <li>row 2</li>
    <li>row 3</li>
    <li>row 4</li>
    <li>row 5</li>
    <li>row 6</li>
    <li>row 7</li>
    <li>row 8</li>
    <li>row 9</li>
    <li>row 10</li>
  </ul>
</div>

// CSS Snippet
ul {
  list-style: none;
}

// Note that n is a special symbol here
li:nth-child(2n) {
  background-color: #ccc;
}

See the power of nth-child? We now no longer need to label alternate rows, instead, we use the nth-child property. We simply tell nth-child with the calculation (e.g. any integers like “1″, “3″, “5″ or using the special “n” variable for help, like: “2n” representing alternative rows, “5n” representing every fifth rows or even the word “odd” and “even”… you might try to edit the code above to use “even” instead of “2n” to accomplish the same effect.), and it will apply the CSS for you. To learn more, you might try the demo page i made.