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Posts in category Tips and Tricks

Handle Rename uploaded files to avoid Duplicate names

Nov22
2011 Written by owneroftechcity

I am making File Uploader and uploaded same file twice it replaced original. how to avoid this?? how to prevent Duplicate File conflict in PHP? How will you manage files with same name , if you have FILE UPLOAD system on your server?? how to handle Duplicate file upload??

How can one avoid duplicate naming issues? How to overcome problem of File with Same name Already exists on server? How can you Rename Uploaded files to prevent Duplicate names?

Here are few ways to do so.

  • Attach (1),(2) etc. in front of  uploaded file.
    This can be one of the solutions.. But if your server has 100′s of files with same name?? (1)(2)..(100) and original one , then how to do this?? This will cause to run a big loop for you.
    Example:
    You are uploading a file say 1.jpg on your server. There is a file with name 1.jpg on your server already.. then in your upload Script in PHP what you will do? You will check if file with current name exists on server.. If so then you will attach 1(1).jpg.
    But what if you have 1.jpg,1(1).jpg, …. ,1(100).jpg present on server? Is this feasible to run a big loop???? No!! So what to do?? There is a next way for you!
  • Attach Time Stamp in front of Uploaded file name!
    Oh!! What does that mean?? It’s simple .. You will check if “1.jpg”  is already there on server or not. If it’s there then Simply Generate a Time Stamp, i.e. Get current Time as , YYYY-MM-DD-HH-MM-SS .(without – or with – as your wish) And then Just attach it against file name i.e. 1(Timestamp).jpg
    So it simply means .. You won’t be ever having naming conflicts in life :P

You can apply this Technique in all type of Server side scripting i.e. PHP , JAVA , ASP , ASP.NET and so on.

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Posted in Advanced PHP tutorials - Tagged , , , , , , , , ,

Java .class File Decompiler

Oct03
2011 Written by owneroftechcity

How to get back SOURCE CODE from .java class file? Is it possible?? From what we learn .. it’s not possible to get back source code. So what if you have .class file , and you have lost source code of java file?? can you get it back?? Yes you can!!!!!

Here is a good news for you!! IF you have lost your SOURCE code of .class file, you can get back source code of java, what to do? how to do? you must have been excited!

Well you have to follow some easy steps, get a freeware tool. It’s very lightweight, and supports many platforms. You can get that tool called as JD Java Decompiler HERE

It is capable of decompiling source code upto a large extent. For me it gave me 100% result.

Java Decompiler

Java Decompiler

Enjoy, Hope you find it useful :)

Tweak Your Windows System with TweakNow PowerPack

Sep24
2011 Written by owneroftechcity

TweakNow PowerPack is a is a powerful tweaker for Windows operating system that lets you fine tune many aspects of your Windows operating system. It contains a lot of utilities which lets you clean your Computer and tweak different settings easily. It contains a lot of tweaks ranging from beginner to intermediate level. Apart from that, it also offers some enhanced functionality like Virtual desktop, RAM booster etc.

The installation is straightforward and the interface of the program is simple and you can do most of the stuff by just a button click. On running the program, you will notice that it has different tabs for different optimization ranging from Quick optimizer, troubleshooting, Windows Cleaner, system information etc. Quick Optimizer lets you quickly do a lot of cleaning and optimizing like cleaning web browser files and history, remove temp files, compact Chrome & Mozilla database, optimize windows and network settings. Just check the things that you want and hit the ‘Optimize’ button. Troubleshooting lets you rebuild icon cache or reset the Internet/Network settings to there default setting.

The ‘Disk Cleaner’ utility comes with a lot of options which includes a Disk Cleaner, Defragmenter, Secure Delete for securely deleting files, a Disk Usage analyzer, Startup manager, Registry Cleaner, Track Cleaner etc. The ‘Windows Secret’ tweaker lets you modify a lot of different settings related to Control Panel, Desktop, Explorer, Logon, OEM Information etc. It also includes a System information which gives you a detailed information of your Computer system.

Apart of tweaking, it also includes some functional utilities like ‘Virtual Desktop’ which lets you run upto 4 virtual desktop on your machine. It also includes a RAM optimizer for freeing up physical memory and a process manager for managing running processes. It also comes with a shutdown manager which lets you shutdown, restart, log off your machine at the specified time.

The program is very useful and lets you do a lot of stuff with a single click. The program is a freeware and runs on Windows XP, Vista and 7.

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