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  • How to set custom form input field for "Price"?

    - by RodeoRamsey
    I have a basic html form that adds some data to the page using PHP. I want to make this form field a "Price" field. My html is: <input class="bids" name="comment" id="comment" tabindex="4" /> How can I fix this field so that users can't enter random letters, dollar signs, dashes, or other weird formats. I want the output to be whole dollars. Sorry I'm a complete programming moron. :)

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  • Skewed: a rotating camera in a simple CPU-based voxel raycaster/raytracer

    - by voxelizr
    TL;DR -- in my first simple software voxel raycaster, I cannot get camera rotations to work, seemingly correct matrices notwithstanding. The result is skewed: like a flat rendering, correctly rotated, however distorted and without depth. (While axis-aligned ie. unrotated, depth and parallax are as expected.) I'm trying to write a simple voxel raycaster as a learning exercise. This is purely CPU based for now until I figure out how things work exactly -- fow now, OpenGL is just (ab)used to blit the generated bitmap to the screen as often as possible. Now I have gotten to the point where a perspective-projection camera can move through the world and I can render (mostly, minus some artifacts that need investigation) perspective-correct 3-dimensional views of the "world", which is basically empty but contains a voxel cube of the Stanford Bunny. So I have a camera that I can move up and down, strafe left and right and "walk forward/backward" -- all axis-aligned so far, no camera rotations. Herein lies my problem. Screenshot #1: correct depth when the camera is still strictly axis-aligned, ie. un-rotated. Now I have for a few days been trying to get rotation to work. The basic logic and theory behind matrices and 3D rotations, in theory, is very clear to me. Yet I have only ever achieved a "2.5 rendering" when the camera rotates... fish-eyey, bit like in Google Streetview: even though I have a volumetric world representation, it seems --no matter what I try-- like I would first create a rendering from the "front view", then rotate that flat rendering according to camera rotation. Needless to say, I'm by now aware that rotating rays is not particularly necessary and error-prone. Still, in my most recent setup, with the most simplified raycast ray-position-and-direction algorithm possible, my rotation still produces the same fish-eyey flat-render-rotated style looks: Screenshot #2: camera "rotated to the right by 39 degrees" -- note how the blue-shaded left-hand side of the cube from screen #2 is not visible in this rotation, yet by now "it really should"! Now of course I'm aware of this: in a simple axis-aligned-no-rotation-setup like I had in the beginning, the ray simply traverses in small steps the positive z-direction, diverging to the left or right and top or bottom only depending on pixel position and projection matrix. As I "rotate the camera to the right or left" -- ie I rotate it around the Y-axis -- those very steps should be simply transformed by the proper rotation matrix, right? So for forward-traversal the Z-step gets a bit smaller the more the cam rotates, offset by an "increase" in the X-step. Yet for the pixel-position-based horizontal+vertical-divergence, increasing fractions of the x-step need to be "added" to the z-step. Somehow, none of my many matrices that I experimented with, nor my experiments with matrix-less hardcoded verbose sin/cos calculations really get this part right. Here's my basic per-ray pre-traversal algorithm -- syntax in Go, but take it as pseudocode: fx and fy: pixel positions x and y rayPos: vec3 for the ray starting position in world-space (calculated as below) rayDir: vec3 for the xyz-steps to be added to rayPos in each step during ray traversal rayStep: a temporary vec3 camPos: vec3 for the camera position in world space camRad: vec3 for camera rotation in radians pmat: typical perspective projection matrix The algorithm / pseudocode: // 1: rayPos is for now "this pixel, as a vector on the view plane in 3d, at The Origin" rayPos.X, rayPos.Y, rayPos.Z = ((fx / width) - 0.5), ((fy / height) - 0.5), 0 // 2: rotate around Y axis depending on cam rotation. No prob since view plane still at Origin 0,0,0 rayPos.MultMat(num.NewDmat4RotationY(camRad.Y)) // 3: a temp vec3. planeDist is -0.15 or some such -- fov-based dist of view plane from eye and also the non-normalized, "in axis-aligned world" traversal step size "forward into the screen" rayStep.X, rayStep.Y, rayStep.Z = 0, 0, planeDist // 4: rotate this too -- 0,zstep should become some meaningful xzstep,xzstep rayStep.MultMat(num.NewDmat4RotationY(CamRad.Y)) // set up direction vector from still-origin-based-ray-position-off-rotated-view-plane plus rotated-zstep-vector rayDir.X, rayDir.Y, rayDir.Z = -rayPos.X - me.rayStep.X, -rayPos.Y, rayPos.Z + rayStep.Z // perspective projection rayDir.Normalize() rayDir.MultMat(pmat) // before traversal, the ray starting position has to be transformed from origin-relative to campos-relative rayPos.Add(camPos) I'm skipping the traversal and sampling parts -- as per screens #1 through #3, those are "basically mostly correct" (though not pretty) -- when axis-aligned / unrotated.

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  • Upload Image with Django Model Form

    - by jmitchel3
    I'm having difficulty uploading the following model with model form. I can upload fine in the admin but that's not all that useful for a project that limits admin access. #Models.py class Profile(models.Model): name = models.CharField(max_length=128) user = models.ForeignKey(User) profile_pic = models.ImageField(upload_to='img/profile/%Y/%m/') #views.py def create_profile(request): try: profile = Profile.objects.get(user=request.user) except: pass form = CreateProfileForm(request.POST or None, instance=profile) if form.is_valid(): new = form.save(commit=False) new.user = request.user new.save() return render_to_response('profile.html', locals(), context_instance=RequestContext(request)) #Profile.html <form enctype="multipart/form-data" method="post">{% csrf_token %} <tr><td>{{ form.as_p }}</td></tr> <tr><td><button type="submit" class="btn">Submit</button></td></tr> </form> Note: All the other data in the form saves perfectly well, the photo does not upload at all. Thank you for your help!

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  • Remembering Form information

    - by Pete Herbert Penito
    Hi everyone! I'm sorry if this has been asked before but I feel my situation is a little different... I have a huge form (like 50 questions involving checkboxes, drop downs, text boxes and textareas) When a user submits a form and the validation page throws an error, is there an easy way to keep the info they entered? My intitial form is on form.php and then the form action is form_posted.php, before anything is run on form_posted.php I have my validation code which sends the user back to form.php with an error number (eg. form.php?error=3) if there was a problem with any in particular. This is done with header("form.php?error=3") so on form.php do the posted variables exist? even tho the page wasn't specifically sent with any posted variables. Also if this is the case, is it completely secure to be making the value of a textbox what it was before? like <input type="text" value="php echo $_POSTED["username"] ?>">

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  • jQuery: Post form to a modal window for previewing the entered data

    - by superUntitled
    I am looking for a way to use jQuery to allow a user to look at a modal window "preview" of a form before they submit the form to be saved. I have this working with javascript, the form is posted to a file named preview.php that iterates through the posted information. The script currently opens a new window. I would like instead to use jQuery to post the form to a modal window for previewing. Does anyone have any thoughts on how to do this? This is what I am currently using: <script language="JavaScript"> function preview(form) { form.target='_blank'; form.action='http://example.com/preview.php'; form.submit(); } </script> <input type="button" value="preview" onclick='preview(this.form)'>

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  • Etch a Circuit Board using a Simple Homemade Mixture

    - by ETC
    If you’ve been dabbling in DIY electronics projects but you’re not so excited about keeping strong acids around to etch your circuit boards, this simple DIY recipe uses common household chemicals in lieu of strong acid. Electronics hobbyist Stephen Hobley wanted to see if he could create an etching solution that wasn’t as dangerous and noxious smelling at traditional muriatic acid solutions. By combining regular white vinegar, hydrogen peroxide, and table salt, he created a homemade etching solution from ingredients safe enough to store in your pantry. The only downside to his recipe is that, compared to traditional etching solutions, the process takes a little bit longer so you’ll have to leave your board in the solution longer. Not a bad trade off for the ability to skip using any oops-I-burned-my-skin-off acids. Check out the process in the video below: Hit up the link below for more information and and interesting explanation of the chemical process (he talks about not quite understanding it in the video but two chemists write in and give him the full run down). DIY Etching Solution [Stephen Hobley via Make] Latest Features How-To Geek ETC Macs Don’t Make You Creative! So Why Do Artists Really Love Apple? MacX DVD Ripper Pro is Free for How-To Geek Readers (Time Limited!) HTG Explains: What’s a Solid State Drive and What Do I Need to Know? How to Get Amazing Color from Photos in Photoshop, GIMP, and Paint.NET Learn To Adjust Contrast Like a Pro in Photoshop, GIMP, and Paint.NET Have You Ever Wondered How Your Operating System Got Its Name? Etch a Circuit Board using a Simple Homemade Mixture Sync Blocker Stops iTunes from Automatically Syncing The Journey to the Mystical Forest [Wallpaper] Trace Your Browser’s Roots on the Browser Family Tree [Infographic] Save Files Directly from Your Browser to the Cloud in Chrome and Iron The Steve Jobs Chronicles – Charlie and the Apple Factory [Video]

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  • Introducing Kiddo: A Ruby DSL for building simple WPF and Silverlight applications

    - by fdumlao
    Read the original article here... As a long time Ruby lover and deep rooted .NET supporter, I was probably more psyched than anyone I knew when IronRuby 1.0 was finally released. I immediately grabbed and started building some apps with it to see where the boundaries were going to lie between IronRuby and ruby.exe, and so far I've been pleasantly surprised by how many things just work as I'd expect. I then started to try out some of my favorite libs that I was sure would not work with IronRuby, and I wasn't surprised at all when _why's amazing Shoes library didn't work. Being somewhat familiar with Shoes (it's a great DSL for building simple UIs in Ruby) I felt it wouldn't be that difficult to port it over and as it turned out, someone else had already started the work. As cool as this was, I was never quite satisfied with good 'ol shoes. While it was quite complete, it lacked simple extensibility points, and although easy, it wasn't quite "kid friendly". At the same time on the .NET side of the fence, IronRuby could easily compile XAML to create WPF and Silverlight UIs, but trying to do it declaratively in plain Ruby was no fun at all. And so, the Shoes-inspired, WPF/Silverlight GUI DSL was born. (and it lives here: http://bitbucket.org/fdumlao/kiddo/src) Introducing Kiddo Tell you what. Let's start with a quick code example first. We'll build a useful app that we can use to quickly reverse strings whenever we need it. Read the complete article here...

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  • Upgraded Linux, now CMS Made Simple is spewing errors

    - by Paul Tomblin
    I upgraded my host from Debian Lenny to Debian Squeeze, and now my CMS Made Simple site is spewing PHP errors all over the screen. I thought I'd upgrade the CMS because I haven't done so in a while, but Google Chrome tells me that the CMS Made Simple site is infested with malware. What are my options now? Example errors: Deprecated: Assigning the return value of new by reference is deprecated in /www/danmurn/cms/include.php on line 73 Deprecated: Assigning the return value of new by reference is deprecated in /www/danmurn/cms/include.php on line 162 Deprecated: Assigning the return value of new by reference is deprecated in /www/danmurn/cms/include.php on line 240 Warning: session_start() [function.session-start]: Cannot send session cookie - headers already sent by (output started at /www/danmurn/cms/include.php:73) in /www/danmurn/cms/include.php on line 34 Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /www/danmurn/cms/include.php:73) in /www/danmurn/cms/include.php on line 34 Deprecated: Function set_magic_quotes_runtime() is deprecated in /www/danmurn/cms/include.php on line 62 Deprecated: Assigning the return value of new by reference is deprecated in /www/danmurn/cms/lib/classes/class.global.inc.php on line 184 Deprecated: Assigning the return value of new by reference is deprecated in /www/danmurn/cms/lib/classes/class.global.inc.php on line 196

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  • F# WPF Form &ndash; the basics

    - by MarkPearl
    I was listening to Dot Net Rocks show #560 about F# and during the podcast Richard Campbell brought up a good point with regards to F# and a GUI. In essence what I understood his point to be was that until one could write an end to end application in F#, it would be a hard sell to developers to take it on. In part I agree with him, while I am beginning to really enjoy learning F#, I can’t but help feel that I would be a lot further into the language if I could do my Windows Forms like I do in C# or VB.NET for the simple reason that in “playing” applications I spend the majority of the time in the UI layer… So I have been keeping my eye out for some examples of creating a WPF form in a F# project and came across Tim’s F# Twitter Stream Sample, which had exactly this…. of course he actually had a bit more than a basic form… but it was enough for me to scrap the insides and glean what I needed. So today I am going to make just the very basic WPF form with all the goodness of a XAML window. Getting Started First thing we need to do is create a new solution with a blank F# application project – I have made mine called FSharpWPF. Once you have the project created you will need to change the project type from a Console Application to a Windows Application. You do this by right clicking on the project file and going to its properties… Once that is done you will need to add the appropriate references. You do this by right clicking on the References in the Solution Explorer and clicking “Add Reference'”. You should add the appropriate .Net references below for WPF & XAMl to work. Once these references are added you then need to add your XAML file to the project. You can do this by adding a new item to the project of type xml and simply changing the file extension from xml to xaml. Once the xaml file has been added to the project you will need to add valid window XAML. Example of a very basic xaml file is shown below… <Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="F# WPF WPF Form" Height="350" Width="525"> <Grid> </Grid> </Window> Once your xaml file is done… you need to set the build action of the xaml file from “None” to “Resource” as depicted in the picture below. If you do not set this you will get an IOException error when running the completed project with a message along the lines of “Cannot locate resource ‘window.xaml’ You then need to tie everything up by putting the correct F# code in the Program.fs to load the xaml window. In the Program.fs put the following code… module Program open System open System.Collections.ObjectModel open System.IO open System.Windows open System.Windows.Controls open System.Windows.Markup [<STAThread>] [<EntryPoint>] let main(_) = let w = Application.LoadComponent(new System.Uri("/FSharpWPF;component/Window.xaml", System.UriKind.Relative)) :?> Window (new Application()).Run(w) Once all this is done you should be able to build and run your project. What you have done is created a WPF based window inside a FSharp project. It should look something like below…   Nothing to exciting, but sufficient to illustrate the very basic WPF form in F#. Hopefully in future posts I will build on this to expose button events etc.

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  • What to think about when designing a simple GUI for a quiz game

    - by PeterK
    I am coming close to finish my first iPhone game ever, as a matter of fact also my first programming experience ever, which is a quiz game. I have all the functionality i want and is currently polishing it both from a code point of view as well as looking at the GUI. My initial idea was not to use any specific graphics but rather focus on the game experience and simplicity and by that only using background color, orange, and white text as well as buttons. The design is based on that all ages, from learning to read, should be able to host and play this game. However, as i am now getting close to the finish line i am starting to think what is needed from a GUI point of view. I would like to ask for some advice what to think about when designing a GUI. Is it considered OK without any 'fancy' graphics, what is the risk without it etc.? Also, what colors goes well together if i choose to use a simple GUI. I am thinking about color blindness etc. In other words how do i design a good and effective GUI for a simple game as mine? Thanks

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  • create a simple game board android

    - by user2819446
    I am a beginner in Android and I want to create a very simple 2D game. I've already programmed a Tic-Tac-Toe game. The drawing of the game board and connecting it with my game and input logic was quite difficult (as it was done separately, canvas drawing, calculating positions, etc). By now I figured out that there must be a simpler way. All I want is a simple grid; something like this: http://www.blelb.com/deutsch/blelbspots/spot29/images/hermannneg.gif. The edges should be visible and black, and each cell editable, containing either an image or nothing, so I can detect if the player is on that cell or not, move it... Think of it as Chess or something similar. Searching the internet during the last days, I am a bit overwhelmed of all the different options. After all, I think Gridview or Gridlayout is what I am searching for, but I'm still stuck. I hope you can help me with some good advice or maybe a link to a nice tutorial. I have checked several already, and none were exactly what I was searching for.

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  • Representing and executing simple rules - framework or custom?

    - by qtips
    I am creating a system where users will be able to subscribe to events, and get notified when the event has occured. Example of events can be phone call durations and costs, phone data traffic notations, and even stock rate changes. Example of events: customer 13532 completed a call with duration 11:45 min and cost $0.4 stock rate for Google decreased with 0.01% Customers can subscribe to events using some simple rules e.g. When stock rate of Google decreases more than 0.5% When the cost of a call of my subscription is over $1 Now, as the set of different rules is currently predefined, I can easily create a custom implemention that applies rules to an event. But if the set of rules could be much larger, and if we also allow for custom rules (e.g. when stock rate of Google decreses more than 0.5% AND stock rate of Apple increases with 0.5%), the system should be able to adapt. I am therefore thinking of a system that can interpret rules using a simple grammer and then apply them. After som research I found that there exists rule-based engines that can be used, but I am unsure as they seem too complicated and may be a little overkill for my situation. Is there a Java framework suited for this area? Should we use framework, a rule engine, or should we create something custom? What are the pros and cons?

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  • Freemake–Incredibly Simple, Yet Powerful Free Video Convertor

    - by Gopinath
    Are you looking for an easy to use and powerful video convertor that lets you to convert any video to iPad, iPhone, iPod, PSP, PS3 or Android smartphones format? Here is Freemake Video Convertor. Freemake Video Convertor belongs to the few set of apps that we love on first use – like love at first sight. It’s user interface clean, colourful and very friendly. Like Apple products “it just works” without any learning curve. It’s a one stop application for all your video processing needs- converting, editing, and burning. The predefined profiles offered by the application makes it simple to convert a video to fit into devices like iPad, iPhone, iPod, blackberry and any other smartphone out there. It works with 200+ input video formats, converts to almost all the popular formats we need. You can extract MP3 audio from videos, convert a bunch of photos to a beautiful video, add subtitles to a video, remix video with a music track, upload to YouTube, burn them to DVD, create an ISO and the list goes on. You can read them over here. This application is simply the best video conversion tool available in the market. Need a proof – check out the awards this application received on their home page: Lifehacker Best of 2010, PC Mag Best of 2011, Download Squad Top 2010, Softpedia 5 Stars. Download Freemaker Free Video Convertor This article titled,Freemake–Incredibly Simple, Yet Powerful Free Video Convertor, was originally published at Tech Dreams. Grab our rss feed or fan us on Facebook to get updates from us.

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  • Good design for a simple site that contains a blog

    - by bporter
    What is a good design for a simple web site with mostly static pages and a blog? I am helping a friend build this for their small business. We are looking for a simple approach that can be implemented fairly quickly. (I am a programmer and can help with coding, hosting, etc.) One option is to use a site like virb, which lets you choose from one of their themes and build a site pretty easily. You can also include a blog. They host the site for a pretty low monthly rate. I recommended this option, but my friend wants a design that is unique and custom. So, I took one of the themes and started modifying the HTML and CSS. This might still be a good option, but... ...If we are going to greatly modify it, why not just create the static pages from scratch and use something like Wordpress for the blog. Is this a good option? It looks fairly easy to integrate Wordpress with a site so that the design and behavior are really cohesive. Is this a good idea? Do you recommend any other approaches?

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  • Simple dependency tree diagram generator

    - by foampile
    I have a need to produce a simple dependency tree diagram. The input data would be in the following simple format: ITEM_NAME DEPENDENCY ---------------------------- ITEM_101 ITEM_75 ITEM_102 ITEM_77 ITEM_102 ITEM_61 ITEM_102 ITEM_11 This means that ITEM_101 depends on ITEM_75 and ITEM_102 depends on items ITEM_77, ITEM_61 and ITEM_11. So the diagram would have items ITEM_77, ITEM_61 and ITEM_11 in one vertical level and ITEM_102 would be below it with a line connecting each of the three dependencies to ITEM_102. The same would be for ITEM_101, ITEM_75 would be somewhere above it and there would be a line connecting it. In the real world this tree represents a hierarchy of scheduling jobs. We have a very extensive workload automation hierarchy in Autosys and I have heard that its front end utility has something like this tree visual representation, however, for some reason, that utility has been disabled by admins. My business users want to see this hierarchy in an easy-to-consume format. I was hoping that I won't have to program something like this from scratch because it seems like quite a common reporting requirement and the input data is simply formatted. My question is: is there a FOSS tool that takes standardized data input and produces such a hierarchical tree? Thanks

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  • Please Help - PHP Form, when no text is entered [migrated]

    - by Joe Turner
    I'm creating a mobile landing page and I have also created a form that allows me to create more, by duplicating a folder that's host to a template file. The script then takes you to a page where you input the company details one by one and press submit. Then the page is created. My problem is, when a field is left out (YouTube for instance), the button is created and is blank. I would like there to be a default text for when there is no text. I've tried a few things and have been struggling to make this work for DAYS! <?php $company = $_POST["company"]; $phone = $_POST["phone"]; $colour = $_POST["colour"]; $email = $_POST["email"]; $website = $_POST["website"]; $video = $_POST["video"]; ?> <div id="contact-area"> <form method="post" action="generate.php"><br> <input type="text" name="company" placeholder="Company Name" /><br> <input type="text" name="slogan" placeholder="Slogan" /><br> <input class="color {required:false}" name="colour" placeholder="Company Colour"><br> <input type="text" name="phone" placeholder="Phone Number" /><br> <input type="text" name="email" placeholder="Email Address" /><br> <input type="text" name="website" placeholder="Full Website - Include http://" /><br> <input type="text" name="video" placeholder="Video URL" /><br> <input type="submit" value="Generate QuickLinks" style="background:url(images/submit.png) repeat-x; color:#FFF"/> </form> That's the form. It takes the variables and post's them to the file below. <?php $File = "includes/details.php"; $Handle = fopen($File, 'w'); ?> <?php $File = "includes/details.php"; $Handle = fopen($File, 'w'); $Data = "<div id='logo'> <h1 style='color:#$_POST[colour]'>$_POST[company]</h1> <h2>$_POST[slogan]</h2> </div> <ul data-role='listview' data-inset='true' data-theme='b'> <li style='background-color:#$_POST[colour]'><a href='tel:$_POST[phone]'>Phone Us</a></li> <li style='background-color:#$_POST[colour]'><a href='mailto:$_POST[email]'>Email Us</a></li> <li style='background-color:#$_POST[colour]'><a href='$_POST[website]'>View Full Website</a></li> <li style='background-color:#$_POST[colour]'><a href='$_POST[video]'>Watch Us</a></li> </ul> \n"; fwrite($Handle, $Data); fclose($Handle); ?> and there is what the form turns into. I need there to be a default link put in incase the field is left blank, witch it is sometimes. Thanks in advance guys.

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  • DIY Halloween Decoration Uses Simple Silohuettes

    - by Jason Fitzpatrick
    While many of the Halloween decorating tricks we’ve shared over the years involve lots of wire, LEDs, and electronic guts, this one is thoroughly analog (and easy to put together). A simple set of silhouettes can cheaply and quickly transform the front of your house. Courtesy of Matt over at GeekDad, the transformation is easy to pull off. He explains: It’s really just about as simple as you could hope for. The materials needed are: black posterboard or black-painted cardboard; colored cellophane or tissue paper; and tape. The only tools needed are: measuring tape; some sort of drawing implement — chalk works really well; and scissors and/or X-Acto knife. And while you need some drawing talent, the scale is big enough and the need for precision little enough that you don’t need that much. For a more thorough rundown of the steps hit up the link below or hit up Google Images to find some monster silhouette inspiration. Window Monsters [Geek Dad] How Hackers Can Disguise Malicious Programs With Fake File Extensions Can Dust Actually Damage My Computer? What To Do If You Get a Virus on Your Computer

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  • Extremely simple online multiplayer game

    - by Postscripter
    I am considering creating a simple multiplayer game, which focuses on physics and can accommodate up to 30 players per session. Very simple graphics, but smart physics (pushing, weight and gravity, balance) is required. After some research I found a good java script (framework ??) called box2d.js I found the demo to be excellent. this is is kind of physics am looking for in my game. Now, what other frameworks will I need? Node.js?? Prototype.js?? (btw, I found the latest versoin of protoype.js to be released in 2010...?? is this still supported? Should I avoid using it?) What bout HTML 5 and Canvas? would I need them? websockets? Am a beginner in web programming + game programming world. but I will learn fast, am computer science graduate. (but no much web expeience but know essentionals javascript, html, css..). I just need a guiding path to build my game. Thanks

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  • creative & complex vs simple and readable

    - by Shirish11
    Which is a better option? Its not always that when you have something creative your code is going to look ugly. But at times it does go a bit ugly. e.g. if ( (object1(0)==object2(0) && (object1(1)==object2(1) && (object1(2)==object2(2) && (object1(3)==object2(3)){ retval = true; else retval = false; is simple and readable bool retValue = (object1(0)==object2(0)) && (object1(1)==object2(1)) && (object1(2)==object2(2)) && (object1(3)==object2(3)); but having something like this will make some newbies scratch their heads. So what do I go for? including simple code everywhere might sometime hamper my performance. what I could think of was commenting wherever necessary but at times u get too curious to know what is actually happening. Any suggestions are welcome.

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  • SQL to XML open data made simple

    - by drrwebber
    The perennial question for people is how to easily generate XML from SQL table content?  The latest CAM Editor release really tackles this head on by providing a powerful and simple toolset.  Firstly you can visually browse your SQL tables and then drag and drop from columns and tables into the XML structure editor.   This gives you a code-free method of describing the transformation you require.  So you do not need to know about the vagaries of XML and XSD schema syntax. Second you can map directly into existing industry domain XML exchange structures in the XML visual editor, again no need to wrestle with XSD schema, you have WYSIWYG visual control over what your output will look like. If you do not have a target XML structure and need to build one from scratch, then the CAM Editor makes this simple.  Switch the SQL viewer into designer mode, then take your existing SQL table and drag and drop it into the XML structure editor.  Automatically the XML wizard tool will take your SQL column names and definitions and create equivalent XML for you and insert the mappings. Simply save the structure template, and run the Open Data generator menu option, and your XML is built for you. Completely code-free template driven development. To see this in action, see our video demonstration links and then download the tools and samples and try it yourself.

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  • How to simulate browser form POST method using PHP/cURL

    - by user283266
    I'm trying to simulate browser with POST method using PHP/cURL. When I looked at that live Http header it shows Content-Type: multipart/form-data. I checked on the internet where it was suggested that cURL will send multipart/form-data when a custom headers is specified to Content-Type: multipart/form-data. $headers = array( 'Content-Type' => 'multipart/form-data; boundary='.$boundary ); This didn't work for me either when I print_r(curl_getinfo()) it showed [content_type] => text/html; charset=UTF-8 Which means cURL sent a default headers I also read that sending/uploading a file with cURL will cause data to be send as multipart/form-data. I created a file which curl uploaded but again when I ran curl_getinfo I got [content_type] => text/html; charset=UTF-8 $data_array = array("field" => "@c:\file_location.txt"); I also tried to read a file content so that the only thing sent would be content NOT ATTACHED FILE but this didn't work for me curl_getinfo shows [content_type] => text/html; charset=UTF-8. $data_array = array("field" => "<c:\file_location.txt"); // note @ replaced with < Do I miss somthing here? This is the referer url POST somepath HTTP/1.1 Host: www(dot)domain(dot)com User-Agent: Mozilla/5.0 (Windows) Gecko/13081217 Firefox/3 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-us,en;q=0.5 Accept-Encoding: gzip,deflate Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7 Keep-Alive: 300 Connection: keep-alive Referer: url/some-file.php Content-Type: multipart/form-data; boundary=--------------------------$boundary Content-Length: $some_number ----------------------------$boundary Content-Disposition: form-data; name="$some_Value1" $some_text1 ----------------------------$boundary Content-Disposition: form-data; name="$some_Value2" $some_text2 ----------------------------$boundary Content-Disposition: form-data; name="$some_Value3" $some_text3 ----------------------------$boundary Content-Disposition: form-data; name="$some_Value4" $some_text4 ----------------------------$boundary Content-Disposition: form-data; name="$some_Value5" $some_text5 ----------------------------$boundary Content-Disposition: form-data; name="$some_Value6" $some_text6 ----------------------------$boundary Content-Disposition: form-data; name="$some_Value7" $some_text7 ----------------------------$boundary Content-Disposition: form-data; name="$some_Value8" $some_text8 ----------------------------$boundary Content-Disposition: form-data; name="$some_Value9" ----------------------------$boundary Content-Disposition: form-data; name="$some_Value10" ----------------------------$boundary-- Here is a piece of code. <? //Include files set_time_limit(0); include'body.php'; include'keyword.php'; include'bio.php'; include'summary.php'; include'headline.php'; include'category.php'; include'spin.php'; include'random-text.php'; $category = category(); $headline = headline() ; $summary = summary(); $keyword = keyword(); $body = body(); $bio = bio(); $target="url"; $ref ="url_ref"; $c = "Content-Disposition: form-data; name="; $boundary = "---------------------------".random_text(); $category = category(); $headline = headline() ; $summary = summary(); $keyword = keyword(); $body = body(); $bio = bio(); // emulating content form as it appears on livehttp header $data = "\r\n".$boundary."\r\n".$c."\"pen_id\"\r\n\r\n".$Auth_id."\r\n".$boundary."\r\n".$c."\"cat_id\"\r\n\r\n".category()."\r\n".$boundary."\r\n".$c."\"title\"\r\n\r\n".headline()."\r\n".$boundary."\r\n".$c."\"meta_desc\"\r\n\r\n".summary()."\r\n".$boundary."\r\n".$c."\"meta_keys\"\r\n\r\n".keyword()."\r\n".$boundary."\r\n".$c."\"content\"\r\n\r\n".body()."\r\n".$boundary."\r\n".$c."\"author_bio\"\r\n\r\n".bio()."\r\n".$boundary."\r\n".$c."\"allow_comments\"\r\n\r\ny\r\n".$boundary."\r\n".$c."\"id\"\r\n\r\n\r\n".$boundary."\r\n".$c."\"action\"\r\n\r\n\r\n".$boundary."--\r\n"; // inserting content into a file $file = "C:\file_path.txt"; $fh = fopen($file, 'w+') or die("Can't open file"); fwrite($fh,$data); fclose($fh); // pulling out content from a file as multipart/form-data $data_array = array ("field" => "<C:\file_path.txt"); $headers = array ( 'POST /myhome/article/new HTTP/1.1', 'Host: url', 'User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.20) Gecko/20081217 Firefox/2.0.0.20 (.NET CLR 3.5.30729)', 'Accept: text/html,application/xhtml+xml,application/xml;q=0.9;q=0.8', 'Accept-Language: en-us,en;q=0.5', 'Accept-Encoding: gzip,deflate', 'Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7', 'Keep-Alive: 300', 'Connection: keep-alive', 'Content-Type: multipart/form-data; boundary='.$boundary, 'Content-Length: '.strlen($data), ); # Create the cURL session $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, $target); // Define target site curl_setopt($ch, CURLOPT_POST,1); curl_setopt($ch, CURLOPT_HEADER, $headers); // No http head //curl_setopt($ch, CURLOPT_REFERER, $ref); curl_setopt($ch, CURLOPT_NOBODY, FALSE); curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE); // Return page in string curl_setopt($ch, CURLOPT_COOKIEJAR, "c:\cookie\cookies.txt"); // Tell cURL where to write curl_setopt($ch, CURLOPT_COOKIEFILE, "c:\cookie\cookies.txt"); // Tell cURL which cookies //curl_setopt($ch, CURLOPT_USERAGENT, $agent); curl_setopt($ch, CURLOPT_POST, TRUE); curl_setopt($ch, CURLOPT_POSTFIELDS, "$data_array"); curl_setopt($ch, CURLOPT_FOLLOWLOCATION, TRUE); // Follow redirects curl_setopt($ch, CURLOPT_MAXREDIRS, 4); # Execute the PHP/CURL session and echo the downloaded page $page = curl_exec($ch); $err = curl_error($ch); $info =curl_getinfo($ch); # Close the cURL session curl_close($ch); print_r($err); print_r($info); ?>

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  • SQL SERVER – Signal Wait Time Introduction with Simple Example – Wait Type – Day 2 of 28

    - by pinaldave
    In this post, let’s delve a bit more in depth regarding wait stats. The very first question: when do the wait stats occur? Here is the simple answer. When SQL Server is executing any task, and if for any reason it has to wait for resources to execute the task, this wait is recorded by SQL Server with the reason for the delay. Later on we can analyze these wait stats to understand the reason the task was delayed and maybe we can eliminate the wait for SQL Server. It is not always possible to remove the wait type 100%, but there are few suggestions that can help. Before we continue learning about wait types and wait stats, we need to understand three important milestones of the query life-cycle. Running - a query which is being executed on a CPU is called a running query. This query is responsible for CPU time. Runnable – a query which is ready to execute and waiting for its turn to run is called a runnable query. This query is responsible for Signal Wait time. (In other words, the query is ready to run but CPU is servicing another query). Suspended – a query which is waiting due to any reason (to know the reason, we are learning wait stats) to be converted to runnable is suspended query. This query is responsible for wait time. (In other words, this is the time we are trying to reduce). In simple words, query execution time is a summation of the query Executing CPU Time (Running) + Query Wait Time (Suspended) + Query Signal Wait Time (Runnable). Again, it may be possible a query goes to all these stats multiple times. Let us try to understand the whole thing with a simple analogy of a taxi and a passenger. Two friends, Tom and Danny, go to the mall together. When they leave the mall, they decide to take a taxi. Tom and Danny both stand in the line waiting for their turn to get into the taxi. This is the Signal Wait Time as they are ready to get into the taxi but the taxis are currently serving other customer and they have to wait for their turn. In other word they are in a runnable state. Now when it is their turn to get into the taxi, the taxi driver informs them he does not take credit cards and only cash is accepted. Neither Tom nor Danny have enough cash, they both cannot get into the vehicle. Tom waits outside in the queue and Danny goes to ATM to fetch the cash. During this time the taxi cannot wait, they have to let other passengers get into the taxi. As Tom and Danny both are outside in the queue, this is the Query Wait Time and they are in the suspended state. They cannot do anything till they get the cash. Once Danny gets the cash, they are both standing in the line again, creating one more Signal Wait Time. This time when their turn comes they can pay the taxi driver in cash and reach their destination. The time taken for the taxi to get from the mall to the destination is running time (CPU time) and the taxi is running. I hope this analogy is bit clear with the wait stats. You can check the Signalwait stats using following query of Glenn Berry. -- Signal Waits for instance SELECT CAST(100.0 * SUM(signal_wait_time_ms) / SUM (wait_time_ms) AS NUMERIC(20,2)) AS [%signal (cpu) waits], CAST(100.0 * SUM(wait_time_ms - signal_wait_time_ms) / SUM (wait_time_ms) AS NUMERIC(20,2)) AS [%resource waits] FROM sys.dm_os_wait_stats OPTION (RECOMPILE); Higher the Signal wait stats are not good for the system. Very high value indicates CPU pressure. In my experience, when systems are running smooth and without any glitch the Signal wait stat is lower than 20%. Again, this number can be debated (and it is from my experience and is not documented anywhere). In other words, lower is better and higher is not good for the system. In future articles we will discuss in detail the various wait types and wait stats and their resolution. Read all the post in the Wait Types and Queue series. Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: Pinal Dave, PostADay, SQL, SQL Authority, SQL DMV, SQL Performance, SQL Query, SQL Scripts, SQL Server, SQL Tips and Tricks, SQL Wait Stats, SQL Wait Types, T SQL, Technology

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