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  • PHP, manipulating images and thumbnails?

    - by learner.php
    I am using php and mysql. I allow my registered users to upload photos, the photos are store in filesystem format, then I will keep the original/max size of : width: 1600px and heigh: 1200px. In the user profile page, I would like to display the image, it maybe one of the 5 types of thumnails: 500x500, 300x300, 200x200, 100x100 or 50x50. What is the best way to create the thumbnails, here are my current solutions: I am thinking of create 1 thumbnail, then from that thumbnail, i will resize in [img src="" width="XX"] tag, alternatively, store the different thumbnails size in database, then get and display it Create 5 thumbnails for each photos? (I am afraid this is a bad way) Whats the best practices?

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  • Stop invalid data in a attribute with foreign key constraint using triggers?

    - by Eternal Learner
    How to specify a trigger which checks if the data inserted into a tables foreign key attribute, actually exists in the references table. If it exist no action should be performed , else the trigger should delete the inserted tuple. Eg: Consider have 2 tables R(A int Primary Key) and S(B int Primary Key , A int Foreign Key References R(A) ) . I have written a trigger like this : Create Trigger DelS BEFORE INSERT ON S FOR EACH ROW BEGIN Delete FROM S where New.A <> ( Select * from R;) ); End; I am sure I am making a mistake while specifying the inner sub query within the Begin and end Blocks of the trigger. My question is how do I make such a trigger ?

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  • Updating value in Linq to SQL IEnumerable

    - by Learner
    Using Linq to SQL: if(!parentlist.childlist.Contains(row1)) parentlist.childlist.Add(row1); else How do I update the required childlist row with row1? Each row of the child list has a unique id. parentlist implements IEnumerable and childlist is IList.

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  • How to create two dimensional array in jquery or js

    - by learner
    I need to create dynamic global two dimensional array in jquery or javascript My function is like this <script> var index = 0; var globalArray = new Array(); function createArray(){ var loop = globalArray[index].length; var name = $.("#uname").val(); if(loop == 0){ globalArray[index][0] = uname; }else{ globalArray[index][loop++] = uname; } } </script> <div><input type="text" id="uname"> <input type='button' value='save' onclick='createArray();'> </div> On click of that button I am getting this error "globalArray[index] is undefined" How can I create one global array using jquery or javascript like this. I dont want any hidden field and all. Please help me. Thanks

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  • Declaration for object for which creation is wrapped in macro

    - by learner
    The following macro is defined in our code: #define MSGMacro(obj, arg) MyPaymentClass obj(arg) Where MSGMacro is used to creates the object of type MyPaymentClass using code like MSGMacro(Card, 1); MSGMacro(Cash, 2); ---- ---- //removed unwanted things to keep question cleaner. All the above code is in one cpp file, Now the problem is how we can expose these two objects of MyPaymentClass to other units in my project? i.e. I want to use Card and Cash in other CPP files. Please suggest how I can give the declaration for the same in some header file?

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  • Array comparion for multidimensinal array in php

    - by Learner
    Array 1 = pr($plan_data); Array ( [0] => Array ( [AveragePrice] => 9.631161 [EFLUrl] => http://www.championenergyservices.com/register/EFL_API.asp?rateid=161456 [EarlyTerminationFee] => 150 [HurricaneRecovery] => 0.132 [MeterSurcharge] => 3.05 [OffCycle] => 5 [PUCAssessment] => 0.00167 [PlanDescription] => Savings Champ-6 [PlanId] => 57 [PlanIssueDate] => 12/10/2012 [PlanMonthlyFee] => 0 [PlanName] => PN1058 [PlanRate] => 9.3 [PlanRenewablePercent] => 7.2 [PlanTerm] => 6 [PriorityMoveIn] => 36 [ProviderDisplayName] => CenterPoint Energy [ProviderId] => 21 [ProviderInternalName] => CNP_COAST [RateId] => 161456 [RegularMoveIn] => 16 [TDSPPassThrough] => 0.03791 [TOCUrl] => http://www.championenergyservices.com/register/termsandconditions.asp?rateid=161456 [YRACUrl] => http://www.championenergyservices.com/register/\affiliatefiles\YRAC.PDF [provider] => ces [ProductType] => Fixed [Rep] => Champion Energy Services [Zone] => 77479 ) [1] => Array ( [AveragePrice] => 10.1311693 [EFLUrl] => http://www.championenergyservices.com/register/EFL_API.asp?rateid=161458 [EarlyTerminationFee] => 150 [HurricaneRecovery] => 0.132 [MeterSurcharge] => 3.05 [OffCycle] => 5 [PUCAssessment] => 0.00167 [PlanDescription] => Savings Champ-12 [PlanId] => 59 [PlanIssueDate] => 12/10/2012 [PlanMonthlyFee] => 0 [PlanName] => PN1060 [PlanRate] => 9.8 [PlanRenewablePercent] => 7.2 [PlanTerm] => 12 [PriorityMoveIn] => 36 [ProviderDisplayName] => CenterPoint Energy [ProviderId] => 21 [ProviderInternalName] => CNP_COAST [RateId] => 161458 [RegularMoveIn] => 16 [TDSPPassThrough] => 0.03791 [TOCUrl] => http://www.championenergyservices.com/register/termsandconditions.asp?rateid=161458 [YRACUrl] => http://www.championenergyservices.com/register/\affiliatefiles\YRAC.PDF [provider] => ces [ProductType] => Fixed [Rep] => Champion Energy Services [Zone] => 77479 ) [2] => Array ( [AveragePrice] => 10.4311743 [EFLUrl] => http://www.championenergyservices.com/register/EFL_API.asp?rateid=161459 [EarlyTerminationFee] => 150 [HurricaneRecovery] => 0.132 [MeterSurcharge] => 3.05 [OffCycle] => 5 [PUCAssessment] => 0.00167 [PlanDescription] => Green Power-12 [PlanId] => 60 [PlanIssueDate] => 12/10/2012 [PlanMonthlyFee] => 0 [PlanName] => PN1061 [PlanRate] => 10.1 [PlanRenewablePercent] => 100 [PlanTerm] => 12 [PriorityMoveIn] => 36 [ProviderDisplayName] => CenterPoint Energy [ProviderId] => 21 [ProviderInternalName] => CNP_COAST [RateId] => 161459 [RegularMoveIn] => 16 [TDSPPassThrough] => 0.03791 [TOCUrl] => http://www.championenergyservices.com/register/termsandconditions.asp?rateid=161459 [YRACUrl] => http://www.championenergyservices.com/register/\affiliatefiles\YRAC.PDF [provider] => ces [ProductType] => Fixed [Rep] => Champion Energy Services [Zone] => 77479 ) ) Array 2 = pr($temp_val); Array ( [0] => Array ( [id] => 6 [PlanId] => 60 [PlanName] => Bounce 12 + A/C Protection [PlanDescription] => Bounce 12 + A/C Protection - CNP [PlanTerm] => 12 [PlanRate] => [RateId] => [PlanIssueDate] => [PlanMonthlyFee] => [EarlyTerminationFee] => 200.00000 [AveragePrice] => 12.00000 [HurricaneRecovery] => [PlanRenewablePercent] => [ProviderDisplayName] => [ProviderId] => 1 [provider] => bounce [ProductZoneId] => 353 [Zone] => 77479 [ProviderInternalName] => [RegularMoveIn] => [PriorityMoveIn] => [OffCycle] => [TDSPPassThrough] => [PUCAssessment] => [EFLUrl] => [EFLLinkUrl] => http://www.bounceenergy.com/efls/bounce12.pdf [TOCUrl] => [TOCLUrl] => http://www.bounceenergy.com/terms-of-service-fixed.pdf [YRACUrl] => [YRACLUrl] => http://www.bounceenergy.com/yraac.pdf [REP_Name] => [REP_PUCT] => [customer_service_email] => [toll_free_number] => [status] => active [created] => 2012-12-14 12:40:05 [modified] => 2012-12-14 ) [1] => Array ( [id] => 18 [PlanId] => 17 [PlanName] => Online Only - 12 [PlanDescription] => Online Only - 12 [PlanTerm] => 12 [PlanRate] => [RateId] => 386 [PlanIssueDate] => [PlanMonthlyFee] => 100.00000 [EarlyTerminationFee] => 175.00000 [AveragePrice] => 10.00000 [HurricaneRecovery] => [PlanRenewablePercent] => [ProviderDisplayName] => [ProviderId] => 2 [provider] => fulcrum [ProductZoneId] => [Zone] => 77479 [ProviderInternalName] => [RegularMoveIn] => [PriorityMoveIn] => [OffCycle] => [TDSPPassThrough] => [PUCAssessment] => [EFLUrl] => [EFLLinkUrl] => [TOCUrl] => [TOCLUrl] => [YRACUrl] => [YRACLUrl] => [REP_Name] => [REP_PUCT] => [customer_service_email] => [toll_free_number] => [status] => active [created] => 2012-12-14 12:40:15 [modified] => 2012-12-14 ) ) I want to compare this two array and if any key value is different i want to take it an different array.. $result_val= array_diff_assoc($plan_data, $temp_val); Please help me out !!

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  • How to set multiple cakephp projects on local computer?

    - by learner.php
    Hi, I am new to Cakephp, and very excited to learn it. I read the docs, downloaded the files, place it on my www root folder. (I am using WAMP). My question is, can I download 1 cakephp and do for multiple projects, for example I put my cakephp at %webroot%, so my to call my projects: [http://localhost/cake/project1] [http://localhost/cake/project2] and so on...

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  • In Java how instance of and type cast(i.e (ClassName)) works on proxy object ?

    - by learner
    Java generates a proxy class for a given interface and provides the instance of the proxy class. But when we type cast the proxy object to our specific Object, how java handles this internally? Is this treated as special scenario? For example I have class 'OriginalClass' and it implements 'OriginalInterface', when I create proxy object by passing 'OriginalInterface' interface java created proxy class 'ProxyClass' using methods in the provided interface and provides object of this class(i.e ProxyClass). If my understanding is correct then can you please answer following queries 1) When I type cast object of ProxyClass to my class OriginalClass this works, but how java is allowing this? Same in case of instace of? 2) As my knowledge java creates a proxy class only with the methods, but what happen when I try to access attributes on this object? 3) Only interface methods are getting implemented in Proxy, but what happens when I try to access a method which not in interface and only mentioned in the class? Thanks, Student

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  • Problem with basic program using Boost Threads in c++

    - by Eternal Learner
    I have a simple program which creates and executes as thread using boost threads in c++. #include<boost/thread/thread.hpp> #include<iostream> void hello() { std::cout<<"Hello, i am a thread"<<std::endl; } int main() { boost::thread th1(&hello); th1.join(); } The compiler throws an error against the th1.join() line. It says " Multiple markers at this line - undefined reference to `boost::thread::join()' - undefined reference to `boost::thread::~thread()' "

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  • need help to construct query

    - by Learner
    i have the following result and i would like to construct the select query from the following result in java, Please help me how to go about , tablename columnname size order employee name 25 1 employee sex 25 2 employee contactNumber 50 3 employee salary 25 4 address street 25 5 address country 25 6 from this i would like to construct query like select T1.name, T1.sex,T1.contactNumber, T1.salaryT2.street, T2.contry from tablename1[employee] T1, tablename2[address] T2 how to construt the above query in java, here table name can be N also the columname can be also N. Please help me to achieve the above. Thanks and Regards

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  • javax.servlet.ServletException: WriteText method cannot write null text

    - by Learner
    I have created a Web application using JSF+Icefaces+Richfaces+Primefaces.It is working great while I run it from eclipse as a project but When I created its WAR file and deployed in GlassFish Server then while rendering a page it is throwing this exception javax.servlet.ServletException: WriteText method cannot write null text I searched but didn't get any good solution.A quick help is highly appreciated Edit:1 I think this would be the relevant part for this <li class="page_item" id="liMasterSearch"> <!-- this is for hide (<li class="page_item hide" id="liMasterSearch"> applied to every class) --> <h:commandLink value="Search" action="#{masterRenderBean.showSimpleSearch}"></h:commandLink> </li> <li class="page_item" id="liAdvanceSearch"> <h:commandLink value="Advance Search" action="#{masterRenderBean.showADVS}"></h:commandLink> </li> Here you can see two links (1) Search and (2) Advance Search when I click on Search , It shows search page (By rendering-Actually I have included all pages in masterpage and render them on commandlink functions) <h:panelGroup rendered="#{not masterRenderBean.simpleSearch}"> <ui:include src="../../WebPages/SearchPages/MasterSearch.xhtml"></ui:include> </h:panelGroup> But When I click on Advance Search link (on which this part should render) <h:panelGroup rendered="#{not masterRenderBean.advs}"> <ui:include src="../../WebPages/SearchPages/PersonalAdvanceSearch.xhtml"/> </h:panelGroup> The browser show the above exception. NOTE: Keep in mind that this problem is occurring in deploying.It is not coming in actual application when I run it from eclipse from code EDIT:2 I found in server logs that this exception is coming due to acefaces and this portion of code <ace:autoCompleteEntry id="txtplaceofbirth" rows="10" autocomplete="false" minChars="2" width="150" value="#{inputPersonal.selectedplcofBirth}" filterMatchMode="none" valueChangeListener="#{inputPersonal.valueChangeEventCity}"> <f:selectItems value="#{inputPersonal.cities}"/> </ace:autoCompleteEntry></h:outputFormat> is messing up.Any idea Why this is hapening? Edit #3: Here is the full tack trace of exception [#|2012-11-19T09:55:48.026+0500|SEVERE|glassfish3.1.2|javax.enterprise.system.std.com.sun.enterprise.server.logging|_ThreadID=53;_ThreadName=Thread-2;|java.lang.NullPointerException: WriteText method cannot write null text at org.icefaces.impl.context.DOMResponseWriter.writeText(DOMResponseWriter.java:314) at org.icefaces.impl.context.DOMResponseWriter.writeText(DOMResponseWriter.java:340) at com.sun.faces.renderkit.html_basic.OutputMessageRenderer.encodeEnd(OutputMessageRenderer.java:163) at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:875) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1764) at javax.faces.render.Renderer.encodeChildren(Renderer.java:168) at org.icefaces.impl.renderkit.RendererWrapper.encodeChildren(RendererWrapper.java:49) at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:845) at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeRecursive(HtmlBasicRenderer.java:304) at com.sun.faces.renderkit.html_basic.GroupRenderer.encodeChildren(GroupRenderer.java:105) at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:845) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1757) at javax.faces.render.Renderer.encodeChildren(Renderer.java:168) at org.icefaces.impl.renderkit.RendererWrapper.encodeChildren(RendererWrapper.java:49) at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:845) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1757) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1760) at org.icefaces.impl.context.DOMPartialViewContext.processPartial(DOMPartialViewContext.java:142) at javax.faces.component.UIViewRoot.encodeChildren(UIViewRoot.java:981) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1757) at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:391) at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:131) at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:288) at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:121) at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:594) at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1542) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:281) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175) at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:161) at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:331) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231) at com.sun.enterprise.v3.services.impl.ContainerMapper$AdapterCallable.call(ContainerMapper.java:317) at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:195) at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:849) at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:746) at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1045) at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:228) at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137) at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104) at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90) at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79) at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54) at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59) at com.sun.grizzly.ContextTask.run(ContextTask.java:71) at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532) at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513) at java.lang.Thread.run(Thread.java:722) |#]

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  • Fatal error: Cannot use string offset as an array

    - by learner
    Array ( [0] = Array ( [auth_id] = 1 [auth_section] = Client Data Base [auth_parent_id] = 0 [auth_admin] = 1 [sub] = Array ( [0] = Array ( [auth_id] = 2 [auth_section] = Client Contact [auth_parent_id] = 1 [auth_admin] = 1 ) ) ) [1] => Array ( [auth_id] => 6 [auth_section] => All Back Grounds [auth_parent_id] => 0 [auth_admin] => ,4 [sub] => Array ( [0] => Array ( [auth_id] => 7 [auth_section] => Edit Custom [auth_parent_id] => 6 [auth_admin] => 1 ) ) ) [2] => Array ( [auth_id] => 20 [auth_section] => Order Mail [auth_parent_id] => 0 [auth_admin] => 1 [sub] => ) } When I process the sub inner array it shows this error how can I avoid that :)

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  • O(log n) algorithm for merging lists and computing rank?

    - by Eternal Learner
    Given two sorted lists, each containing n real numbers, is there a O(log?n) time algorithm to compute the element of rank i (where i coresponds to index in increasing order) in the union of the two lists, assuming the elements of the two lists are distinct? I can think of using a Merge procedure to merge the 2 lists and then find the A[i] element in constant time. But the Merge would take O(n) time. How do we solve it in O(log n) time?

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  • Problem with a recursive function to find sqrt of a number

    - by Eternal Learner
    Below is a simple program which computes sqrt of a number using Bisection. While executing this with a call like sqrtr(4,1,4) in goes into an endless recursion . I am unable to figure out why this is happening. Below is the function : double sqrtr(double N , double Low ,double High ) { double value = 0.00; double mid = (Low + High + 1)/2; if(Low == High) { value = High; } else if (N < mid * mid ) { value = sqrtr(N,Low,mid-1) ; } else if(N >= mid * mid) { value = sqrtr(N,mid,High) ; } return value; }

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