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• Middle tier language for interfacing C/C++ with db and web app

  - by ggkmath

  I have a web application requiring a middle-tier language to communicate between an oracle database and math routines on a Linux server and a flex-based application on a client. I'm not a software expert, and need recommendations for which language to use for the middle-tier. The math routines are currently in Matlab but will be ported to C (or C++) as shared libraries. Thus, by default there's some C or C++ communication necessary. These routines rely on FFTW (www.fftw.org), which is called directly from C or C++ (thus, I don't see re-writing these routines in another language). The middle tier must manage traffic between the client, the math routines, and the Oracle database. The client will trigger the math routines aynchronously, and the results saved in the db and transferred back to the client, etc. The middle-tier will also need to authenticate user accounts/passwords, and send out various administrative emails. Originally I thought PhP the obvious choice, but interfacing asychronously multiple clients with the C or C++ routines doesn't seem straightforward. Then I thought, why not just keep the whole middle tier in C or C++, but I'm not sure if this is done in the industry (C or C++ doesn't seem as web-friendly as other languages). There's always Jave + JNI, but maybe that introduces other complications (not sure). Any feedback appreciated.

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• Is adding users to the group www-data safe on Debian?

  - by John

  Many PHP applications do self-configuration and self-updating. This requires apache to have write access to the PHP files. While chgrp'ing them all to www-data appears like a good practice to avoid making them world writable, I also wish to allow users to create new files and edit existing one. Is adding users to the group www-data safe on Debian? For example: 775 root www-data /var/www 644 john www-data /var/www/johns_php_application.php 660 john www-data /var/www/johns_php_applications_configuration_file

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• Trouble migrating Joomla from Linux to Windows server

  - by Matt

  I'm having some trouble migrating a Joomla website from a Linux server to a Windows server. The database came over fine, Besides that, all I've done is download all the files from the current site, and change configuration.php so the log and tmp directories show "./tmp/" and "./logs/" I keep having an error in the PHP log stating PHP Fatal error: Class 'JTable' not found I've downloaded the site multiple times now, and I'm convinced this is a configuration problem, and not a missing file problem. I've even tried installing a mod for backup on the linux box to try and migrate the site, but sadly the mod had problems installing. The new server is running IIS 7.5 on Windows Web Server. PHP 5.2.14 and MySQL

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• How to install Predis

  - by user782860

  I am trying to install Predis, but keep getting a 500 Server errror. Here is what I have done. 1.) Have apache and php installed on Ubuntu Natty. 2.) Used the instructions on this page http://redis.io/download to download Redis. 3.) Ran the following example to confirm that Redis is working: $ src/redis-cli redis> set foo bar OK redis> get foo "bar" 4.) Have a local website at /home/user/Dropbox/documents/www/mywebsite.com/index.php and have confirmed that php is working. 5.) Downloaded the .zip version of Predis ( https://github.com/nrk/predis Version: v0.6.6-PHP5.2 ), and unzipped the contents to /home/user/Dropbox/documents/www/mywebsite.com/. So now Predis is here: /home/user/Dropbox/documents/www/mywebsite.com/nrk-predis-3bf1230/ 6.) Opened the /home/user/Dropbox/documents/www/mywebsite.com/index.php page. Here is its contents: <? define("PREDIS_BASE_PATH", "nrk-predis-3bf1230/lib/"); spl_autoload_register(function($class) { $file = PREDIS_BASE_PATH.strtr($class, '\\', '/').'.php'; if (file_exists($file)) { require $file; return true; } }); $redis = new Predis_Client(); $redis->set('foo', 'bar'); $value = $redis->get('foo'); ?> I have tried changing: $redis = new Predis_Client(); to: $redis = new Predis\Client(); Have tried changing the the PREDIS_BASE_PATH to: /nrk-predis-3bf1230/lib /home/user/Dropbox/documents/www/mywebsite.com/nrk-predis-3bf1230/lib/ /home/user/Dropbox/documents/www/mywebsite.com/nrk-predis-3bf1230/lib Have done a chmod +x on both: /home/user/Dropbox/documents/www/mywebsite.com/nrk-predis-3bf1230/ /home/user/Dropbox/documents/www/mywebsite.com And doing all of the above always results in a 500 server error. What am I doing wrong?

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• Apache reports a 200 status for non-existent WordPress URLs

  - by Jonah Bishop

  The WordPress .htaccess generally has the following rewrite rules: # BEGIN WordPress <IfModule mod_rewrite.c> RewriteEngine On RewriteBase / RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule . /index.php [L] </IfModule> When I access a non-existent URL at my website, this rewrite rule gets hit, redirects to index.php, and serves up my custom 404.php template file. The status code that gets sent back to the client is the correct 404, as shown in this HTTP Live Headers output example: http://www.borngeek.com/nothere/ GET /nothere/ HTTP/1.1 Host: www.borngeek.com {...} HTTP/1.1 404 Not Found However, Apache reports the entire exchange with a 200 status code in my server log, as shown here in a log snippet (trimmed for simplicity): {...} "GET /nothere/ HTTP/1.1" 200 2155 "-" {...} This makes some sense to me, seeing as the original request was redirected to page that exists (index.php). Is there a way to force Apache to report the exchange as a 404? My problem is that bogus requests coming from Bad Guys show up as "successful requests" in the various server statistics software I use (AWStats, Analog, etc). I'd love to have them show up on the Apache side as 404s so that they get filtered out from the stat reports that get generated. I tried adding the following line to my .htaccess, but it had no effect (I'm guessing for the same reason as the previous redirect rules): ErrorDocument 404 /index.php?error=404 Does anyone have a clever way to fix this annoyance? Additional Info: OS is Debian 6.0.4, and Apache version looks to be 2.2.22-3 (hosted on DreamHost) The 404 being sent back to the client is being set by WordPress (i.e. I'm not manually calling header() anywhere)

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• How to verify that all files are intact prior to install?

  - by Kalle H. Väravas

  I'm working on my CMS (in PHP platform) for a long time now. The main program is done and I'm currently developing the Installer part. Installation itself will be fairly simple: Upload all files Verify that the "content/" dir has correct permissions Check if ALL files are intact and not modified [This is the subject of this question] Insert the config data and first settings Run install (Generate all DB tables and insert sample data etc.) Now the question-mark is at step 3. How do I verify ALL files? Verification itself should compare all CMS root-directories files against a list from remote location. List should contain filename, filesize and filetype. This way the user can check, that there are no unnecessary or corrupted files, that could indicated a breach in the software. I have seen some software installers do that, but I cannot find any right now and there for I'm clueless on the most optimal method for this. Of course there always is a simple array trick, but there surely must be a better and faster method?!

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• Loose typing not applied to objects

  - by TecBrat

  I have very little experience working with classes and object. I work in a loosely typed language, PHP. I was working with a SimpleXML object and ran into a problem where I was trying to do math with an element of that object like $results->ProductDetail->{'Net'.$i}; If I echoed that value, I'd get 0.53 but when I tried to do math with it, it was converted to 0 Is there a reason that a loosely typed language would not recognize that as a float and handle it as such? Why would "echo" handle it as a string but the math fail to convert it? Example: $xml='<?xml version="1.0" encoding="UTF-8" ?>'; $xml.='<Test> <Item> <Price>0.53</Price> </Item> </Test>'; $result=simplexml_load_string($xml); var_dump($result->Item->Price); echo '<br>'; echo $result->Item->Price; echo '<br>'; echo 1+$result->Item->Price; echo '<br>'; echo 1+(float)$result->Item->Price; Output: object(SimpleXMLElement)#4 (1) { [0]=> string(4) "0.53" } 0.53 1 1.53

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• Help parsing long (3.5mil lines) text file, line by line and storing data, need a strategy

  - by Jarrod

  This is a question about solving a particular problem I am struggling with, I am parsing a long list of text data, line by line for a business app in PHP (cron script on the CLI). The file follows the format: HD: Some text here {text here too} DC: A description here DC: the description continues here DC: and it ends here. DT: 2012-08-01 HD: Next header here {supplemental text} ... this repeats over and over for a few hundred megs I have to read each line, parse out the HD: line and grab the text on this line. I then compare this text against data stored in a database. When a match is found, I want to then record the following DC: lines that succeed the matched HD:. Pseudo code: while ( the_file_pointer_isnt_end_of_file) { line = getCurrentLineFromFile title = parseTitleFrom(line) matched = searchForMatchInDB(line) if ( matched ) { recordTheDCLines // <- Best way to do this? } } My problem is that because I am reading line by line, what is the best way to trigger the script to start saving DC lines, and then when they are finished save them to the database? I have a vague idea, but have yet to properly implement it. I would love to hear the communities ideas\suggestions! Thank you.

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• Virtual Hosting in RHEL5

  - by Kumar P

  We having RHEL5 linux server with few windows xp clients. We providing web development in php. Now my developers as for common local php server for keep their projects in same place. Currently proxy server and samba sharing are running in RHEL5 server. I installed httpd,php,MySQL in server. And i would like to configure virtual hosting too for LAN. What i want do for it ? In server we have 2 Ethernet ports, 1 for local connection and another one for Internet. Internet provided by ADSL provider. (192.168.0.0 series for ADSL modem connection and 10.1.1.0 for LAN connection. If i want to use virtual hosting , am i want to setup local DNS server ? My requirements are, setup php with mySQL server for Local clients with multiple hosting , without disturbing proxy and samba. Help me to solve it.

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• Linux,Apache,NetBeans,PHP == Windows,IIS/Cassini,Visual Studio,ASP.Net

  - by Neil Smith

  I've worked out how to get my linux based Netbeans PHP development machine to behave much like what happens when you create a new ASP.Net project in Visual Studio. Firstly create multiple PHP project in Netbeans,say for example mysite1 and mysite2. Next edit the apache2/sites-enabled/000-default file and add two virtualhost sections as below <VirtualHost 127.0.1.1> ServerName mysite1.localhost DocumentRoot /var/www/mysite1/ </VirtualHost> <VirtualHost 127.0.2.1> ServerName mysite2.localhost DocumentRoot /var/www/mysite2/ </VirtualHost> For each site you add, pick a different ip address similar to the above where I use the third octet to increment, next edit the etc/hosts file and add the following two lines 127.0.1.1 mysite1.localhost 127.0.2.1 mysite2.localhost Then in Netbeans, go to File->Project Properties click on 'Run Configuration' and set 'Project Url' to http://mysite1.localhost for the first project and http://mysite2.localhost for the second project. That will give you a PHP development box which develops multiple PHP projects similar to how a Visual Studio Windows based box handles multiple ASP.Net sites. Hope this helps someone :)

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• Qt et Zeroconf, ou l'utilisation de services réseau sans configuration, un article de Trenton Schulz traduit par charlespf

  Bonjour est l'implémentation d'Apple concernant le réseau sans configuration (Zeroconf), grâce auquel plusieurs applications offrent leurs services à un réseau local. Utiliser Bonjour simplifie grandement la découverte et l'utilisation des services réseau. Dans cet article, on créera des objets Qt pour manipuler les différentes parties de Bonjour et ensuite on les utilisera dans des exemples d'applications réseau avec Qt.

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• Qt Mobility 1.2 Technology Preview se focalise sur le support de MeeGo, en plus de supporter le Bluetooth et NFC

  Qt Mobility 1.2, la Technology Preview se focalise sur le support de MeeGo En plus de supporter le Bluetooth et NFC Mise à jour du 30/12/2010 par dourouc05 L'équipe de développement de Qt Mobility aimerait nous proposer ses avancées sur la version 1.2 - actuellement toujours en l'état de Technology Preview, rien n'est donc finalisé - ainsi que, comme cela était prévu pour la version 1.2, des paquets RPM pour tester sur MeeGo (en effet, l'objectif principal de cette version était le support de cette plateforme). Les sources sont aussi évidemment disponibles en paquets séparés, si vous souhaitez tester cette technology preview sous d'autres plateformes (pas de paquet disponib...

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• Web server send outgoing request to specific isp gateway

  - by itsoft3g

  I have a server with 5 ISP connections, i am using Apache web server and php engine to run my application. Outgoing request to different API now needs to be send through a specific ISP (or a different IPs). All my API request are sent using PHP and Web server. I am not sure that php will directly communicate with Gateway or it send request via web server. Please help me to setup this. Thanks in advance.

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• Algorithms or patterns for a linked question and answer cost calculator

  - by kmc

  I've been asked to build an online calculator in PHP (and the Laravel framework). It will take the answers to a series of questions to estimate the cost of a home extension. For example, a couple of questions may be: What is the lie of your property? Flat, slightly inclined, heavily inclined. (these suggestive values could have specific values in the underlying calculator like, 0 degrees, 5 degrees, 10 degrees. What is your current flooring system? Wooden, or concrete? These would then impact the results of other questions. Once the size of the extension has been input, the lie of the land will affect how much site works will cost, and how much rubbish collection will cost. The second question will impact the cost of the extensions flooring, as stumping and laying floorboards is a different cost to laying foundations and a concrete slab. It will also influence what heating and cooling systems are available in the calculator. So it's VERY interlinked. The answer to any question can influence the options of other questions, and the end result. I'm having trouble figuring out an approach to this that will allow new options and questions to be plugged in at a later stage without having things too coupled. The Observer pattern, or Laravel's events may be handy, but currently the sheer breadth of the calculator has me struggling to gather my thoughts and see a sensible implementation. Are there any patterns or OO approaches that may help? Thanks!

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• Service layer coupling

  - by Justin

  I am working on writing a service layer for an order system in php. It's the typical scenario, you have an Order that can have multiple Line Items. So lets say a request is received to store a line item with pictures and comments. I might receive a json request such as { 'type': 'Bike', 'color': 'Red', 'commentIds': [3193,3194] 'attachmentIds': [123,413] } My idea was to have a Service_LineItem_Bike class that knows how to take the json data and store an entity for a bike. My question is, the Service_LineItem class now needs to fetch comments and file attachments, and store the relationships. Service_LineItem seems like it should interact with a Service_Comment and a Service_FileUpload. Should instances of these two other services be instantiated and passed to the Service_LineItem constructor,or set by getters and setters? Dependency injection seems like the right solution, allowing a service access to a 'service fetching helper' seems wrong, and this should stay at the application level. I am using Doctrine 2 as a ORM, and I can technically write a dql query inside Service_LineItem to fetch the comments and file uploads necessary for the association, but this seems like it would have a tighter coupling, rather then leaving this up to the right service object.

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• PHP5 giving failed to open stream: HTTP request failed error when using fopen.

  - by mickey

  Hello everyone. This problem seems to have been discussed in the past everywhere on google and here, but I have yet to find a solution. A very simple fopen gives me a PHP Warning: fopen(http://www.google.ca): failed to open stream: HTTP request failed!". The URL I am fetching have no importance because even when I fetch http://www.google.com it doesnt work. The exact same script works on different server. The one failing is Ubuntu 10.04 and PHP 5.3.2. This is not a problem in my script, it's something different in my server or it might be a bug in PHP. I have tried using a user_agent in php.ini but no success. My allow_url_fopen is set to On. If you have any ideas, feel free!

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• Disallow robots.txt from being accessed in a browser but still accessible by spiders?

  - by Michael Irigoyen

  We make use of the robots.txt file to prevent Google (and other search spiders) from crawling certain pages/directories in our domain. Some of these directories/files are secret, meaning they aren't linked (except perhaps on other pages encompassed by the robots.txt file). Some of these directories/files aren't secret, we just don't want them indexed. If somebody browses directly to www.mydomain.com/robots.txt, they can see the contents of the robots.txt file. From a security standpoint, this is not something we want publicly available to anybody. Any directories that contain secure information are set behind authentication, but we still don't want them to be discoverable unless the user specifically knows about them. Is there a way to provide a robots.txt file but to have it's presence masked by John Doe accessing it from his browser? Perhaps by using PHP to generate the document based on certain criteria? Perhaps something I'm not thinking of? We'd prefer a way to centrally do it (meaning a <meta> tag solution is less than ideal).

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• One codebase - lots of hosted services (similar to a basecamp style service) - planning structure

  - by RickM

  We have built a service (PHP Based) for a client, and are now looking to offer it to other clients as a hosted service. For this example, think of it like a hosted forum service, where a client signs up on our site, and is given a subdomain or can use their own domain, and the code picks up the domain, checks it against a 'master' users table, and then loads the content as needed. I'm trying to work out the best way of handling multiple clients. At the moment I can only think of two options that would work: Option 1 - Have 1 set of database tables, but on each table have a column called 'siteid' - this would mean every query has to check the siteid. This would effectively work with just 1 codebase, and 1 database. Option 2 - Have 1 'master' database with all the core stuff such as the client details and their domain. Then when the systen checks the domain, it pulls the clients database details (username/password/dbname) from a table, and loads a second database. The issue here is security of the mysql server details, however it does have the benefit that they are running their own database instead of sharing one. Which option would I be better taking here, and why? Ideally I want it to be fairly easy to convert the 'standalone' script to the 'multi-domain' script as we're on a tight deadline.

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• Places to store basic data

  - by Ella

  I am using PHP. I'm building a fully modular CMS, which is destined for the public. Some people might view this as a framework, but I intend to write a set of extensions for it, extensions that will make it a CMS :P Because it's completely modular I have a problem figuring out how to load extensions. Practically I need to get the list of active extensions, so I can load them inside my base class. I load them by reading some file headers, which contain a "dependency" field. That field decides the order in which I have to instantiate the objects. The problem is that when the CMS starts I have no database interface, because that's an extension too, so I can't store the active extensions list in the database :) You might ask how are extensions activated in the first place. Well - in the administration interface, which is an extension as well (obviously on first install of the CMS there will be some extensions active by default). Could writing that list inside a text file be a solution? The problem is that a lot of hosts are not very nice with scripts when they write files. And since this CMS is public I might have a problem here?

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• In APC+PHP, how much RAM is too much? Is it okay to set apc.shm_size to many GB?

  - by Jeremy Clarke

  On our server we have a LOT of RAM for our traffic levels (16GB). The HTTP processes regularly eat up all CPU and need to be restarted without even getting close to using swap memory, so I'm looking for ways to spend RAM to ease the load on Apache (and/or help the seperate MySQL server which may be breaking Apache). I have many WordPress installs on the HTTPD instance so APC sometimes uses as much as 900MB of ram (according to the apc.php charts). Just in case I have apc.shm_size set to 1600MB which is more than it needs but not more than I can spare. This means there is usually lots of extra RAM available to APC but also very little turnover and fragmentation is never more than 1%. Is this dangerous? Should I be slimming down APC to less than 1GB just on principle? Should I be expecting some turnover within APC in the name of bringing it's overall footprint down? Having so much memory devoted to APC means that in top/htop every single httpd process shows ~1.9GB in the VIRT memory column. Obviously this is shared memory and not used per-process, but could it be hurting our server? NOTE: The problem with the server remains unclear but the effect is that about 60 times a day all 8 CPU's fill up to 100% and everything stops working until Monit sees that Apache is broken and restarts it (Monin also saves the MySQL server). I'm not sure if APC is even part of the problem but I'm trying to optimize everything just in case.

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• Auto Launching PHP-FPM

  - by Seth

  My plist file <?xml version='1.0' encoding='UTF-8'?> <!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd" > <plist version='1.0'> <dict> <key>Label</key><string>org.macports.php-fpm</string> <key>ProgramArguments</key> <array> <string>/opt/local/bin/daemondo</string> <string>--label=php-fpm</string> <string>--start-cmd</string> <string>/opt/local/sbin/php-fpm</string> <string>;</string> <string>--pid=fileauto</string> <string>--pidfile</string> <string>/opt/local/var/run/php-fpm/php-fpm.pid</string> </array> <key>Debug</key><false/> <key>Disabled</key><true/> <key>OnDemand</key><false/> </dict> </plist> After rebooting, it's not loading up automatically. I still have to manually start php-fpm. I have tried unloading and adding RunAtLoad etc. with no luck and tried both these launchctl commands. sudo launchctl load -F /Library/LaunchDaemons/org.macports.php-fpm.plist sudo launchctl load -w /Library/LaunchDaemons/org.macports.php-fpm.plist

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• SEO & Multilingual: would be this a good practise?

  - by Younès

  I am currently making a bilingual website and I'd like to get nice SEO results of course. Here's my idea: The internal links would be composed of the "www" subdomain so that people can share links regardless of their language. Anyway, their language is determined by the HTTP_ACCEPT_LANGUAGE PHP variable. So, they would see http:// www.site.com/mydocument/123 in their adress bar and never see any links like "http:// fr.site.com/mydocument/123" or "http://en.site.com/mydocument/123" The user can always switch the page's language thanks to links in the footer. The switching language link would be : http:// fr.site.com/mydocument/123 , and clicking on it would change his language session and redirects the user to http:// www.site.com/mydocument/123 In case of a crawling bot: I read that if the HTTP_USER_LANGUAGE variable was missing then it's a crawling bot. So, in that case, we set the defaut language as English. Each page, as I mentionned earlier, has a link for another language: On the page: http:// www.site.com/document/1323, the link http:// fr.site.com/document/1323 can be seen by the bot and be crawled. What do you think about this practise ? Would I get good SEO results for each language ?

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• optimizing mod_fcgid for a dediciated site

  - by Mike Williams

  i'm using mod_fcgid and I'm trying to find resources on how i can optimize it for running a dedicated website but have had no luck... so far i have: ive got apache2 running and im trying to have php processes spawned and always running so apache does not have to keep spawning them. # Fastcgi configuration for PHP5 LoadModule fcgid_module modules/mod_fcgid.so MaxRequestsPerProcess 5000 # Maximum number of PHP processes. MaxProcessCount 8 # Number of seconds of idle time before a process is terminated IPCCommTimeout 1800 IdleTimeout 1800 AddHandler fcgid-script .php5 .php4 .php .php3 .php2 .phtml FCGIWrapper /usr/local/cpanel/cgi-sys/php5 .php5 FCGIWrapper /usr/local/cpanel/cgi-sys/php5 .php4 FCGIWrapper /usr/local/cpanel/cgi-sys/php5 .php FCGIWrapper /usr/local/cpanel/cgi-sys/php5 .php3 FCGIWrapper /usr/local/cpanel/cgi-sys/php5 .php2 FCGIWrapper /usr/local/cpanel/cgi-sys/php5 .phtml

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• I need a form to tie MySQL Records together.

  - by John R

  I need a HTML-based form to tie database records together. The user scenario that I envision is somthing like this: A super-user does a search of the database and is delivered a table of records based on that search; each record is numbered with the database-record id. There would also be two text fields next to each record. These text fields would allow: the user to make a reference from one record to another. For example, a user could enter into record id #457 the integer 242 to indicate that there is a correlation with record ID #242. The user would also describe the type of relationship it is. This could be accomplished with a simple integer in the second field that indicates the type of relationship between the two records. When the super-user hits the submit button, all of these relationships are saved in a mySqljoin table. One option is to give me advice on how to implement and code this myself in PHP. However, before I reinvent the wheel, another option is to lead me to a free script that does something similar.

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• correct way to implement auth/acl in mvc

  - by WiseStrawberry

  I am looking into making a correctly laid out MVC auth/acl system. I think I want the authentication of a user (and the session handling) to be seperate from the ACL system. (I don't know why but this seems a good idea from the things I've read) What does mvc have to do with this question you ask? Because I wish for the application to be well integrated with my acl. An example of a controller (CodeIgniter) <?php class forums extends MX_Controller { $allowed = array('users', 'admin'); $need_login = true; function __construct() { //example of checking if logged in. if($this->auth->logged_in() && $this->auth->is_admin()) { echo "you're logged in!"; } } public function add_topic() { if($this->auth->allowed('add_topic') { //some add topic things. } else { echo 'not allowed to add topic'; } } } ?> My thoughts $this->auth would be autoloaded in the system. I would like to check the $allowed array against the user currently (not) logged in and react accordingly. Is this a good way of doing things? I haven't seen much literature on mvc integration and auth. I want to make things as easy as possible.

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