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When it comes to security, remember that in addition to actual platform and operating system security issues, you need to ensure that you write your application to be secure. When you write PHP applications, apply these seven habits to make sure your applications are as secure as possible: Validate input Guard your file system Guard your database Guard your session data Guard against Cross-Site Scripting (XSS) vulnerabilities Verify form posts Protect against Cross-Site Request Forgeries (CSRF) Validate input
Considering you are here, I can assume you are a desperate folk looking for a possible solution to make built-in MAMP work perfectly using the default packages that comes with clean Snow Leopard installation. Trust me, I was feeling like you are now a few hours before I start this post. Here you’ll see how to enable Apache2, turn PHP 5.3 available on server and also install missing PECL extensions of PHP, such as Imagick ( ImageMagick ), Xdebug , APC and Memcache . Before we start I would assume you have Xcode and Homebrew installed.
If you followed my last blog post , now you have your PHP environment with missing extensions compiled and loaded. But we still lack of PEAR support. This post has the intention to explain how to install PEAR on your default Snow Leopard PHP binary. First open your Terminal and type these commands:
So-called microframeworks such as Sinatra and Camping were created to provide developers with a lightweight alternative to Rails . If your requirements are relatively straightforward, these lightweight solutions can dramatically reduce the learning curve and time required to complete the project. The PHP Limonade framework was created with this goal in mind, providing PHP developers with a low barrier-of-entry to the world of framework driven development without incurring lengthy training overhead.
Outside of installation and configuration issues, reader questions pertaining to user authentication and session management almost certainly rank among the most common I receive on an ongoing basis. The logic itself is pretty straightforward; however, even a simple implementation involves a number of small but important details which aren't always so easy to figure out the first time around. This tutorial serves to dispel much of the confusion by guiding you through the implementation of a simple user authentication feature which will subsequently keep the user logged in via a session . The Login Form Let's start with the easiest part of the feature, creating the login form. There's not much to describe here, as this form consists of just username and password fields, presented here:
There are few Web-related tasks more annoying than registering for a new website account. Providing yet another online entity with various bits of personally identifiable information (did you know that in many cases you can be personally identified simply by providing your age, gender and zip code?) and frustrations surrounding a lengthy and often clumsy registration process are just two of the several aggravations which can arise when creating a new account. In recognition of the widespread reluctance to manage multiple accounts, several decentralized authentication solutions have gained traction, including notably OpenID and Facebook , however such approaches also have problems . So in spite of the availability of these third-party authentication solutions many website developers still choose to go it alone and manage user accounts locally.
When you have more than one page in your PHP-based website and want to keep track of or personalize user activities, or when your application grows to more than just an information board, then it is time to maintain state in the site. The main purpose of maintaining state in PHP applications is to keep track of users and their activities. It can also be used to limit a user's ability to access certain components of a website. Without maintaining state, an e-commerce site would not be able to support shopping on the Internet, because the shopping cart needs to "remember" the products you selected to buy and it needs to maintain state for that. So, why can't you maintain state with HTTP? The main reason is because HTTP is a stateless protocol, meaning that it has no built-in way of maintaining state between transactions.
Some applications need to perform several tasks that may take a while to finish. When there are many tasks to execute, it may take a long time to finish all of them if they are executed sequentially, i.e., one after another. A possible solution for this problem is to execute several tasks at the same time using separate processes or threads. PHP has the pcntl extension that can be used to run multiple processes in parallel.
Har du lyst å lage din egen dynamiske nettside fra bunnen av? Da bør du ta en titt på PHP. [adsense]
Jeg har tidligere hevdet at utviklere som ønsker å lære seg et dynamisk programmeringsspråk bør holde seg langt unna PHP . Jeg tviler på at det finnes noe annet språk hvor det er skrevet like mye drittkode. Likevel tok jeg meg selv i å si på et forum nylig at jeg nå faktisk vurderer å anbefale dem som ønsker å begynne med webutvikling å starte med nettopp PHP. Denne artikkelen handler om hvorfor jeg har endret holdning.
PHP er et dynamisk, tolket og løst typet programmeringsspråk hovedsakelig brukt for å utvikle dynamiske nettsider . PHPs syntaks ligner C og Perl . Den vanligste implementasjonen av PHP er en fri og åpen versjon skrevet i C og distribuert av The PHP Group via php.net og SourceForge . En annen fri og åpen implementasjon, som muliggjør kompilering av PHP-kode til maskinkode , er utviklet av Roadsend Inc. PHP distribueres under PHP-Lisensen . Opprinnelig stod PHP for «Personal Home Page Tools», men betyr i dag " P HP: H ypertext P reprocessor".
PHP is a server-side scripting language designed for web development but also used as a general-purpose programming language . PHP is now installed on more than 20 million websites and 1 million web servers . [ 2 ] Originally created by Rasmus Lerdorf in 1995, the reference implementation of PHP is now produced by The PHP Group. [ 3 ] While PHP originally stood for Personal Home Page , it is now said to stand for PHP: Hypertext Preprocessor , a recursive acronym . [ 4 ] PHP code is interpreted by a web server with a PHP processor module which generates the resulting web page: PHP commands can be embedded directly into an HTML source document rather than calling an external file to process data. It has also evolved to include a command-line interface capability and can be used in standalone graphical applications . [ 5 ]
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