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his article shows you how to use the most important iterator classes: ArrayIterator, DirectoryIterator, FilterIterator, and so forth, found in the Standard PHP Library (SPL), and how to integrate SPL with PHP Data Objects (PDO). The Standard PHP Library The SPL represents a collection of interfaces and classes for PHP 5 that help resolve some common problems and that let developers take full advantage of object-oriented programming. Some of the SPL's most used capabilities are: advanced array access, the ability to customize collection iteration with foreach or while, enhanced file and directory access, and advanced SimpleXML object handling. But the best new functionality that the SPL provides comes in the form of iterators. According to Wikipedia, an iterator is an object that allows a programmer to traverse through all the elements of a collection, regardless of its specific implementation.
Dieses Tutorial zeigt die Programmierung eines eigenen BBCode-Parsers. Grundkenntnisse im Umgang mit Regular Expressions (kurz: RegEx) sind sehr vorteilhaft, um die Funktionsweise nachvollziehen zu können! Inhaltsverzeichnis 1) Einleitung und Bezug 2) Die Ausnahme "[noparse]" 3) Das Kernstück: Der Reguläre Ausdruck (RegEx) 4) Die Parameter-Zeichenkette nutzbar machen 5) Umstellen der Callback-Funktion 6) Ein paar einfache Beispiele 6.1) Beispiel: Fett , kursiv und unterstrichen 6.2) Beispiel: URLs 7) Die Verwendung optionaler Parameter 8) Nicht existierende BBCodes im Text belassen 9) BBCodes ohne Close-Tag 10) Zusammenfassung 11) Abschließende Worte
Project homepage This is the project homepage of the StringParser_ BBCode class. With the help of this class it is possible to parse so-called BB-Codes.
Google was a better search engine than it's predecessors for a number of reasons, but probably the most well known one is PageRank, the algorithm for measuring the importance of a page based on what links to it. Though not necessarily that useful on its own, this kind of link analysis can be very helpful as part of a general information retrieval system, or when looking at any kind of network, such as a friend graph from a social network. Larry Page came up with PageRank as a way of measuring the importance of a page while at Stanford in the mid nineties. The idea is that there is a random surfer, who starts on web page then browses through in a somewhat random way. For each page the surfer visits he randomly chooses one of the links from that page and follows it.
This PHP tutorial will show how to create a simple PHP class to search the flickr site for some photos. To get the data we use the flickr API to run a simple search and return the results in a serialized array. We will be using the php function "file_get_contents" to receive data from flickr. The data which we will receive will be a serialized PHP array which means all we need to do is unserialize the array and we will easily be able to use the data returned. As an alternative we can use a cURL function to get the data, for example if the function "file_get_contents" is not allowed on your web host. API Authentication
SQL injection is a technique often used to attack data driven applications. [ 1 ] This is done by including portions of SQL statements in an entry field in an attempt to get the website to pass a newly formed rogue SQL command to the database (e.g., dump the database contents to the attacker). SQL injection is a code injection technique that exploits a security vulnerability in an application's software. The vulnerability happens when user input is either incorrectly filtered for string literal escape characters embedded in SQL statements or user input is not strongly typed and unexpectedly executed. SQL injection is mostly known as an attack vector for websites but can be used to attack any type of SQL database. In operational environments, it has been noted that applications experience an average of 71 attempts an hour. [ 2 ]
This article is intended for readers who have experience using PHP and MySQL. You should also have a general understanding of databases and programming (both procedural and object-oriented) as well as how to use PHP to execute a simple query to MySQL. I will not cover how to install PHP or MySQL, however at the end of the article are some links to help you get started with the installation process and for some further reading on the subject. I will be covering the basics of prepared statements in PHP and MySQLi and why you should consider using them in your own code as well as some technical explanation as to why you should use them.
Numerous PHP Frameworks have evolved to enable rapid web development with PHP. However even greater number of standalone PHP libraries and classes are available which provide similar benefits. W3Avenue has compiled a list of some really useful classes and libraries that every PHP developers should be familiar with. Whether you like to use a PHP Framework or prefer to work without one, your productivity can multiply with the help of these libraries and classes. Database
One of the primary reasons why WordPress is the most popular CMS platform available is the sheer level of customizability that it brings to the table. Today, we’ll review the process of integrating one of those popular features, shortcodes , in the most user friendly way possible, into our theme. A Visual Crash-Course in Shortcodes A Word From the Author Even though there are a few trillion options to choose from, WordPress has comfortably taken the crown as the king of CMSs and blogging platforms with its incredible flexibility.
Overview The purpose of this tutorial is to discuss in detail how to create a NuSOAP/PHP/SOAP web service using Adobe Dreamweaver CS4. This tutorial is ideal for beginners and experts alike. I wrote an article some time ago discussing how to develop SOAP/PHP web services using NuSOAP. This was a very general tutorial and didn’t go into much detail in relation to actually writing your first web service. This tutorial uses some code from Scott Nichol’s website.
People often ask about scalar/basic typehints. Here is a drop in class that I use in my MVC framework that will enable typehints through the use of a custom error handler. Note: You should include this code above all other code in your include headers and if you are the using set_error_handler() function you should be aware that this uses it as well. You may need to chain your set_error_handlers()