A Programmer’s Introduction to PHP 4.0 phần 1 docx

... can classes written in Visual Basic be called from C# or C++ (or any other .NET language), a class that was written in Visual Basic can be used as a base class for a class written in C#, and ... searches local variables and parameters for a name before searching instance members. When referring to an instance variable with the same name as a parameter, the this.<name>...

Ngày tải lên: 10/12/2013, 16:15

... 103 6D ATABASE A CCESS WITH VB.NET AND ADO.NET 105 Accessing a Database from a Windows Application 106 Using the DataAdapter Configuration Wizard 107 ADO.NET 122 About ADO.NET 122 DataSets 122 Working ... application using Visual Basic 3.0. The application was a data-entry form with a data control, some text boxes, and an OK button a simple application that read and wrote data...

Ngày tải lên: 10/12/2013, 16:15

... simply as attributes in C#) , which are a way to place descriptive information in the metadata along with an object, and then retrieve the data at a later time. Attributes provide a general mechanism ... .NET language), a class that was written in Visual Basic can be used as a base class for a class written in C#, and that class could be used from a C++ class. In other w...

Ngày tải lên: 19/01/2014, 16:20

... can classes written in Visual Basic be called from C# or C++ (or any other .NET language), a class that was written in Visual Basic can be used as a base class for a class written in C#, and ... converted to an intermediate form known as “IL”. The assembly contains all the IL, metadata, and other files required for a package to run, in one complete package. Each assembly co...

Ngày tải lên: 24/01/2014, 09:20

... Furthermore, there are several advantages to building PHP as a server module, therefore I'll concentrate solely on building PHP both as a static and a dynamic module. As it relates to installa- tion, ... display, and manipulate user input. Chapter 11, “Databases,” highlights PHP s vast support for database servers, focusing on the MySQL database to show how PHP can act...

Ngày tải lên: 27/06/2014, 08:20

... display, and manipulate user input. Chapter 11 , “Databases,” highlights PHP s vast support for database servers, focusing on the MySQL database to show how PHP can act as an efficient inter- face ... want to build PHP as a CGI binary. Furthermore, there are several advantages to building PHP as a server module, therefore I'll concentrate solely on building PHP both a...

Ngày tải lên: 09/08/2014, 12:22

... Global Variables In contrast to local variables, a global variable can be accessed in any part of the program. However, in order to be modified, a global variable must be explicitly declared to ... in which it is declared. PHP variables can be one of four scope types: ã Local variables ã Function parameters ã Global variables ã Static variables Local Variables A variable declared...

Ngày tải lên: 09/08/2014, 12:22

... to N arrays together, appending each to another in the order in which they appear as input parameters. The function’s syntax is: array array_merge (array array1, array array2, . . ., array arrayN) The ... array) array_walk() The array_walk() function provides an easy way to apply a function to several or all elements in an array. Its syntax is: int array_walk(array array, string fu...

Ngày tải lên: 09/08/2014, 12:22

... and instead will just act as the base for a derived class. This kind of class is known as an ab- stract class. An abstract class is useful when a program designer wants to ensure that certain functionality ... 6-5. Chapter 6 132 NOTE Keep in mind that although a class can inherit characteristics from a chain of parents, the parents’ constructors are not called automatically when you...

Ngày tải lên: 09/08/2014, 12:22

... POSIX section. Metacharacters Another cool thing you can do with Perl regexps is use various metacharacters to search for matches. A metacharacter is simply an alphabetical character preceded by a backslash that acts to ... Linking Just as a link can be used to direct a user to an HTML page, it can be used to lead to a PHP- enabled page, as shown here: < ;a href = &q...

Ngày tải lên: 09/08/2014, 12:22

... relational databases. A relational database is essentially a database implementation where all data is organized into related table structures. It is possible to create tables that “relate” to ... can dene the various constructs that the database uses to store the data. ã Data querying: SQL can retrieve data in the database and present it in an easily readable format. ã Data manipu...

Ngày tải lên: 09/08/2014, 12:22

... typical ODBC support in addition to the ability to use these functions to access certain databases that have based their own API on the already existing ODBC API. These database servers are listed ... Functions can be used to interface with the database. This is advantageous in the sense that should you choose to use any other ODBC database (or other database listed above), you alre...

Ngày tải lên: 09/08/2014, 12:22

... for a storage media would be a database, since this also facilitates useful features such as searching and ordering data. I’ll use a MySQL database to store the address information. The table ... stored in a database and is used as the key for retrieving any information stored in the database that is mapped to this UIN. Of course, it is not mandatory that the cookie is used to s...

Ngày tải lên: 09/08/2014, 12:22

... parts of that document should be formatted. For example, you may want a particular word to be boldfaced and another italicized. You may wish to use a particular font for one paragraph and a larger ... 10:25 AM Page 373 function defaultHandler(int parser, string data) { … } The input parameter parser refers to the XML parser handler, and data to the character data that will be h...

Ngày tải lên: 09/08/2014, 12:22

... should appeal to all developers who want to take better advantage of the wireless J2ME platform. J2ME ON SYMBIAN OS 21 1. 4 J2ME on Symbian OS Java on Symbian OS has a long history dating back to Symbian ... PersonalJava (compared to the burgeoning JDK) and used the PersonalJava 1. 1 .1 specification as the basis for the Java implementation. This release,...

Ngày tải lên: 12/08/2014, 23:22