PHP Tutorials

In the development and construction of PHP Web site, user registration, login, message and so on is essential to some of the practical functions, the user submitted information data are submitted through form form, but the data submitted will

Forms are a major external form of implementing dynamic Web pages that use forms to collect information submitted by clients. Forms are an important part of website interaction. This section will provide a comprehensive example that will combine

What is a regular expression? Regular expressions, also known as pattern expressions, have a very complete set of syntax systems that can be written in a pattern, providing a flexible and intuitive method of string processing. Regular expressions

What is a Boolean data type? Boolean is one of the PHP4 scalar data types, which is one of the more commonly used data types in PHP and can only hold two values of true and false values. It is case-insensitive, so true is the same as true. If we

When calling a function, it is necessary to pass arguments to the function, the passed arguments become arguments, and the parameters of the function definition are formal arguments. In the previous section, we gave an example of the parameters of a

See this name, is not a very high-level feeling. Yes, the Magic method is really advanced. So, what is a magic method? The method, which begins with two underscores in PHP, is known as the "Magic Method" (Magic methods). such as __construct (),

In the previous we used the Strtotime () function, which realized the function of comparing the size of two time, in addition to comparing the size of two dates, PHP can also accurately calculate the difference of two dates. In this chapter, we

In the development of PHP program, file upload is a very common function, and it is also one of the necessary skills of PHP programmers. Happily, the ability to upload files in PHP is much simpler than in Java, C #, and other languages. Below we

As we have already known, the invocation of the object by means of a reference, the real call is the same object, sometimes need to build a copy of the object, change the original object does not want to affect the copy, in PHP can be based on the

You can use predefined constants in PHP to get information from PHP. The predefined constants commonly used in PHP are as follows: Constant name Description __file__ Default constant, which is the PHP program

Advanced Applications for PHP file processing-File pointers PHP can implement the positioning of the file pointer and query, so as to achieve the required information fast query, the file pointer function has rewind (), fseek (), feof () and Ftell (

1. Session temp File In the server, if you save all users ' sessions to a temporary directory, it can reduce the security and efficiency of the server, and it will be very slow to open the server storage site. On WINDOWS PHP Default session server

When using session technology to track a user in the system, the session is handled by default as a file in the Web server to record the session information for each user and to create a path to the session data file through Session.save_path in php.

In PHP, there are many ways to format strings, which can be formatted according to the format of the formatted numeric characters, and the formatting of numeric characters is most commonly used. Let's take a look at the numeric character Format

What is a PHP pre-defined variable? In PHP programming, often encounter the need to use the address bar information, such as the domain name, access to the URL, url with the parameters of these cases, you can use the predefined variables provided

PHP File Processing-open/close files What is file processing? File processing includes reading, closing, rewriting and so on. Mastering the processing of documents requires readers to clear their mind, master the key steps of file processing and

In PHP, there are many ways to compare strings, the first is to use the strcmp () function and the strcasecmp () function to compare bytes by Byte, and the second is to use the strnatcmp () function to compare the natural sort method, and the third

drawing geometry using the GD2 function (PHP graphic image typical Application tutorial 4) This article mainly explains the use of the GD2 function to achieve the drawing of the geometry, first we need to create an image, in the previous article we

Today, let's explain the error control operator in the PHP operator. First, let's look at what the error control operator does. The error control operator, as the name implies, is used to control the error output, which simply masks the error

Finishing an article about books, after all, to be a programmer, it is necessary to keep the preparation of learning, mainly technical updates too fast, do not learn will be eliminated. So the nonsense is not much to say, the collection of books on