PHP Tutorials

The problem is with direct sorting, which is ordered in the order of string dictionaries. What's the problem? is because the number of bits in each address segment is incorrect. The following is an introduction to sorting IP with regular expressions.

Sometimes when we do the development of the program, want to know how long the user in the Site page browsing, then how to achieve this function? This article mainly introduces the PHP record page dwell time method, involving PHP with JS for file

CI Framework, full name CodeIgniter, I believe everyone is not unfamiliar, she is a small PHP framework, CI China official website document is also very comprehensive, now ci4.0 also came out, joined the namespace. But I personally prefer the 2.0

The main navigation site is located on the top of the site, usually the primary navigation of the site mainly includes the homepage and product columns and individual pages of the import link. User-friendly to the fastest, easiest to reach different

How PHP reads and writes files PHP read and write files, just like ASP in the use of FSO for file read and write operations. Of course, in ASP, FSO only reads and writes to files on the server disk where the current program is running (it is clear

What is polymorphism? Polymorphism is the third feature of object-oriented language following the abstraction and inheritance of data. Literally, polymorphism means "multiple forms", and in simple terms, polymorphism is a feature that has the

e-mail, like a regular email-like, also requires an address, which differs from regular mail in that it is an electronic address. All users who have mailboxes on the Internet have one or several email addresses, and these email addresses are unique.

This article mainly introduces the PHP screen filter to specify the method of the keyword, including the string filter processing and array traversal techniques, very practical value, the need for friends can refer to the next The example in this

AJAX is a technique for exchanging data with a server that can update a part of a Web page without re-loading the entire page. This article focuses on the use of AJAX-related knowledge. Ajax as asynchronous transmission, local refresh is very

Recursion is an important programming technique. This method allows a function to invoke itself from within. An example is calculating the factorial. The factorial of 0 is specifically defined as 1. The factorial of a larger number is calculated by

Ucenter is used to achieve multi-project synchronization landing, I believe that the people who have learned PHP have heard of this open source project, you may think it can only be used in Discuz, It can be put into any project, Ucenter

Regular expressions are generic, and all languages are common, and are essential in all languages. Believe that a lot of the program apes in the beginning to learn the regular expression of the time will encounter such problems, see a bunch of messy

When PHP accepts information submitted through an HTML form, it saves the submitted data in a global array, and we can call the system-specific array of automatic global variables to get those values. The usual automatic global variables are as

PHP is a weak type, which is characterized by the need not to specify a type for the variable, but also to store any type thereafter, but in PHP's new syntax, in some specific cases, for certain types, syntax constraints are also available.

Directory_separator is a command that displays the system delimiter, Directory_separator is the internal constant of PHP and is not required to be used for any definition or inclusion. As we all know, under the Windows path separator is (of course,

Applet is an application that does not need to be downloaded and installed, it implements the dream of "at your fingertips" and opens the app with the user sweeping or searching. Also embodies the "run-to-go" concept, users do not care whether to

This article mainly introduces the use of PHP reflection mechanism, is a more important concept in PHP programming, the need for friends can refer to the following In this paper, the use of the reflection mechanism of PHP is described and shared

In SQL query should write the query statement, not all queries to the program processing, so that the speed of query and processing is slow, and another is to read and return the LV-level key array of data 1. At the time of registration, after

The PHP Data Object (PDO) extension defines a lightweight, consistent interface for the PHP Access database. PDO provides a data access abstraction layer, which means that the same functions (methods) can be used to query and fetch data regardless

AJAX is a technique for exchanging data with a server that can update a part of a Web page without re-loading the entire page. This article mainly introduces the non-refresh page code of PHP implemented by using AJAX. 0)? " Home \n Prev \n": "