PHP

Use single quotes instead of double quotes to include strings, which is faster. Because PHP will search for variables in strings enclosed by double quotes, but not in single quotes. Note: Only echo can do this. it is a function that can treat

From the perspective of network security, the most common WEB page vulnerabilities are ASP. in this regard, I am an expert and have no right to speak. However, in terms of PHP, from the perspective of network security, ASP is the most common WEB

In Windows, Apache1.3 runs PHP in FastCGI mode. after reading Apache1.3 runs PHP in FastCGI mode, I have been running PHP in ISAPI mode for a long time. The biggest disadvantage of this mode is poor stability, when a PHP error occurs, the Apache

In addition to the GET and POST methods for processing web forms, the PHP program also reads the GET and POST methods for processing web forms, sometimes we need to keep the GET and POST parameters transmitted on the next page or for other purposes!

Talking about PHP + MySQL chat room technology, and reading about PHP + MySQL chat room technology. recently, the topic of PHP chat room technology has been launched in PHPChina. I am working on this project recently, I would like to share my

Vulnerabilities include XSS, SQL injection, command execution, upload vulnerabilities, local inclusion, remote inclusion, permission bypass, information leakage, cookie forgery, and CSRF (cross-site request. These vulnerabilities are not only for

When using PHP to develop applications, especially website programs, you often need to generate random passwords. for example, if you register a user to generate a random password, you also need to generate a random password to reset the password.

You should use the complete result obtained by crypt () as the salt value for password verification to avoid problems caused by different hash algorithms. (As described above, the password hash based on the standard DES algorithm uses a 2-character

Database Connection 10. The biggest feature of PHP is its powerful ability to operate databases. PHP provides support for a variety of databases. With PHP, you can easily connect to the database, request data and display it on your web site, or even

In the PHP development process, if we want to effectively respond to user input, the code needs to be judged. The structure that allows the program to make judgments is called a condition. What are the condition structure statements in PHP? In the

After introducing most phpjpgraph installation and configuration tutorials, we will begin to introduce how to use jpgraph to draw charts, in the previous jpgraph tutorial, I have introduced how to use jpgraph to create a line chart and a column

I believe many of my friends have encountered this problem: when the content of the sent text message is too long, no response will be made. What is the maximum length of text messages allowed? How can we calculate the length of the text? Why does

In development, the program is generally set to debug 2. how to disable debug in a specific action? Q: During development, the program is generally set to debug 2. how can I disable debug in a specific action?A: Configure: write ('debug', 0 );Q: How

PHP development framework YiiFramework tutorial (9) Overview of UI widgets Like the Common Application Development Framework, Yii Framework also provides a set of UI widgets to help programmers design user interfaces. a group is an instance of

Recently, the company encountered a php memory overflow problem when exporting order information. The reason is that the temporary file generated during download is too large to accommodate the PHP memory, when I thought of changing the PHP memory

The following content is intended for developers who use the PHP session_set_save_handler hosting mechanism to manage PHP sessions. The following content is intended for developers who use the PHP session_set_save_handler hosting mechanism to manage

Seven Habits of writing secure PHP applications, seven habits of writing secure PHP applications, including remote security and local security. This article will reveal the habits PHP developers should develop when implementing Web applications with

The alternative usage of the class-data encapsulation, the alternative usage of the reading class-data encapsulation, the alternative usage of the class-data encapsulation in general, if you use classname :: property cannot access the attributes of

PHP array functions are a very powerful set of functions. We can use these functions to sort, delete, and merge arrays. Today, we will introduce to you what role PHP array functions will play in our practical application. Hope to help beginners. If

To obtain the mime type of the file below php5.3.0, the general method is to use the mime_content_type () method, but this method is outdated, so it is best to use fileinfo instead. I am using a windows environment. The following describes the