PHP Tutorials

Htmlspecialchars, Strip_tags, addslashes functions are the most common in the development of web-based programs, and this article will introduce these three functions separately. 1.strip_tags () function The Strip_tags () function strips HTML, XML,

This article mainly introduces the use of the Len () function in Python, including the use of small examples in four cases, is the basic knowledge of Python learning, the need for friends can refer to the following function: Len () 1: function:

Called callback function, which means that the calling function is not passing a standard variable as a parameter, but instead passes another function as an argument to the called function. If it appears in the format description of the

PHP fflush function fflush (PHP 4 “ = 4.0.1, PHP 5) fflush-Flush output to a file description Boolean Fflush (resource $ processing) This feature forces the file handle that the force writes to all buffered outputs that the resource points to.

Instance of a file handle: Locating the starting position of the unread read through the handle and chunking the large file in order to use the Read file function, you need to use the path relative to the PHP script to indicate to them the file to

Redis is a memory-based key (key) value (value) type of data structure storage container that can either work completely in memory or persist in storage. When Redis is working in persistent mode, it can be used as a non-relational database. In the

This article mainly introduces the Hibernate mapping basic class mapping and object relational mapping, very practical value, the need for friends can refer to some of us in the absence of learning ssh, when we set up the database table, the first

How do I create a compressed RAR file in PHP? In the Web site, most of the uploaded files are in the form of compressed package, so we first have to upload the files before we can upload, then how do we implement the Web site to upload files

In the forum to read a lot of posts, but found that some people are not very likely to use. Think that the description is not detailed enough to achieve! I'll talk to you again. First, you create a new rss.php file and copy the following code into

How does the PHP array merge? First, let's introduce what is Array_merge (): It is a combination of an array unit or multiple array units, a value in an array that is appended to the previous array, and returns an array as the result. In the

In PHP development, we often judge the size of two times, but in PHP, two times is not directly comparable, because the time is composed of years, months, days, hours, minutes, seconds, so if you need to two time into Line comparison, the first

ChDir: Change directory. Dir: Catalog Category class. Closedir: Close directory handle. Opendir: Open Directory handle. Readdir: Read directory handle. Rewinddir: Resets the directory handle. ChDir change the directory. Syntax: int chdir (string

A transaction (Transaction) is an important feature in the operational database that allows you to book a single, or a series of SQL statements, and then execute them together, and, in the course of execution, you can roll back all the changed

Fetchall () method of obtaining result set in PDO The Fetchall () method is to get all the rows in the result set, returning a binary array containing all the rows in the result set! So in the previous article "fetching the result set in PDO" in

What is a PHP array? An array is a set of data that organizes a series of data to form an operational whole. Arrays in PHP are more complex, but more flexible than arrays in many other high-level languages. An array of arrays is an ordered set of

three ways to execute SQL statements in PDO In PDO, we can execute SQL statements in three ways, namely the Exec () method, the Query method, and the preprocessing statement prepare () and Execute () methods ~ In the previous article, "Using PDO

How do I store configuration information in the INI file? Some of the information that is reused in the site (such as passwords, paths, and variables) is best stored in a file so that if you need to move the code to another site, you only need to

What is a variable? A variable refers to the amount of value that can change during the execution of a program, as opposed to the constant we are talking about, and the constant is defined so that it cannot be changed in the program. The variables

What is an object? Objects are data types that store data and information about how to work with the data. is an entity used to describe objective things in the system, which is a basic unit of the system. An object consists of a set of properties

Normal string: Original string: 1,2,3,4,5,6, This string: 1,2,3,4,5,6, toward the last character of the Lost "," Remove the last character "," and the end result is 1,2,3,4,5,6 $str = "1,2,3,4,5,6,"; $newstr = substr ($str, 0,strlen ($STR)-1);