PHP Tutorials

In this article we will introduce the installation and configuration of the Mamp Pro development tools under the Mac system. Introduction to the next MAMP Pro development tool, MAMP Pro is an integrated tool with built-in tools including

In this article we will describe how to install the Wampserver tool under Windows systems. First download VC runtime, can be downloaded on the official website or third party platform. Similarly, download the Wampserver, which can be downloaded

Basic Pattern Matching Everything starts from the most basic. Patterns are the most basic elements of formal expressions, which are a set of characters that describe the character of a string. Patterns can be simple, consist of ordinary strings,

Using a character set, you can immediately give a more powerful regular expression than the exact match feature. A character set can be used to match any character belonging to a particular type; in fact it is a wildcard character. A complete

Random Shuffle and reverse order of PHP arrays In the first two articles, "How to sort php arrays" and "reverse of the PHP array" described in two sets of functions, a set of ascending, a set of reverse (descending), today we introduce this article

This paper introduces the usage and considerations of function fopen (), fclose (): Before working with file content, you usually need to establish a connection to the file resource, which is to open the file. Similarly, when you end the operation

What is a foreach traversal array? When we use foreach to iterate through an array, we often make mistakes due to unclear concepts, and here's a brief look at the commonly used foreach operations. (PHP 4, PHP 5, PHP 7) The foreach syntax structure

What is the broker mode? The mediator pattern is used to develop an object that can transfer or mediate the modification of a collection of these objects in situations where similar objects are not directly connected to each other. When dealing

Web site development has a lot of data need to be regular, easy for administrators to manage, so, in some storage data submission request, the case is required. However, in order to make user input convenient, do not intentionally require the user

The Addslashes () function in PHP is to add a backslash before some of the predefined characters in the input string, but if you find yourself using PHP addslashes function error,Then you need to take a good look at your code. If you don't believe

Use exception mode-pdo::errmode_exception (the error method in the capture SQL statement in PDO three) The exception mode creates a pdoexception and sets the Erorcode property, which encapsulates the execution code into a try{...} Catch{...}

PHP NamespacesOne of the most clear role is to solve the same name problem, PHP does not allow two functions or classes to appear the same names, otherwise it will produce a fatal error. The previous section describes what a PHP namespace is. PHP

In front of you explained the PHP control loop statement, know, when our program block meet certain conditions will not jump out of the loop, and jump out of the loop is to use our break or continue keyword. This chapter will be explained to you

Aliases and Imports can be thought of as a quick way to call namespaces. Allowing the external fully qualified name to be referenced or imported through an alias is an important feature of the namespace. This is somewhat similar to the ability to

What is a variable scope? Variables are used, to conform to the defined rules of the variable. Variables have to be used in a valid range, and if the variable goes beyond a finite range, the variable is meaningless, as if we had 100 dollars, we

PHP Cryptographic function-crypt () function Encryption Before introducing cryptographic functions, let us first introduce the principle of data encryption: that is, the original Ming file or data in accordance with an algorithm for processing,

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

If the cookie is set successfully, the client has a cookie file that holds the user information for the WEB server for a set period. Suppose we use the Windows system at the client to browse the script in the server, and the Cookie file is stored

What is a null value (NULL)? A null value, like its name, indicates that a variable has no value. A null value (NULL) is not case-sensitive, that is, NULL is the same as null or NULL. There are three scenarios in which null values are given in PHP:

PHP is a weakly typed language because when we declare a variable, it is not necessary to indicate the type of data it holds, but although PHP is a weak language, it is sometimes necessary to use a type conversion. The types of PHP allow