PHP

Introduction to Knowledge points:1. Determine whether a file or directory exists in bool Copy Code code as follows: File_exists (string filename) 2. Get filename Copy Code code as follows: BaseName (filepath)

This article describes the substr () function parameter description and usage in PHP. Share to everyone for your reference. Specifically as follows: String substr (string $string, int $start [, int $length]), which can be used to find a matching

PHP built-in variable: directory_separatorDirectory_separator is a PHP built-in command that returns the path separator associated with the operating system, returns on Windows, and backs up on Linux or Unix-like, that's the difference. It is

The example of this article is about the solution of using get to obtain URL character garbled in PHP. Share to everyone for your reference. The specific methods are as follows: First, the question: I was going to use this. Copy Code code as

This article summarizes the PHP one-dimensional two-dimensional array key sorting method. Share to everyone for your reference. The specific methods are as follows: Array ordering in PHP has always been a cliché question, let's focus on the

In the development of PHP system, the member is often an essential module, and password processing has to face the problem, PHP Mcrypt Encryption Library needs additional settings, many people are directly using MD5 () function encryption, this

This article illustrates the use of Simplexml_load_file functions in PHP. Share to everyone for your reference. The specific usage analysis is as follows: After the simplexml_load_file () function in PHP loads an XML document into an object, we can

One, reference returnReference return is used when you want to use a function to find the reference to which variable it should be bound. Do not use return references to increase performance, the engine is smart enough to optimize itself. Return the

b/S: Web programs based on browser and server architecture C/S: QQ SVN client + server simple text-based protocols: Redis Memcache difference: are stored in the data, memcache directly saved to memory, Redis saved to memory, after the shutdown

This article describes the FTP function Ftp_connect, ftp_login and Ftp_chmod usage in PHP. Share to everyone for your reference. The specific methods are as follows: The Ftp_connect () function establishes a new FTP connection and, if successful,

This article details the usage of socket in PHP and share it for everyone's reference. The specific usage is as follows: First, open the socket Phpinfo () to see if the socket extension is turned on or open in php.ini. Second, the server-side

This article describes the PHP character comparison function similar_text, strnatcmp and strcasecmp usage. Share to everyone for your reference. Specifically as follows: The ①similar_text () function calculates the number of matching characters for

Agent mode (proxy), which is an enhancement to a simple handler (or pointer), used to refer to an object: this pointer is replaced by a proxy object, the proxy object is between the client and the real execution program, and the pointer has a hook

First talk about parent and self: Copy Code code as follows: /* * Created by Yinyiniao */ Class a{ function __construct () { The method of constructing the echo "base Class A" "; } } Class B extends a{ function __construct () {

This article describes the PHP to get the current page URL function example, share for everyone to reference. The implementation methods are as follows: In PHP, there is no default function to get the URL of the current page, so today we're going

The example of this article summarizes the usage of several predefined variables $_server in PHP. Share to everyone for your reference. Specifically as follows: Copy Code code as follows: Echo ' DocumentRoot: '. $_server[' document_root '.

This article analyzes the usage of rename () function in PHP. Share to everyone for your reference. Specifically as follows: PHP filesystem function, rename () function renames a file or directory, and if successful, the function returns True.

Although PHP was developed in C language, I am puzzled that PHP does not provide direct support for the struct of the struct body.However, PHP provides the pack and unpack functions for binary (binary data) and PHP internal data interchange:

This example describes a workaround for PHP using the ziparchive hint fatal error:class ziparchive not found in. Share to everyone for your reference. Specifically as follows: Ziparchive is a compression and decompression function that comes with

Buffer Buffer is a memory address space, the Linux system default size is generally 4096 (4KB), that is, a memory page. It is primarily used for data transfer between devices that are not synchronized at the storage speed or between devices with