PHP

Many design patterns encourage loose coupling in the design patterns book. To understand this concept, we 'd better talk about the hard work of many developers engaged in large-scale systems. A problem occurs when you change a code snippet. other

When accessing the member variables or methods in the PHP class, if the referenced variables or methods are declared as const (defining constants) or static (declaring static), the operator must be used:: if the referenced variable or method is not

The overall revision and upgrade of the website, because you want to reduce the website operation cost and consider changing the database, from the original enterprise-level database ORACLE to a relatively small MYSQL, an important process in

According to continuous feedback in the production environment, php websites are found to be infected with Trojans, most of which are caused by improper permission settings. It is inevitable that vulnerabilities exist in server software or php

This series of tutorials uses the mom assistant on the public platform (account mmhelper: send the food name or the first letter of the alphabet to query which foods can be eaten by pregnant women, confinement, and babies. Send your own location to

Application of pseudo-static solution in phpWind What is the use of pseudo-static data? The most important thing is to cater to the search engine's convenience for search engine Spider to capture the relevant content on the webpage! It is convenient

4, in the jpgraph installation root directory has a jpg-config.inc.php (jpgraph configuration file), set the correct TTF font 5, check the PHP configuration file php. whether the execution time and memory in ini are sufficient. generally, 32 M is

The path constants of the system and project are used in the system's default directory specification. you can change them by redefinition. if you do not want to customize directories, these constants do not need to be changed. Predefined Constants

Webshell, such as eval ($ _ POST []), is familiar to everyone. in recent years, many variants have been derived based on common webshells, increasing the difficulty of detection. let's take a look at several samples extracted from the internet first

You no longer have to worry about configuring php on IIS. Microsoft just released IIS-oriented PHP manager version 1.0, which can be used on both x86 and x64 systems. the usage is as follows: You no longer have to worry about configuring php on IIS.

When PHP outputs a two-dimensional array today, & amp; ldquo; Fatalerror: CannotuseobjectoftypestdClassasarrayin & amp; hellip; & amp; rdquo; is displayed ;. Today, when PHP outputs a two-dimensional array, "Fatal error: Cannot use object of type

The PHP collection of a single file saves the collected id data to a txt file, and runs the php file to automatically run the collection, mainly to understand a collection principle of PHP, it is not suitable for direct website application. this

The GD Library is an extension library for php image processing. the GD Library provides a series of APIs for image processing. you can use the GD library to process images or generate images, the GD Library on websites is usually used to generate

Php code for generating gif dynamic images from multiple jpg images /*Image merging needs1 download php_imagick_st-Q8.dllAnd put it in php/ext/2 Add in php. iniExtension = php_imagick_st-Q8.dllRestart apache (web server)3. access phpinfo*/ /*Image

The following changes will occur to the public platform due to interface upgrade. When a new user subscribes, the previous "Hello2BizUser" text will be pushed and changed to a "subscribe" event. Recently, I met several friends who asked new users

Recently, in the mysql database used by the project team, garbled data is inserted. we have summarized this issue. let's start from the basic point, to the deep-seated causes and solutions of errors. Recently, in the mysql database used by the

Recordlock: Record lock, that is, only a single row of gap lock is locked. Only one interval is locked. (note that the interval here is an open interval, that is, the boundary value is not included. Next-keylock: recordlock + gaplock, so

PHP access database tutorial Conn. php: 12345 Open ($ connstr);?> Index. php: 1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950      Connect to the ACCESS database

FunctionarrayToJson ($ array) {arrayForRecursive ($ array, 'urlencode', true); $ json = json_encode ($ array); $ json = urldecode ($ json ); return $ json ;} Function arrayToJson ($ array) {arrayForRecursive ($ array, 'urlencode', true); $ json =

The biggest advantage of using PHP programming is that it is very easy to learn this programming language and its rich library. Even if we don't know much about the functions we need, we can guess how to complete a specific task. The biggest