PHP

PHP performance optimization skills, read PHP performance optimization skills, about require, include performance test data: there is an array, a total of 30 thousand pieces of data, 1 MB size, I divided the data into two ways to test //

Efficiency comparison between the two include file loading methods in php To continue to improve the core part of the "X Plan", we need to load necessary files and try two methods to find that the efficiency is different ~Let's talk about two

We all know that one of the advantages of PHP is that it is fast, which is enough for general website applications. However, if the site's traffic is high, bandwidth is narrow, or other factors cause a performance bottleneck on the server, you may

Beijing time is East 8, which may be due to time zone issues. but it was okay before. after google found that php started from php5.1.0. date is added to ini. the timezone option is disabled by default when the Beijing time is East 8, which may be

$ _ SERVER ['server _ SIGNATURE '] # a string containing the SERVER version and virtual host name. $ _ SERVER ['path _ TRANSLATED '] # Basic PATH of the file system where the current script is located (not the root directory of the document. $ _

Numeric functions, other rand, floor, ceil, round, $ REMOTE_ADDR numeric functions Srand Random number initialization Rand Random number generation Floor Integer truncation Ceil Function rounded up to

In terms of structure, there are strict differences between uppercase letters of C, C ++, JAVA, and Perl and lowercase letters. For example, $ I and $ I are two different variables. Basic items In terms of structure, there are strict differences

In some applications, some strings are often matched (searched) according to certain rules. for example, the user is required to enter a QQ number with at least five digits. The tool used to describe these rules is a regular expression. Introduction

New features of MySQL5.6: online DDL/changes. before MySQL 5.6, whether it is MyISAM or InnoDB engine, the database will always block the DML of the database when executing DDL operations, especially when the data volume in the table is large, the

Introduction: This class function allows you to obtain information about classes and object instances. You can obtain the name of the class to which the object belongs, as well as its member attributes and methods. By using these functions, you can

Interview questions for php development engineers 1. get a letter combinationQuestion requirements:Make a combination of three letters, such as "abd, ade, acc, aef" and so on:Target1. all letters must be printed2. the combination of letters should

The log storage location and file name can be modified through configuration. Generally, you can use the default value. similar to log4X, application logs can be written to multiple destinations at the same time through routing (files, for more

CodeIgniter form verification To use CodeIgniter form verification, add:? 12345678910111213141516171819202122232425262728293031323334353637383940414243444546 $ This-> load-> helper ('form'); $ this-> load-> library ('form _ validation ');

Data paging is a common feature in Web development. ThinkPHP has a built-in paging class (Lib/ORG/Util/Page. class. php in the ThinkPHP system directory), which can be directly used. ThinkPHP paging class Data paging is a common feature in Web

PHP executes system commands exec, system, passthru, popen PHP provides three built-in functions exec, system, and passthru to execute system commands.1. execExec (string $ command [, array $ out_put] [, $ ret_val]);The first parameter is the

Php5 magic functions and magic constants Magic functions 1. _ Construct ()Called When instantiating an object,When _ construct and a function with the class name both exist, __construct will be called and the other will not be called. 2. _ Destruct (

Although there are many separate file uploads and CForm (formbuilder) documents, there is no combination of the two examples. Although there are many separate file uploads and CForm (form builder) documents, there is no combination of the two

In order for your route to process different types of files, you need to add a line in your route configuration file: connect function definition Connect ($ route, $ default = array (), $ params = array ()) Returns this object's routes array.

The naming range function provides a series of (consistent operation) encapsulation for model operations, allowing you to conveniently query and operate data. Let's take a look at this usage. The naming range function provides a series of

This article describes how to implant client scripts to PHP websites. The client script embedding attack refers to inserting executable scripts into objects such as forms, images, animations, or hyperlink text. When the user opens these objects, the