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Constructor and destructor

If you declare a function in a class, named __construct, this function will be treated as a constructor and executed when creating an object instance. To be clear, __ is two underscores. Just like any other function Likewise, constructors may have parameters or default values.

Dec 14, 2016 am 11:10 AM

Introduction to commonly used MySQL command line tools

We often use MySQL command line tools. There are some MySQL command line tools that can be used interactively. Each command accepts some options. The long form of the options is prefixed with two hyphens (-).

Dec 14, 2016 am 11:09 AM

mysql command

PHP image functions

There is a set of image functions in PHP that can dynamically generate image data streams in gif format and output them to the server. In order for this set of functions to work, the system must have the support of the gd library.

Dec 14, 2016 am 11:07 AM

A complete list of commonly used MySQL commands

The following are MySQL commands that we often use and are very useful. Below you see #, which means executing the command under the Unix command line, and mysql>, which means you are currently logged in to the MySQL server, and the mysql command is executed on the mysql client. Log in to MySQL. If you want to connect to a remote database, you need to specify the hostname with -h.

Dec 14, 2016 am 11:07 AM

mysql command

Variables of variables, PHP and you

About using variables in PHP. In my program, I need to update multiple records on one page at the same time. After a long period of painful thinking, the concept of variable variable accidentally flashed in my mind.

Dec 14, 2016 am 11:05 AM

How to enter the MySQL command line under Linux

This article introduces: How to enter the MySQL command line under Linux. You can refer to it if necessary.

Dec 14, 2016 am 11:03 AM

Summary of common commands for mysql database under CentOS

Summary of mysql database usage This article mainly records some daily commands of mysql for future query.

Dec 14, 2016 am 11:00 AM

mysql command

MySQL command line formatted output

MySQL's client command line tool has many user-friendly features, and in some aspects it can even be said to be more user-friendly than Oracle's sqlplus. Of course, overall, sqlplus is more convenient. Maybe it's because I am more familiar with sqlplus. Here are some commonly used features of the MySQL command line.

Dec 14, 2016 am 10:59 AM

mysql command

MySQL command line

I introduce MySQL commands, you can refer to them if you need them.

Dec 14, 2016 am 10:55 AM

Two methods for MySQL command to execute sql files

Friends who have studied SQL Server or Oracle will know that a sql script is a collection of sql statements containing one or more sql commands. We can put these sql scripts in a text file (we call it a "sql script file"), and then Execute this sql script file through relevant commands. The basic steps are as follows:

Dec 14, 2016 am 10:53 AM

mysql command

Common commands to operate MySQL under cmd command line

First, let’s talk about why we need to operate MySQL under DOS: SQL has been around since the 19th century. At that time, due to hardware constraints, we could only use a DOS-style interface. Later, although the hardware supported a graphical interface (common software operation interface), the command The line interface (that is, the DOS interface) is retained for its simplicity, efficiency, and convenience. This is the reason for using the DOS interface.

Dec 14, 2016 am 10:50 AM

mysql command

Analysis of namespace and use usage in php

This article mainly introduces the usage of namespace and use in PHP, and analyzes the functions and specific usage methods of namespace and use in PHP with examples. Friends in need can refer to it.

Dec 14, 2016 am 10:47 AM

[MySQL] Command line tools and basic operations

MySQL is a simple SQL shell (with GNU readline functionality). It supports both interactive and non-interactive use. When used interactively, query results are in ASCII table format. When in non-interactive (for example, used as a filter) mode, the result is in tab-delimited format. The output format can be changed using command line options. If you encounter problems due to insufficient memory due to large results, use the --quick option. This forces MySQL to search results from the server one row at a time, rather than retrieving the entire result set and having to save it to memory before displaying it. (MySQLD)

Dec 14, 2016 am 10:46 AM

mysql command

Detailed explanation of php rsa encryption, decryption, signature, and signature verification

This article mainly introduces relevant information on PHP RSA encryption, decryption, signature, and signature verification. Friends who need it can refer to it.

Dec 14, 2016 am 10:44 AM