Table of Contents
linux&php
Home Backend Development PHP Tutorial 2017 Linux summary tutorial_PHP tutorial

2017 Linux summary tutorial_PHP tutorial

Jun 16, 2017 am 09:39 AM
amp linux php

linux&php

1. PHP&MySQL

-----PHP built-in MySQL function learning (3)-----

Preparation

$con=mysqli_connect('localhost','root','','info');
if($con){
echo "Connection successful";
}else{
echo "shit";
}
//mysql_close($con);
if(mysqli_select_db($con, 'info ')){
echo "Database selection successful";
}else{
echo "shit2";
}
/*

----mysql_num_rows()

Get the number of rows in the result set

$query=mysqli_query($con, 'select * from test');//Generate the result set

echo mysqli_num_rows($query ; >

mysqli doesn’t seem to be available, please add some

--- PDO, mysql, mysqli in php

PHP-MySQL is the most original Extension for PHP to operate the MySQL database, PHP-MySQLi The i stands for Improvement, which provides relatively advanced functions. As far as Extension is concerned, it also increases security. PDO (PHP Data Object) provides an Abstraction Layer to operate the database

I can’t tell you the specific difference, just search it and have a look

--- -mysqli_affected_rows($con)

The number of affected rows

is generally used for judgment. For example, when the inserted ones are the same, it is displayed as 0; it feels like mysql feedback

Start the following small practice tomorrow

2. Linux

It is still troublesome to install things in the virtual machine.

xshell is finally done. Sure enough, the centos server interface is not so easy to fix. Fortunately, there are noble people

After entering centos6, enter the user name and password and start to solve network connection problems

Forgot the original URL, write it yourself

---

vim /etc/sysconfig/network-scripts/ifcfg-eth0

Enter i to enter writing Mode

change htcp or something to none, change the onboot item to yes

and then enter IPADDR=192.168.0.10

NETMASK=255.255.255.0

GATEWAY=192.168.0.2

The addresses here are all the addresses of my own network. The query method is win r in the windows interface, enter cmd, enter ipconfig/all

Find the corresponding address. If it is a wireless network, look for the wireless network card. If it is wired, look for the wired one. In short, it must correspond; if the network is changed, the corresponding configuration must also change

If found The address is 192.168.0.1

, then input it in Linux and it will become

192.168.0.a a is not 1, just fine

and the gateway behind it is 192.168.0.b b No Equal to 1, not equal to a

Then return to linux in the virtual machine, press esc, enter: wq, save and exit file writing

Enter service network restart, restart the network service

Then go to the cmd window under Windows just now and enter ping 192.168.0.10 (I set this myself, can you enter your own value?)

If it succeeds, the network connection is OK

As for the settings of xshell, it is very simple

Create a new connection, enter 192.168.0.10 for the location of the host, and then remember to store the user name and password, and just test the connection

I have solved the problem of xshell, so happy! I don’t want to write anything else, let’s play with Linux~~~

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
2 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Repo: How To Revive Teammates
4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: How To Get Giant Seeds
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian Dec 24, 2024 pm 04:42 PM

PHP 8.4 brings several new features, security improvements, and performance improvements with healthy amounts of feature deprecations and removals. This guide explains how to install PHP 8.4 or upgrade to PHP 8.4 on Ubuntu, Debian, or their derivati

deepseek web version entrance deepseek official website entrance deepseek web version entrance deepseek official website entrance Feb 19, 2025 pm 04:54 PM

DeepSeek is a powerful intelligent search and analysis tool that provides two access methods: web version and official website. The web version is convenient and efficient, and can be used without installation; the official website provides comprehensive product information, download resources and support services. Whether individuals or corporate users, they can easily obtain and analyze massive data through DeepSeek to improve work efficiency, assist decision-making and promote innovation.

How to install deepseek How to install deepseek Feb 19, 2025 pm 05:48 PM

There are many ways to install DeepSeek, including: compile from source (for experienced developers) using precompiled packages (for Windows users) using Docker containers (for most convenient, no need to worry about compatibility) No matter which method you choose, Please read the official documents carefully and prepare them fully to avoid unnecessary trouble.

How To Set Up Visual Studio Code (VS Code) for PHP Development How To Set Up Visual Studio Code (VS Code) for PHP Development Dec 20, 2024 am 11:31 AM

Visual Studio Code, also known as VS Code, is a free source code editor — or integrated development environment (IDE) — available for all major operating systems. With a large collection of extensions for many programming languages, VS Code can be c

How do you parse and process HTML/XML in PHP? How do you parse and process HTML/XML in PHP? Feb 07, 2025 am 11:57 AM

This tutorial demonstrates how to efficiently process XML documents using PHP. XML (eXtensible Markup Language) is a versatile text-based markup language designed for both human readability and machine parsing. It's commonly used for data storage an

PHP Program to Count Vowels in a String PHP Program to Count Vowels in a String Feb 07, 2025 pm 12:12 PM

A string is a sequence of characters, including letters, numbers, and symbols. This tutorial will learn how to calculate the number of vowels in a given string in PHP using different methods. The vowels in English are a, e, i, o, u, and they can be uppercase or lowercase. What is a vowel? Vowels are alphabetic characters that represent a specific pronunciation. There are five vowels in English, including uppercase and lowercase: a, e, i, o, u Example 1 Input: String = "Tutorialspoint" Output: 6 explain The vowels in the string "Tutorialspoint" are u, o, i, a, o, i. There are 6 yuan in total

BITGet official website installation (2025 beginner's guide) BITGet official website installation (2025 beginner's guide) Feb 21, 2025 pm 08:42 PM

BITGet is a cryptocurrency exchange that provides a variety of trading services including spot trading, contract trading and derivatives. Founded in 2018, the exchange is headquartered in Singapore and is committed to providing users with a safe and reliable trading platform. BITGet offers a variety of trading pairs, including BTC/USDT, ETH/USDT and XRP/USDT. Additionally, the exchange has a reputation for security and liquidity and offers a variety of features such as premium order types, leveraged trading and 24/7 customer support.

Ouyi okx installation package is directly included Ouyi okx installation package is directly included Feb 21, 2025 pm 08:00 PM

Ouyi OKX, the world's leading digital asset exchange, has now launched an official installation package to provide a safe and convenient trading experience. The OKX installation package of Ouyi does not need to be accessed through a browser. It can directly install independent applications on the device, creating a stable and efficient trading platform for users. The installation process is simple and easy to understand. Users only need to download the latest version of the installation package and follow the prompts to complete the installation step by step.

See all articles