nginx - php basic issues. .
Files of a certain project
<code><?php /** * 基础类 */ abstract class Ctrl_Base extends Yaf_Controller_Abstract{ /** * 开启 SESSION : 1 * 必须登录 : 2 * 必须管理员 : 4 */ protected $_auth = 0; /** * 当前登录用户 * @var array */ public $mCurUser = array(); public $l; public $lang; /** * 构造函数 */ public function init(){ $tSqlite = $this->sqlite(); $tLCount = $tSqlite->getRow("SELECT COUNT(0) c FROM sqlite_master where type='table' and name='lang'"); $tLang = array(); if(!empty($tLCount['c'])){$tLang = $tSqlite->getRow($tSql = 'select * from lang');} $tLang = empty($tLang['lang'])?'cn':$tLang['lang']; include realpath(dirname(__FILE__).'../../../lang/'.$tLang.'/common.php'); $lang = json_encode($lang); $lang = json_decode($lang); $this->assign('lang' , $lang); $this->assign('l' , $tLang); $this->l = $tLang; $this->lang = $lang; //(1 & $this->_auth) && $this->_session(); //(1 < $this->_auth) && $this->_role(); $tSqlite->close(); }</code>
Question 1:
<code> $lang = json_encode($lang); $lang = json_decode($lang);</code>
What do these two sentences mean here? , why should $lang be converted into json format and then parsed into php variables? Isn't this unnecessary?
Question 2:
<code> $this->assign('lang' , $lang); $this->assign('l' , $tLang); $this->l = $tLang; $this->lang = $lang;</code>
How do you understand these four sentences?
My understanding is that the first parameter of assign is the variable name, followed by its variable value, but
<code>`$this->l = $tLang;`不就是将`$tLang`赋值给`$this`的`l`属性么?这四句不就重复了么?</code>
Reply content:
Files of a certain project
<code><?php /** * 基础类 */ abstract class Ctrl_Base extends Yaf_Controller_Abstract{ /** * 开启 SESSION : 1 * 必须登录 : 2 * 必须管理员 : 4 */ protected $_auth = 0; /** * 当前登录用户 * @var array */ public $mCurUser = array(); public $l; public $lang; /** * 构造函数 */ public function init(){ $tSqlite = $this->sqlite(); $tLCount = $tSqlite->getRow("SELECT COUNT(0) c FROM sqlite_master where type='table' and name='lang'"); $tLang = array(); if(!empty($tLCount['c'])){$tLang = $tSqlite->getRow($tSql = 'select * from lang');} $tLang = empty($tLang['lang'])?'cn':$tLang['lang']; include realpath(dirname(__FILE__).'../../../lang/'.$tLang.'/common.php'); $lang = json_encode($lang); $lang = json_decode($lang); $this->assign('lang' , $lang); $this->assign('l' , $tLang); $this->l = $tLang; $this->lang = $lang; //(1 & $this->_auth) && $this->_session(); //(1 < $this->_auth) && $this->_role(); $tSqlite->close(); }</code>
Question 1:
<code> $lang = json_encode($lang); $lang = json_decode($lang);</code>
What do these two sentences mean here? , why should $lang be converted into json format and then parsed into php variables? Isn't this unnecessary?
Question 2:
<code> $this->assign('lang' , $lang); $this->assign('l' , $tLang); $this->l = $tLang; $this->lang = $lang;</code>
How do you understand these four sentences?
My understanding is that the first parameter of assign is the variable name, followed by its variable value, but
<code>`$this->l = $tLang;`不就是将`$tLang`赋值给`$this`的`l`属性么?这四句不就重复了么?</code>
Let’s not talk about how the code is written...
The first problem is to convert the array into an object.
Second question, assign is a registered template variable, which can be used directly in the view$lang
. So it is different
Question 1: I don’t know where the variable $lang
comes from. . . . However, this kind of json_encode()
, json_decode()
can be used for data type conversion. If $lang
is an array initially, it will be converted to object after executing these two sentences.
Question 2: I’m not very clear either. .
Question 1: Convert $lang variable into object. $lang is mostly introduced by include. In the template engine, the format of arrays and objects are different. Maybe the author found it easy to use, so he transferred it.
Question 2: Pass $lang and $tLang to the page to facilitate page calls. The use of $this->l and $this->lang is to save them in the current class for easy calling by itself or outside. And every time we create a new class, the class will pass two variables to the page and assign the variable values to the properties of the current class.

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics



PHP is used to build dynamic websites, and its core functions include: 1. Generate dynamic content and generate web pages in real time by connecting with the database; 2. Process user interaction and form submissions, verify inputs and respond to operations; 3. Manage sessions and user authentication to provide a personalized experience; 4. Optimize performance and follow best practices to improve website efficiency and security.

PHP and Python have their own advantages and disadvantages, and the choice depends on project needs and personal preferences. 1.PHP is suitable for rapid development and maintenance of large-scale web applications. 2. Python dominates the field of data science and machine learning.

How to configure an Nginx domain name on a cloud server: Create an A record pointing to the public IP address of the cloud server. Add virtual host blocks in the Nginx configuration file, specifying the listening port, domain name, and website root directory. Restart Nginx to apply the changes. Access the domain name test configuration. Other notes: Install the SSL certificate to enable HTTPS, ensure that the firewall allows port 80 traffic, and wait for DNS resolution to take effect.

PHP uses MySQLi and PDO extensions to interact in database operations and server-side logic processing, and processes server-side logic through functions such as session management. 1) Use MySQLi or PDO to connect to the database and execute SQL queries. 2) Handle HTTP requests and user status through session management and other functions. 3) Use transactions to ensure the atomicity of database operations. 4) Prevent SQL injection, use exception handling and closing connections for debugging. 5) Optimize performance through indexing and cache, write highly readable code and perform error handling.

Starting an Nginx server requires different steps according to different operating systems: Linux/Unix system: Install the Nginx package (for example, using apt-get or yum). Use systemctl to start an Nginx service (for example, sudo systemctl start nginx). Windows system: Download and install Windows binary files. Start Nginx using the nginx.exe executable (for example, nginx.exe -c conf\nginx.conf). No matter which operating system you use, you can access the server IP

PHP is a server-side scripting language used for dynamic web development and server-side applications. 1.PHP is an interpreted language that does not require compilation and is suitable for rapid development. 2. PHP code is embedded in HTML, making it easy to develop web pages. 3. PHP processes server-side logic, generates HTML output, and supports user interaction and data processing. 4. PHP can interact with the database, process form submission, and execute server-side tasks.

The methods that can query the Nginx version are: use the nginx -v command; view the version directive in the nginx.conf file; open the Nginx error page and view the page title.

PHP is suitable for web development and content management systems, and Python is suitable for data science, machine learning and automation scripts. 1.PHP performs well in building fast and scalable websites and applications and is commonly used in CMS such as WordPress. 2. Python has performed outstandingly in the fields of data science and machine learning, with rich libraries such as NumPy and TensorFlow.
