


yii implements the method of uploading files using CUploadedFile, yiicuploadedfile_PHP tutorial
yii implements the method of uploading files using CUploadedFile, yiicuploadedfile
This article describes the example of yii implementing the method of using CUploadedFile to upload files. Share it with everyone for your reference, the details are as follows:
1. Front-end code
Html code:
<form action="<?php echo $this->createUrl('/upload/default/upload/');?>" method="post" enctype="multipart/form-data"> <input type="file" name="file"/> <input type="hidden" name="dir" value="<?php echo Yii::app()->controller->currentDir?>"/> <input type="submit" value="Upload Image"/> </form>
2. Backend code
Php code:
public function actionUpload() { $this->currentDir = isset($_REQUEST['dir']) ? $_REQUEST['dir'] : ''; $image = CUploadedFile::getInstanceByName('file'); $name = $this->uploadPath.'/'.$this->currentDir.'/'.$image->name; $image->saveAs($name); $this->redirect(array('index','dir'=>$this->currentDir)); }
About the use of CUploadedFile class:
Copy the code via The code is as follows: CUploadedFile::getInstance($model,'album_image');
Or Copy the code The code is as follows: $attach = CUploadedFile::getInstanceByName($inputFileName);
The obtained object $attach object has the following attributes:
name
size
type
tempName
error
extensionName
hasError
I hope this article will be helpful to everyone’s PHP program design based on the Yii framework.
Articles you may be interested in:
- Yii framework login process analysis
- How to implement batch deletion of CGridView in Yii
- Yii based on arrays and objects Detailed explanation of model query skills examples
- Yii permission control methods (three methods)
- Yii uses the activeFileField control to implement the method of uploading files and pictures
- Model in Yii Creation and usage methods
- Yii database query method
- A new method of handling front and backend logins in Yii

TomodifydatainaPHPsession,startthesessionwithsession_start(),thenuse$_SESSIONtoset,modify,orremovevariables.1)Startthesession.2)Setormodifysessionvariablesusing$_SESSION.3)Removevariableswithunset().4)Clearallvariableswithsession_unset().5)Destroythe

Arrays can be stored in PHP sessions. 1. Start the session and use session_start(). 2. Create an array and store it in $_SESSION. 3. Retrieve the array through $_SESSION. 4. Optimize session data to improve performance.

PHP session garbage collection is triggered through a probability mechanism to clean up expired session data. 1) Set the trigger probability and session life cycle in the configuration file; 2) You can use cron tasks to optimize high-load applications; 3) You need to balance the garbage collection frequency and performance to avoid data loss.

Tracking user session activities in PHP is implemented through session management. 1) Use session_start() to start the session. 2) Store and access data through the $_SESSION array. 3) Call session_destroy() to end the session. Session tracking is used for user behavior analysis, security monitoring, and performance optimization.

Using databases to store PHP session data can improve performance and scalability. 1) Configure MySQL to store session data: Set up the session processor in php.ini or PHP code. 2) Implement custom session processor: define open, close, read, write and other functions to interact with the database. 3) Optimization and best practices: Use indexing, caching, data compression and distributed storage to improve performance.

PHPsessionstrackuserdataacrossmultiplepagerequestsusingauniqueIDstoredinacookie.Here'showtomanagethemeffectively:1)Startasessionwithsession_start()andstoredatain$_SESSION.2)RegeneratethesessionIDafterloginwithsession_regenerate_id(true)topreventsessi

In PHP, iterating through session data can be achieved through the following steps: 1. Start the session using session_start(). 2. Iterate through foreach loop through all key-value pairs in the $_SESSION array. 3. When processing complex data structures, use is_array() or is_object() functions and use print_r() to output detailed information. 4. When optimizing traversal, paging can be used to avoid processing large amounts of data at one time. This will help you manage and use PHP session data more efficiently in your actual project.

The session realizes user authentication through the server-side state management mechanism. 1) Session creation and generation of unique IDs, 2) IDs are passed through cookies, 3) Server stores and accesses session data through IDs, 4) User authentication and status management are realized, improving application security and user experience.


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

PhpStorm Mac version
The latest (2018.2.1) professional PHP integrated development tool

MinGW - Minimalist GNU for Windows
This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.

EditPlus Chinese cracked version
Small size, syntax highlighting, does not support code prompt function

DVWA
Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software

ZendStudio 13.5.1 Mac
Powerful PHP integrated development environment
