用php扩展模块APC实现大文件上传
欢迎进入Linux社区论坛,与200万技术人员互动交流 >>进入 一。 APC模块的安装与配置 我的环境是Windows,需要去下载php_apc. dll文件,并把php_apc.dll放到php/ext中,并在php.ini中添加以下语句: extension = php_apc.dll apc.rfc1867 = 1 apc.max_file_siz
欢迎进入Linux社区论坛,与200万技术人员互动交流 >>进入
一。 APC模块的安装与配置
我的环境是Windows,需要去下载php_apc. dll文件,并把php_apc.dll放到php/ext中,并在php.ini中添加以下语句:
extension = php_apc.dll
apc.rfc1867 = 1
apc.max_file_size = 200M
另外,由于需要上传大文件,所以,在php.ini中,以下选项也需要更改:
upload_max_filesize = 1000M
post_max_size = 1000M
max_execution_time = 600 ;每个PHP页面运行的最大时间值(秒),默认30秒
max_input_time = 600 ;每个PHP页面接收数据所需的最大时间,默认60秒
memory_limit = 128M ;每个PHP页面所吃掉的最大内存,默认8M
二。 获取进度条代码
getprogress.php
session_start();
if(isset($_GET['progress_key'])) {
$status = apc_fetch(‘upload_'.$_GET['progress_key']);
if($status['total']!=0 && !emptyempty($status['total'])) {
echo json_encode($status);
}
else {
echo (0);
}
}
?>
session_start();
if(isset($_GET['progress_key'])) {
$status = apc_fetch('upload_'.$_GET['progress_key']);
if($status['total']!=0 && !empty($status['total'])) {
echo json_encode($status);
}
else {
echo (0);
}
}
?>
这里用到了json,传数据非常方便。
$status对象是拥有以下字段的数组:
total: 文件总大小
current: 到目前为止收到的文件数
rate: 上传速度(以字节/秒为单位),不过要在上传完成之后才能有。
filename: 文件名
name: 变量名
temp_filename: PHP 保存文件的临时副本的位置
cancel_upload: 上传已取消(1),还是未取消(0)
done: 上传已完成(1),还是尚未完成(0)
这里,我们用json全部传到页面,方便后面利用。
三。 主文件
upload.php
$id = md5(uniqid(rand(), true));
?>
“width: 500px; height: 20px; border: 1px solid black; display:none;”>
“position: relative; height: 20px; background-color: gray; width: 0%; ”>
[1] [2]

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











JWT is an open standard based on JSON, used to securely transmit information between parties, mainly for identity authentication and information exchange. 1. JWT consists of three parts: Header, Payload and Signature. 2. The working principle of JWT includes three steps: generating JWT, verifying JWT and parsing Payload. 3. When using JWT for authentication in PHP, JWT can be generated and verified, and user role and permission information can be included in advanced usage. 4. Common errors include signature verification failure, token expiration, and payload oversized. Debugging skills include using debugging tools and logging. 5. Performance optimization and best practices include using appropriate signature algorithms, setting validity periods reasonably,

Static binding (static::) implements late static binding (LSB) in PHP, allowing calling classes to be referenced in static contexts rather than defining classes. 1) The parsing process is performed at runtime, 2) Look up the call class in the inheritance relationship, 3) It may bring performance overhead.

What are the magic methods of PHP? PHP's magic methods include: 1.\_\_construct, used to initialize objects; 2.\_\_destruct, used to clean up resources; 3.\_\_call, handle non-existent method calls; 4.\_\_get, implement dynamic attribute access; 5.\_\_set, implement dynamic attribute settings. These methods are automatically called in certain situations, improving code flexibility and efficiency.

PHP and Python each have their own advantages, and choose according to project requirements. 1.PHP is suitable for web development, especially for rapid development and maintenance of websites. 2. Python is suitable for data science, machine learning and artificial intelligence, with concise syntax and suitable for beginners.

PHP is widely used in e-commerce, content management systems and API development. 1) E-commerce: used for shopping cart function and payment processing. 2) Content management system: used for dynamic content generation and user management. 3) API development: used for RESTful API development and API security. Through performance optimization and best practices, the efficiency and maintainability of PHP applications are improved.

PHP is a scripting language widely used on the server side, especially suitable for web development. 1.PHP can embed HTML, process HTTP requests and responses, and supports a variety of databases. 2.PHP is used to generate dynamic web content, process form data, access databases, etc., with strong community support and open source resources. 3. PHP is an interpreted language, and the execution process includes lexical analysis, grammatical analysis, compilation and execution. 4.PHP can be combined with MySQL for advanced applications such as user registration systems. 5. When debugging PHP, you can use functions such as error_reporting() and var_dump(). 6. Optimize PHP code to use caching mechanisms, optimize database queries and use built-in functions. 7

PHP is still dynamic and still occupies an important position in the field of modern programming. 1) PHP's simplicity and powerful community support make it widely used in web development; 2) Its flexibility and stability make it outstanding in handling web forms, database operations and file processing; 3) PHP is constantly evolving and optimizing, suitable for beginners and experienced developers.

In PHP8, match expressions are a new control structure that returns different results based on the value of the expression. 1) It is similar to a switch statement, but returns a value instead of an execution statement block. 2) The match expression is strictly compared (===), which improves security. 3) It avoids possible break omissions in switch statements and enhances the simplicity and readability of the code.
