基于thinkphp的uploadify上传图功能
php Action 服务器端
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
/**
* Description of UploadAction
*
* @author hxwj
*/
class UploadAction extends CommonAction{
public function _initialize(){
//此处为解决Uploadify在火狐下出现http 302错误 重新设置SESSION
$session_name = session_name();
if (isset($_POST[$session_name])) {
session_id($_POST[$session_name]);
session_start();
}
}
public function upload(){
import("ORG.Net.UploadFile");
//导入上传类
if($_FILES){
$upload = new UploadFile();
//设置上传文件大小
$upload->maxSize = 204800;
//设置上传文件类型
$upload->allowExts = array('jpg', 'gif', 'png', 'jpeg');
//设置附件上传目录
$upload->thumb = true;
$upload->thumbPrefix = 'm_'; //生产2张缩略图
//设置缩略图最大宽度
$upload->thumbMaxWidth = '400,100';
//设置缩略图最大高度
$upload->thumbMaxHeight = '400,100';
$upload->savePath = './Uploads/shunongjj/';
//设置需要生成缩略图,仅对图像文件有效
// 设置引用图片类库包路径
//删除原图
//$upload->thumbRemoveOrigin = true;
if (!$upload->upload()) {
//捕获上传异常
//$this->error($upload->getErrorMsg());
$data['status']='0';
$this->ajaxReturn($data,'json');
} else {
//取得成功上传的文件信息
$info = $upload->getUploadFileInfo();
$imgpath = '/Uploads/shunongjj/'.$info[0]['savename'];
$data['picurl'] = $imgpath;
$data['status']='100';
$this->ajaxReturn($data,'json');
}
}
}
/*
* 无缩略图
*/
public function upload_wsl(){
import("ORG.Net.UploadFile");
//导入上传类
if($_FILES){
$upload = new UploadFile();
//设置上传文件大小
$upload->maxSize = 204800;
//设置上传文件类型
$upload->allowExts = array('jpg', 'gif', 'png', 'jpeg');
//设置附件上传目录
$upload->savePath = './Uploads/shunongjj/';
//设置需要生成缩略图,仅对图像文件有效
// 设置引用图片类库包路径
//删除原图
//$upload->thumbRemoveOrigin = true;
if (!$upload->upload()) {
//捕获上传异常
//$this->error($upload->getErrorMsg());
$data['status']='0';
return false;
// $this->ajaxReturn("","上传失败","");
} else {
//取得成功上传的文件信息
$info = $upload->getUploadFileInfo();
return $imgpath = '/Uploads/shunongjj/'.$info[0]['savename'];
}
}
}
/*
* 公司轮换首页图片
*/
public function upload_index(){
import("ORG.Net.UploadFile");
//导入上传类
if($_FILES){
$upload = new UploadFile();
//设置上传文件大小
$upload->maxSize = 204800;
//设置上传文件类型
$upload->allowExts = array('jpg', 'gif', 'png', 'jpeg');
//设置附件上传目录
$upload->savePath = './Uploads/shunongjj/';
//设置需要生成缩略图,仅对图像文件有效
// 设置引用图片类库包路径
//删除原图
//$upload->thumbRemoveOrigin = true;
if (!$upload->upload()) {
//捕获上传异常
//$this->error($upload->getErrorMsg());
$data['status']='0';
$this->ajaxReturn($data,'json');
} else {
//取得成功上传的文件信息
$info = $upload->getUploadFileInfo();
$imgpath = '/Uploads/shunongjj/'.$info[0]['savename'];
$data['picurl'] = $imgpath;
$data['status']='100';
$this->ajaxReturn($data,'json');
}
}
}
}
?>
模板 tpl 端
html
(图片上传规范:176*107)
js
/**
* uploadify插件上产图片
*/
$("#file_upload").uploadify({
//指定swf文件
'swf': '__PUBLIC__/uploadify/uploadify.swf',
//后台处理的页面
'uploader': '{:U("Upload/upload")}',
//按钮显示的文字
'buttonText': '上传图片',
//显示的高度和宽度,默认 height 30;width 120
//'height': 15,
//'width': 80,
//上传文件的类型 默认为所有文件 'All Files' ; '*.*'
//在浏览窗口底部的文件类型下拉菜单中显示的文本
'fileTypeDesc': 'Image Files',
//允许上传的文件后缀
'fileTypeExts': '*.gif; *.jpg; *.png',
//发送给后台的其他参数通过formData指定
//'formData': { 'someKey': 'someValue', 'someOtherKey': 1 },
//上传文件页面中,你想要用来作为文件队列的元素的id, 默认为false 自动生成, 不带#
//'queueID': 'fileQueue',
//选择文件后自动上传
'auto': true,
//设置为true将允许多文件上传
'onUploadSuccess': function(file, data, response){
var data = $.parseJSON(data);
if(data.status==100) {
$("#img_show").html("");
$("#img_url").val(data.picurl);
}else{
alert("上传失败,可能是您上传的图片大小不符合规范,请重试!");
}
}
});
});

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 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.

Using preprocessing statements and PDO in PHP can effectively prevent SQL injection attacks. 1) Use PDO to connect to the database and set the error mode. 2) Create preprocessing statements through the prepare method and pass data using placeholders and execute methods. 3) Process query results and ensure the security and performance of the code.

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.

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 makes it easy to create interactive web content. 1) Dynamically generate content by embedding HTML and display it in real time based on user input or database data. 2) Process form submission and generate dynamic output to ensure that htmlspecialchars is used to prevent XSS. 3) Use MySQL to create a user registration system, and use password_hash and preprocessing statements to enhance security. Mastering these techniques will improve the efficiency of web development.

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 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.


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

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

MantisBT
Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.

ZendStudio 13.5.1 Mac
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 English version
Recommended: Win version, supports code prompts!

SublimeText3 Linux new version
SublimeText3 Linux latest version