ThinkPHP学习笔记(十四)上传文件
需要进行Action的设置,包括UploadFile的文件引入
<?php /** * 处理文件上传功能 * @author admin * * 上传多文件时; * 可以在input中个的name中后加入[];例如:file[] * 或者可以设置标示:file1,file2 * * 只有在插入数据库的时候才需要进行循环插入 */ class FileAction extends Action{ public function index(){ $file=M('file'); $list=$file->select(); $this->assign('alist',$list); $this->display(); } function upload(){ //经过自定义模型 if (empty($_FILES)){ $this->error("必须选择上传文件"); }else { $msg = $this->up(); if (isset($msg)){ $result=$this->insertDb($msg); if ($result){ $this->success('上传成功'); }else{ $this->error('保存出错了那'); } }else{ $this->error($msg); } } } private function insertDb($data){ $file=M('file'); $result=true; for ($i = 0; $i data($data)->add()){ return false; } } return true; } private function up(){ import('ORG.Net.UploadFile'); $upload=new UploadFile(); $upload->maxSize='1000000';//大小:-1不限制;单位是bytes $upload->savePath='./Public/';//上传路径:建议以主路口或者平级目录的子目录来 $upload->saveRule='uniqid';//保存规则:默认是uniqid $upload->hashType='MD5';//hash验证方法,默认是md5 $upload->autoCheck=false; $upload->uploadReplace=true; $upload->allowExts=array('jpg','png');//允许上传的文件格式 $upload->allowTypes=array('image/png','image/jpg');//文件的mime类型 $upload->thumb=true;//是否开启图片文件缩略图 $upload->thumbMaxWidth='100,500';//可以用,分割,写多个最大宽度 $upload->thumbMaxHeight='100,500';//与width一一对应 $upload->thumbPrefix='s_,m_';//缩略图文件前缀,与width一一对应 // $upload->thumbPath='';//缩略图的保存路径,如果为空直接上传至$upload->savePath // $upload->thumbFile='';//缩略图的文件名,一般不会用,直接用前缀就可以了 $upload->thumbRemoveOrigin=1;//生成新图后是否删除原图 // $upload->autoSub=false;//是否使用子目录进行保存 // $upload->subType='';//子目录创建方式,默认为hash创建,也可以设置为date // $upload->dateFormat='';//子目录date方式的指定格式 // $upload->hashLevel='';//hash的层级 if ($upload->upload()) { $msg=$upload->getUploadFileInfo(); dump($msg); return $msg; }else { $this->error($upload->getErrorMsg()); return $upload->getErrorMsg(); } } } ?>
html
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title><!--{$title}--></title> <volist name="alist" id="vo"> <img src="/static/imghwm/default1.png" data-src="__PUBLIC__/s_<!--{$vo['filename']}-- alt=" ThinkPHP学习笔记(十四)下传文件 " >" class="lazy" filename>"/> <img src="/static/imghwm/default1.png" data-src="__PUBLIC__/m_<!--{$vo['filename']}-- alt=" ThinkPHP学习笔记(十四)下传文件 " >" class="lazy" filename>"/> </volist>

What’s still popular is the ease of use, flexibility and a strong ecosystem. 1) Ease of use and simple syntax make it the first choice for beginners. 2) Closely integrated with web development, excellent interaction with HTTP requests and database. 3) The huge ecosystem provides a wealth of tools and libraries. 4) Active community and open source nature adapts them to new needs and technology trends.

PHP and Python are both high-level programming languages that are widely used in web development, data processing and automation tasks. 1.PHP is often used to build dynamic websites and content management systems, while Python is often used to build web frameworks and data science. 2.PHP uses echo to output content, Python uses print. 3. Both support object-oriented programming, but the syntax and keywords are different. 4. PHP supports weak type conversion, while Python is more stringent. 5. PHP performance optimization includes using OPcache and asynchronous programming, while Python uses cProfile and asynchronous programming.

PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

PHP originated in 1994 and was developed by RasmusLerdorf. It was originally used to track website visitors and gradually evolved into a server-side scripting language and was widely used in web development. Python was developed by Guidovan Rossum in the late 1980s and was first released in 1991. It emphasizes code readability and simplicity, and is suitable for scientific computing, data analysis and other fields.

PHP is suitable for web development and rapid prototyping, and Python is suitable for data science and machine learning. 1.PHP is used for dynamic web development, with simple syntax and suitable for rapid development. 2. Python has concise syntax, is suitable for multiple fields, and has a strong library ecosystem.

PHP remains important in the modernization process because it supports a large number of websites and applications and adapts to development needs through frameworks. 1.PHP7 improves performance and introduces new features. 2. Modern frameworks such as Laravel, Symfony and CodeIgniter simplify development and improve code quality. 3. Performance optimization and best practices further improve application efficiency.

PHPhassignificantlyimpactedwebdevelopmentandextendsbeyondit.1)ItpowersmajorplatformslikeWordPressandexcelsindatabaseinteractions.2)PHP'sadaptabilityallowsittoscaleforlargeapplicationsusingframeworkslikeLaravel.3)Beyondweb,PHPisusedincommand-linescrip

PHP type prompts to improve code quality and readability. 1) Scalar type tips: Since PHP7.0, basic data types are allowed to be specified in function parameters, such as int, float, etc. 2) Return type prompt: Ensure the consistency of the function return value type. 3) Union type prompt: Since PHP8.0, multiple types are allowed to be specified in function parameters or return values. 4) Nullable type prompt: Allows to include null values and handle functions that may return null values.


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