I will provide you with an example of uploading multiple files in a PHP ordinary form. Friends in need can refer to it.
php is very convenient for processing uploads. The upload information is stored in the $_FILES array, and then processed with the help of php related functions. Of course, if you have a good foundation, you can check out more implementation methods of PHP file upload: A simple example of php multiple file upload (getting started) Simple example of php multiple image upload (picture and text) php code to upload multiple files Three ways to upload multiple files in php Let’s take a look at the code. <?php /* * class: 文件上传类 * www: bbs.it-home.org * date: 2013.1.20 * wwwRoot 网站根目录 */ class Upload { public $up_ext=array(), $up_max=5210, $up_dir; private $up_name, $up_rename=true, $up_num=0, $up_files=array(), $up_ret=array(); function __construct($name, $ext=array(), $rename=true) { if (!empty($name)) { $this->up_name = $name; !empty($ext) && $this->up_ext = $ext; $this->up_rename = $rename; $this->up_dir = wwwRoot. $GLOBALS['cfg_upload_path']; $this->InitUpload(); } else { exit('upload文件域名称为空,初始化失败!'); } } private function InitUpload() { if (is_array($_FILES[$this->up_name])) { $up_arr = count($_FILES[$this->up_name]); $up_all = count($_FILES[$this->up_name], 1); $up_cnt = ($up_all - $up_arr) / $up_arr; for ($i = 0; $i < $up_cnt; $i ++) { if ($_FILES[$this->up_name]['error'][$i] != 4) { $this->up_files[] = array( 'tmp_name' => $_FILES[$this->up_name]['tmp_name'][$i], 'name' => $_FILES[$this->up_name]['name'][$i], 'type' => $_FILES[$this->up_name]['type'][$i], 'size' => $_FILES[$this->up_name]['size'][$i], 'error' => $_FILES[$this->up_name]['error'][$i] ); } } $this->up_num = count($this->up_files); } else { if (isset($_FILES[$this->up_name])) { $this->up_files = array( 'tmp_name' => $_FILES[$this->up_name]['tmp_name'], 'name' => $_FILES[$this->up_name]['name'], 'type' => $_FILES[$this->up_name]['type'], 'size' => $_FILES[$this->up_name]['size'], 'error' => $_FILES[$this->up_name]['error'] ); $this->up_num = 1; } else { exit('没找找到需要upload的文件!'); } } $this->ChkUpload(); } private function ChkUpload() { if (empty($this->up_ext)) { $up_mime = array('image/wbmp', 'image/bmp', 'image/gif', 'image/pjpeg', 'image/x-png'); foreach ($this->up_files as $up_file) { $up_allw = false; foreach ($up_mime as $mime) { if ($up_file['type'] == $mime) { $up_allw = true; break; } } !$up_allw && exit('不允许上传'.$up_file['type'].'格式的文件!'); if ($up_file['size'] / 1024 > $this->up_max) { exit('不允许上传大于 '.$this->up_max.'K 的文件!'); } } } else { foreach ($this->up_files as $up_file) { $up_ext = end(explode('.', $up_file['name'])); $up_allw = false; foreach ($this->up_ext as $ext) { if ($up_ext == $ext) { $up_allw = true; break; } } !$up_allw && exit('不允许上传.'.$up_ext.'格式的文件!'); if ($up_file['size'] / 1024 > $this->up_max) { exit('不允许上传大于 '.$this->up_max.'K 的文件!'); } } } $this->Uploading(); } private function Uploading() { if (IO::DIRCreate($this->up_dir)) { if (chmod($this->up_dir, 0777)) { if (!empty($this->up_files)) { foreach ($this->up_files as $up_file) { if (is_uploaded_file($up_file['tmp_name'])) { $file_name = $up_file['name']; if ($this->up_rename) { $file_ext = end(explode('.', $file_name)); $file_rnd = substr(md5(uniqid()), mt_rand(0, 26), 6); $file_name = date('ymdHis').'_'.$file_rnd.'.'.$file_ext; } $file_name = $this->up_dir.'/'.$file_name; if (move_uploaded_file($up_file['tmp_name'], $file_name)) { $this->up_ret[] = str_replace(wwwRoot, '', $file_name); } else { exit('文件上传失败!'); } } } } } else { exit('未开启写入权限!'); } } else { exit('上传目录创建失败!'); } } public function GetUpload() { return empty($this->up_ret) ? false : $this->up_ret; } function __destruct() {} } ?> |

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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