php 资料上传类
php 文件上传类
<?php/*** php 文件上传类* www.jbxue.com*/class UploadFile { /** * 允许的上传文件类型 * @var array $allowFileTypes * @access private */ private $allowFileTypes = array('jpeg','jpg','gif','bmp','png'); /** * 允许的上传文件大小,单位字节 * @var int $maxFileSize * @access public */ public $maxFileSize = 8388608; /** * 构造函数 */ public function __construct() { } /** * 设置允许的文件类型 * @param mixed $fileTypes 文件类型列表可以是数组和字符串,用“,”号隔开 * @return void * @access public */ public function setAllowFileType($fileTypes) { if (!is_array($fileTypes)) { $this->allowFileTypes = explode(',', $fileTypes); } else { $this->allowFileTypes = $fileTypes; } return; } /** * 上传文件 * @param string $fileField 要上传的文件如$_FILES['file'] * @param string $destFolder 上传的目录,会自动建立 * @param string $fileTypes 上传后文件命名方式0使用原文件名1使用当前时间戳作为文件名 * @return int * @access public */ public function upload($fileField, $destFolder = './', $fileNameType = 1) { switch ($fileField['error']) { case UPLOAD_ERR_OK : //其值为 0,没有错误发生,文件上传成功。 $upload_succeed = true; break; case UPLOAD_ERR_INI_SIZE : //其值为 1,上传的文件超过了 php.ini 中 upload_max_filesize 选项限制的值。 case UPLOAD_ERR_FORM_SIZE : //其值为 2,上传文件的大小超过了 HTML 表单中 MAX_FILE_SIZE 选项指定的值。 $errorMsg = '文件上传失败!失败原因:文件大小超出限制!'; $errorCode = -103; $upload_succeed = false; break; case UPLOAD_ERR_PARTIAL : //值:3; 文件只有部分被上传。 $errorMsg = '文件上传失败!失败原因:文件只有部分被上传!'; $errorCode = -101; $upload_succeed = false; break; case UPLOAD_ERR_NO_FILE : //值:4; 没有文件被上传。 $errorMsg = '文件上传失败!失败原因:没有文件被上传!'; $errorCode = -102; $upload_succeed = false; break; case UPLOAD_ERR_NO_TMP_DIR : //其值为 6,找不到临时文件夹。PHP 4.3.10 和 PHP 5.0.3 引进。 $errorMsg = '文件上传失败!失败原因:找不到临时文件夹!'; $errorCode = -102; $upload_succeed = false; break; case UPLOAD_ERR_CANT_WRITE : //其值为 7,文件写入失败。PHP 5.1.0 引进。 $errorMsg = '文件上传失败!失败原因:文件写入失败!'; $errorCode = -102; $upload_succeed = false; break; default : //其它错误 $errorMsg = '文件上传失败!失败原因:其它!'; $errorCode = -100; $upload_succeed = false; break; } if ($upload_succeed) { if ($fileField['size']>$this->maxFileSize) { $errorMsg = '文件上传失败!失败原因:文件大小超出限制!'; $errorCode = -103; $upload_succeed = false; } if ($upload_succeed) { $fileExt = FileSystem::fileExt($fileField['name']); if (!in_array(strtolower($fileExt),$this->allowFileTypes)) { $errorMsg = '文件上传失败!失败原因:文件类型不被允许!'; $errorCode = -104; $upload_succeed = false; } } } if ($upload_succeed) { if (!is_dir($destFolder) && $destFolder!='./' && $destFolder!='../') { $dirname = ''; $folders = explode('/',$destFolder); foreach ($folders as $folder) { $dirname .= $folder . '/'; if ($folder!='' && $folder!='.' && $folder!='..' && !is_dir($dirname)) { mkdir($dirname); } } chmod($destFolder,0777); } switch ($fileNameType) { case 1: $fileName = date('YmdHis'); $dot = '.'; $fileFullName = $fileName . $dot . $fileExt; $i = 0; //判断是否有重名文件 while (is_file($destFolder . $fileFullName)) { $fileFullName = $fileName . $i++ . $dot . $fileExt; } break; case 2: $fileFullName = date('YmdHis'); $i = 0; //判断是否有重名文件 while (is_file($destFolder . $fileFullName)) { $fileFullName = $fileFullName . $i++; } break; default: $fileFullName = $fileField['name']; break; } //die($destFolder . $fileFullName); $tempfile = str_replace('\\','\',$fileField['tmp_name']); //$files = if (move_uploaded_file($tempfile, $destFolder . $fileFullName)) { return $fileFullName; } else { $errorMsg = $destFolder.$fileFullName." 文件上传失败!失败原因:本地文件系统读写权限出错!"; $errorCode = -105; $upload_succeed = false; } } if (!$upload_succeed) { throw new Exception($errorMsg,$errorCode); } }

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











In PHP, password_hash and password_verify functions should be used to implement secure password hashing, and MD5 or SHA1 should not be used. 1) password_hash generates a hash containing salt values to enhance security. 2) Password_verify verify password and ensure security by comparing hash values. 3) MD5 and SHA1 are vulnerable and lack salt values, and are not suitable for modern password security.

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 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 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.

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.

PHP is suitable for web development, especially in rapid development and processing dynamic content, but is not good at data science and enterprise-level applications. Compared with Python, PHP has more advantages in web development, but is not as good as Python in the field of data science; compared with Java, PHP performs worse in enterprise-level applications, but is more flexible in web development; compared with JavaScript, PHP is more concise in back-end development, but is not as good as JavaScript in front-end development.

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.
