本文实例讲述了PHP实现多文件上传的方法。分享给大家供大家参考。具体实现方法如下:
<?php define('ROOT','D:/Program Files/www/test/'); class Files_Tool{ protected static $allowExt=array('.jpg','.jpeg','.png','.gif','.bmp','.svg','.chm','.pdf','.zip','.rar','.tar','.gz','.bzip2','.ppt','.doc'); public static $wrong=array(); public static $path=array(); protected static $error=array( 0=>'文件上传失败,没有错误发生,文件上传成功', 1=>'文件上传失败,上传的文件超过了 php.ini中upload_max_filesize 选项限制的值', 2=>'文件上传失败,上传文件的大小超过了 HTML 表单中 MAX_FILE_SIZE 选项指定的值', 3=>'文件上传失败,文件只有部分被上传', 4=>'文件上传失败,没有文件被上传', 5=>'文件上传失败,未允许的后缀', 6=>'文件上传失败,找不到临时文件夹.PHP 4.3.10 和 PHP 5.0.3 引进', 7=>'文件上传失败,文件写入失败.PHP 5.1.0 引进', 8=>'文件上传失败,未接收到表单域的NAME', 9=>'文件上传失败,,错误未知' ); public static function upload($name){ //检测是否接收到表单域的NAME if(!isset($_FILES[$name])){ self::$wrong[]=8; return false; } //3维数组简化成2维数组 $files=array_shift($_FILES); //获取后缀 $files=self::get_Ext($files); //处理文件次数 $n=count($files['name']); for($i=0;$i<$n;$i++){ //查看当前文件是否有错误信息,有则跳过当前文件,处理下个文件 if($files['error'][$i]!=0){ self::$wrong[$i+1]=$files['error'][$i]; continue; } //查看当前文件的后缀,是否允许,如果不允许,跳过当前文件 if(!in_array($files['name'][$i],self::$allowExt)){ self::$wrong[$i+1]=5; continue; } //路径 $dir=self::time_Dir(); //文件名 $name=self::rand_Name(); //后缀 $ext=$files['name'][$i]; //文件位置 $path=$dir.$name.$ext; //移动临时文件,如果失败,跳过当前文件 if(!move_uploaded_file($files['tmp_name'][$i],$path)){ self::$wrong[$i]=9; continue; } //存入路径 self::$path[$i+1]=strtr($path,array(ROOT=>'')); } return self::$path; } //获取后缀的方法 protected static function get_Ext($arr){ if(!is_array($arr) || !isset($arr['name'])){return false;} foreach($arr['name'] as $k=>$v){ $arr['name'][$k]=strtolower(strrchr($v,'.')); } return $arr; } //以日期生成路径 protected static function time_Dir(){ $dir=ROOT.'Data/images/'.date('Y/m/d/',time()); if(!is_dir($dir)){ mkdir($dir,0777,true); } return $dir; } //生成随机文件名 protected static function rand_Name(){ $str=str_shuffle('1234567890qwertyuiopasdfghjklzxcvbnm'); $str=substr($str,0,6); return $str; } //错误接口 public static function errors(){ foreach(self::$wrong as $k=>$v){ self::$wrong[$k]='第'.$k.'个'.self::$error[$k]; } return self::$wrong; } }
希望本文所述对大家的php程序设计有所帮助。

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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