The code for directory or folder traversal and deletion of specified files implemented in PHP is very simple and suitable for reference by beginners.
The main functions are as follows: Traverse the files, directories and subdirectories under the folder, read the directories and files under the current file, and delete the directories, subdirectories and files under the current folder. Note: Chinese catalogs are not supported yet. <?php header("Content-type:text/html;charset=utf-8"); /** * 读取当前目录下的文件和目录 * * @param string $path 路径 * @return array 所有满足条件的文件 */ function tlist($path){ $path = iconv('utf-8', 'gbk', $path); if(!is_dir($path)){ throw new Exception($path."不是目录"); } $arr = array('dir'=>array(),'file'=>array()); $hd = opendir($path); while(($file = readdir($hd))!==false){ if($file=="."||$file=="..") {continue;} if(is_dir($path."/".$file)){ $arr['dir'][] = iconv('gbk','utf-8',$file); }else if(is_file($path."/".$file)){ $arr['file'][] = iconv('gbk','utf-8',$file); } } closedir($hd); echo "目录有:".implode("<br />",$arr['dir'])."<br />"; echo "文件有:".implode("<br />",$arr['file']); } /** * 遍历当前目录下的文件和目录以及子文件夹中目录 * * @param string $path 路径 * @return array 所有满足条件的文件 */ function blist($path){ if(!is_dir(iconv("utf-8","gbk",$path))){ throw new Exception("文件夹".$path."不存在或者不是文件"); } $arr = array(); $hd = opendir(iconv("utf-8","gbk",$path)); while(($file = readdir($hd))!==false){ if($file=="."||$file=="..") {continue;} $newpath=iconv('utf-8', 'gbk', $path) .'/'.$file; if(is_dir($newpath)){ $arr[] = blist($path."/".$file); }else if(is_file($newpath)){ $arr[] = iconv('gbk','utf-8',$file); } } closedir($hd); return $arr; } /**by http://bbs.it-home.org * 删除目录下的文件以及子目录 * #param string $path 路径 * #return string 删除成功返回true 失败返回false; */ function dirDel($path){ if(!is_dir($path)){ throw new Exception($path."输入的不是有效目录"); } $hand = opendir($path); while(($file = readdir($hand))!==false){ if($file=="."||$file=="..") continue; if(is_dir($path."/".$file)){ dirDel($path."/".$file); }else{ @unlink($path."/".$file); } } closedir($hand); @rmdir($path); } ?>Articles you may be interested in: How to delete specified files and folders in Php Small example of PHP deleting all files created N minutes ago php example: batch delete folders and files in folders Example of how to delete a directory and all files in php PHP directory traversal and deletion function examples Three ways to delete a directory using php rmdir Delete the php code of all files in the specified folder Delete php custom function for multi-level directories php code to delete a directory and list all files in the directory php code for recursively deleting files and directories php code for recursively deleting all files in a directory and multi-level subdirectories php code for recursively creating and deleting folders Example of php recursively deleting directories |

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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