search
HomeBackend DevelopmentPHP TutorialPHP file and directory operations

PHP file and directory operations

May 29, 2018 am 10:49 AM
phpoperateTable of contents

This article mainly introduces PHP file and directory operations, involving PHP's operation skills related to file and directory traversal, judgment and sorting. There are more detailed instructions in the comments. Friends in need can refer to it

The examples in this article describe PHP file and directory operations. Share it with everyone for your reference, the details are as follows:

File directory related functions

<?php
// 输出目录中的文件
function outputcurfiles ($allowedtypes, $thedir){
//首先,我们确保目录存在。
if (is_dir ($thedir)){
 //现在,我们使用scandir扫描目录中的文件。
 $scanarray = scandir ($thedir);
 //接着我们开始解析数组。
 //scandir()用“.”和“..”统计文件导航列表
 //因此作为文件,我们不应该列出他们。
 for ($i = 0; $i < count ($scanarray); $i++){
  if ($scanarray[$i] != "." && $scanarray[$i] != ".."){
   //现在,进行检查,以确保这是一个文件,而不是一个目录。
   if (is_file ($thedir . "/" . $scanarray[$i])){
    //现在,因为我们将允许客户端编辑这个文件,
    //我们必须检查它是否是可读和可写。
    if (is_writable ($thedir. "/" . $scanarray[$i]) &&  is_readable($thedir . "/" . $scanarray[$i])){
     //现在,我们检查文件类型是否存在于允许的类型数组中.
     $thepath = pathinfo ($thedir . "/" . $scanarray[$i]);
     if (in_array ($thepath[&#39;extension&#39;], $allowedtypes)){
      //如果文件符合规定,我们可以继续输出.
      echo $scanarray[$i] . "<br />";
     }
    }
   }
  }
 }
} else {
 echo "对不起,这个目录不存在.";
}
}
$allowedtypes = array ("txt","html");
outputcurfiles ($allowedtypes, "testfolder");
///////////////////////////////////////////////////
function recurdir ($thedir) {
  //First attempt to open the directory.
  try {
    if ($adir = opendir ($thedir)){
      //扫描目录。
      while (false !== ($anitem = readdir ($adir))){
        //不统计目录中包含“.”或“..”的情况
        if ($anitem != "." && $anitem != ".."){
          //此时如果是一个目录,则缩进一点
          //再去递归
          if (is_dir ($thedir . "/" . $anitem)){
            ?><span style="font-weight: bold;" mce_style="font-weight: bold;"><?php echo $anitem; ?></span><?php
            ?><p style="margin-left: 10px;" mce_style="margin-left:10px;"><?php
            recurdir ($thedir . "/" . $anitem );
            ?></p><?php
          } elseif (is_file ($thedir . "/" . $anitem)){
            //此时输出文件.
            echo $anitem . "<br />";
          }
        }
      }
    } else {
      throw new exception ("Sorry, directory could not be openend.");
    }
  } catch (exception $e) {
    echo $e->getmessage();
  }
}
echo "<br />/////////////////////////////////////<br /><br />";
recurdir("testfolder");
//////////////////////////////////////////////////////////////////
echo "<br />/////////////////////////////////////<br /><br />";
function sortfilesbydate ($thedir){
  //首先,需要确保目录存在。
  if (is_dir ($thedir)){
    //接着,我们使用scandir扫描此目录中的文件.
    $scanarray = scandir ($thedir);
    $finalarray = array();
    //然后开始解析数组
    //scandir()用“.”和“..”统计文件导航列表
    //因此作为文件,我们不应该列出他们.
    for ($i = 0; $i < count ($scanarray); $i++){
      if ($scanarray[$i] != "." && $scanarray[$i] != ".."){
        //现在,我们检查,以确保这是一个文件,而不是一个目录.
        if (is_file ($thedir . "/" . $scanarray[$i])){
          //现在需要做的是循环数据到一个关联数组.
          $finalarray[$thedir . "/" . $scanarray[$i]] = filemtime ($thedir . "/" . $scanarray[$i]);
        }
      }
    }
    //至此,我们已经遍历了整个数组,现在需要做的只是asort()它。
    asort ($finalarray);
    return ($finalarray);
  } else {
    echo "对不起,这个目录不存在.";
  }
}
//然后,我们将函数指向我们需要查看的目录.
$sortedarray = sortfilesbydate ("testfolder");
//至此,就可以按照如下形式输出:
while ($element = each ($sortedarray)){
  echo "File: " . $element[&#39;key&#39;] . " was last modified: " . date ("F j, Y h:i:s", $element[&#39;value&#39;]) . "<br />";
}
?>

The above is the entire article Content, I hope it will be helpful to everyone’s study.


Related recommendations:

phpFile directoryOperation development process and example sharing

php tutorial on how to traverse file directories

##php chmod() function and batch modification of file directories Permissions

The above is the detailed content of PHP file and directory operations. For more information, please follow other related articles on the PHP Chinese website!

Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
The Continued Use of PHP: Reasons for Its EnduranceThe Continued Use of PHP: Reasons for Its EnduranceApr 19, 2025 am 12:23 AM

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: Exploring Their Similarities and DifferencesPHP and Python: Exploring Their Similarities and DifferencesApr 19, 2025 am 12:21 AM

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 and Python: Different Paradigms ExplainedPHP and Python: Different Paradigms ExplainedApr 18, 2025 am 12:26 AM

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 and Python: A Deep Dive into Their HistoryPHP and Python: A Deep Dive into Their HistoryApr 18, 2025 am 12:25 AM

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.

Choosing Between PHP and Python: A GuideChoosing Between PHP and Python: A GuideApr 18, 2025 am 12:24 AM

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 and Frameworks: Modernizing the LanguagePHP and Frameworks: Modernizing the LanguageApr 18, 2025 am 12:14 AM

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.

PHP's Impact: Web Development and BeyondPHP's Impact: Web Development and BeyondApr 18, 2025 am 12:10 AM

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

How does PHP type hinting work, including scalar types, return types, union types, and nullable types?How does PHP type hinting work, including scalar types, return types, union types, and nullable types?Apr 17, 2025 am 12:25 AM

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.

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

MantisBT

MantisBT

Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.

SAP NetWeaver Server Adapter for Eclipse

SAP NetWeaver Server Adapter for Eclipse

Integrate Eclipse with SAP NetWeaver application server.

MinGW - Minimalist GNU for Windows

MinGW - Minimalist GNU for Windows

This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.

PhpStorm Mac version

PhpStorm Mac version

The latest (2018.2.1) professional PHP integrated development tool

VSCode Windows 64-bit Download

VSCode Windows 64-bit Download

A free and powerful IDE editor launched by Microsoft