PHP目录中特定文件的列表

Question

以下代码将列出目录中的所有文件

<?php
if ($handle = opendir('.')) {
    while (false !== ($file = readdir($handle)))
    {
        if (($file != ".") 
         && ($file != ".."))
        {
            $thelist .= '<LI><a href="'.$file.'">'.$file.'</a>';
        }
    }

    closedir($handle);
}
?>

<P>List of files:</p>
<UL>
<P><?=$thelist?></p>
</UL>

虽然这是非常简单的代码，但它可以完成这项任务。

我现在正在寻找一种方法来列出最后只有.xml（或.XML）的文件，我该怎么做？

Answer 1

您将要使用glob()

示例：

$files = glob('/path/to/dir/*.xml');

Answer 2

if ($handle = opendir('.')) {
    while (false !== ($file = readdir($handle)))
    {
        if ($file != "." && $file != ".." && strtolower(substr($file, strrpos($file, '.') + 1)) == 'xml')
        {
            $thelist .= '<li><a href="'.$file.'">'.$file.'</a></li>';
        }
    }
    closedir($handle);
}

使用substr和strrpos查看扩展的简单方法

Answer 3

$it = new RegexIterator(new DirectoryIterator("."), "/\\.xml\$/i"));

foreach ($it as $filename) {
    //...
}

您还可以使用迭代器的递归变体遍历整个目录层次结构。

Answer 4

我使用此代码：

<?php

{
//foreach (glob("images/*.jpg") as $large) 
foreach (glob("*.xml") as $filename) { 

//echo "$filename\n";
//echo str_replace("","","$filename\n");

echo str_replace("","","<a href='$filename'>$filename</a>\n");

}
}


?>

Answer 5

目录中的列表文件和文件夹（完整代码）：
P.S。如果您只想要特定的扩展程序，则必须取消注释第5行

<?PHP
# The current directory
$directory = dir("./");

# If you want to turn on Extension Filter, then uncomment this:
### $allowed_ext = array(".sample", ".png", ".jpg", ".jpeg", ".txt", ".doc", ".xls"); 




## Description of the soft: list_dir_files.php  
## Major credits: phpDIRList 2.0 -(c)2005 Ulrich S. Kapp :: Systemberatung ::

$do_link = TRUE; 
$sort_what = 0; //0- by name; 1 - by size; 2 - by date
$sort_how = 0; //0 - ASCENDING; 1 - DESCENDING


# # #
function dir_list($dir){ 
    $i=0; 
    $dl = array(); 
    if ($hd = opendir($dir))    { 
        while ($sz = readdir($hd)) {  
            if (preg_match("/^\./",$sz)==0) $dl[] = $sz;$i.=1;  
        } 
    closedir($hd); 
    } 
    asort($dl); 
    return $dl; 
} 
if ($sort_how == 0) { 
    function compare0($x, $y) {  
        if ( $x[0] == $y[0] ) return 0;  
        else if ( $x[0] < $y[0] ) return -1;  
        else return 1;  
    }  
    function compare1($x, $y) {  
        if ( $x[1] == $y[1] ) return 0;  
        else if ( $x[1] < $y[1] ) return -1;  
        else return 1;  
    }  
    function compare2($x, $y) {  
        if ( $x[2] == $y[2] ) return 0;  
        else if ( $x[2] < $y[2] ) return -1;  
        else return 1;  
    }  
}else{ 
    function compare0($x, $y) {  
        if ( $x[0] == $y[0] ) return 0;  
        else if ( $x[0] < $y[0] ) return 1;  
        else return -1;  
    }  
    function compare1($x, $y) {  
        if ( $x[1] == $y[1] ) return 0;  
        else if ( $x[1] < $y[1] ) return 1;  
        else return -1;  
    }  
    function compare2($x, $y) {  
        if ( $x[2] == $y[2] ) return 0;  
        else if ( $x[2] < $y[2] ) return 1;  
        else return -1;  
    }  

} 

################################################## 
#    We get the information here 
################################################## 

$i = 0; 
while($file=$directory->read()) { 
    $file = strtolower($file);
    $ext = strrchr($file, '.');
    if (isset($allowed_ext) && (!in_array($ext,$allowed_ext)))
        {
            // dump 
        }
    else { 
        $temp_info = stat($file); 
        $new_array[$i][0] = $file; 
        $new_array[$i][1] = $temp_info[7]; 
        $new_array[$i][2] = $temp_info[9]; 
        $new_array[$i][3] = date("F d, Y", $new_array[$i][2]); 
        $i = $i + 1; 
        } 
} 
$directory->close(); 

################################################## 
# We sort the information here 
################################################# 

switch ($sort_what) { 
    case 0: 
            usort($new_array, "compare0"); 
    break; 
    case 1: 
            usort($new_array, "compare1"); 
    break; 
    case 2: 
            usort($new_array, "compare2"); 
    break; 
} 

############################################################### 
#    We display the infomation here 
############################################################### 

$i2 = count($new_array); 
$i = 0; 
echo "<table border=1> 
                <tr> 
                    <td width=150> File name</td> 
                    <td width=100> File Size</td> 
                    <td width=100>Last Modified</td> 
                </tr>"; 
for ($i=0;$i<$i2;$i++) { 
    if (!$do_link) { 
        $line = "<tr><td align=right>" .  
                        $new_array[$i][0] .  
                        "</td><td align=right>" .  
                        number_format(($new_array[$i][1]/1024)) .  
                        "k"; 
        $line = $line  . "</td><td align=right>" . $new_array[$i][3] . "</td></tr>"; 
    }else{ 
        $line = '<tr><td align=right><A HREF="' .   
                        $new_array[$i][0] . '">' .  
                        $new_array[$i][0] .  
                        "</A></td><td align=right>"; 
        $line = $line . number_format(($new_array[$i][1]/1024)) .  
                        "k"  . "</td><td align=right>" .  
                        $new_array[$i][3] . "</td></tr>"; 
    } 
    echo $line; 
} 
echo "</table>"; 


?>

Answer 6

你应该使用glob。

glob('*.xml')

有关使用glob和高级过滤的更多信息：

http://domexception.blogspot.fi/2013/08/php-using-functional-programming-for.html

Answer 7

最简单的答案是提出另一个条件'.xml' == strtolower(substr($file, -3))。

但我建议您也使用glob。

Answer 8

您可以像这样扩展RecursiveFilterIterator类：

class ExtensionFilter extends RecursiveFilterIterator
{
  /**
  * Hold the extensions pass to the class constructor 
  */
  protected $extensions;

  /**
   * ExtensionFilter constructor.
   *  
   * @param RecursiveIterator $iterator
   * @param string|array $extensions Extension to filter as an array ['php'] or
   * as string with commas in between 'php, exe, ini'
   */
  public function __construct(RecursiveIterator $iterator, $extensions)
  {
     parent::__construct($iterator);
     $this->extensions = is_array($extensions) ? $extensions :  array_map('trim', explode(',', $extensions));
  }

  public function accept()
  {
      if ($this->hasChildren()) {
         return true;
      }

      return $this->current()->isFile() &&
         in_array(strtolower($this->current()->getExtension()), $this->extensions);
  }

  public function getChildren()
  {
     return new self($this->getInnerIterator()->getChildren(), $this->extensions);
  }

现在您可以将路径作为参数实例化RecursiveDirectoryIterator，如下所示：

 $iterator = new RecursiveDirectoryIterator('\path\to\dir');
 $iterator = new ExtensionFilter($iterator, 'xml, php, ini');

 foreach($iterator as $file)
 {
   echo $file . '<br />';
 }

这将仅列出当前文件夹下的文件。

要获取子目录中的文件， 将$ iterator（ExtensionFIlter Iterator）作为参数传递给RecursiveIteratorIterator：

$iterator = new RecursiveIteratorIterator($iterator, RecursiveIteratorIterator::SELF_FIRST);

现在在这个迭代器上运行foreach循环。您将获得具有指定扩展名的文件

注意： - 还要确保在RecursiveIteratorIterator之前运行ExtensionFilter，否则你将获得所有文件

Answer 9

$ files数组将获取目录中具有指定扩展名的所有文件

$directory = 'pathto/directory';
$files = array();
$allowed_ext = array( "xml", "png", "jpg", "jpeg", "txt", "doc", "xls","csv"); 
// Check if the directory exists or not
if (file_exists($directory) && is_dir($directory)) {
    // Get the files in the directory
    $scan_contents = scandir($directory);
    // Filter out the current (.) and parent (..) directories 
    $files_array = array_diff($scan_contents, array('.', '..'));
    // Get each files of our directory with line break
    foreach ($files_array as $file) {
        //Get the file path
        $file_path = "$directory/$file";
        // Get the file extension
        $file_ext = strtolower(pathinfo($file_path, PATHINFO_EXTENSION));        
        if (in_array($file_ext, $allowed_ext) ) {
            $files[] = $file_path;
        }
    }
} 
echo '<pre>$files:-';
print_r($files);
echo '</pre>';

Answer 10

您可以在glob（）函数和pathinfo（）函数之间混合使用，如下所示。

下面的代码将显示特定扩展名“ pdf”的文件信息

elif request.method == 'DELETE':
        pricing_data = request.data

        return Response(status=status.HTTP_204_NO_CONTENT)