目录中特定文件的PHP列表

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,但它完成了这项工作。

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?

 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来查看扩展的简单方法

你会想要使用glob()

例:

 $files = glob('/path/to/dir/*.xml'); 
 $it = new RegexIterator(new DirectoryIterator("."), "/\\.xml\$/i")); foreach ($it as $filename) { //... } 

您也可以使用迭代器的recursion变体遍历整个目录层次结构。

目录中的列表文件和文件夹 (完整代码):
如果您只想要特定的扩展名,则必须取消第5行的注释

 <?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>"; ?> 

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

我使用这个代码:

 <?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"); } } ?> 

最简单的答案是把另一个条件'.xml' == strtolower(substr($file, -3))

但是我build议使用glob

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); } 

现在你可以用path实例化RecursiveDirectoryIterator,像这样:

  $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,还需要将$ iterator(ExtensionFIlter Iterator)作为parameter passing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,否则你将得到所有的文件