PHP搜索文件

Question

我不知道如何编写代码来搜索文件夹中的文件。我有下面的代码来查看所有的文件从一个文件夹称为“文件”。

文件have示例

abc-def.txt
ghi-jkl.txt

所以我想有一个输入，如果我输入喜欢abc，所以它将搜索所有的文件，其中有abc在它和显示出来。有可能吗？

$thelist = "";
if ($handle = opendir('./files/')) {
  while (false !== ($file = readdir($handle))){
    if ($file != "." && $file != ".."){
      $thelist .= $file . '<br>';
    }
  }
  closedir($handle);
}
echo $thelist;
unset($thelist);

我需要帮助。

Answer 1

有一个很好的函数glob可以按模式进行搜索：

$pattern = filter_input(INPUT_POST, 'pattern', "*.txt", FILTER_SANITIZE_STRING);
foreach (glob($pattern) as $filename) {
    echo "$filename \n";
}

Answer 2

这是我的教学例子

<?php // demo/find_matching_files.php
/**
 * Put this script in the web root or other high-level directory
 *
 * Traverse this directory and all sub-directories down the tree
 * Show the matching files
 *
 * http://php.net/manual/en/class.recursivedirectoryiterator.php#85805
 */
error_reporting( E_ALL );

// USE THE OUTPUT BUFFER TO COLLECT THE LIST OF FILES
ob_start();

// USE THE REQUEST VARIABLE TO MATCH A SUBSTRING OF THE FILE NAME
$q = !empty($_GET['q']) ? $_GET['q'] : NULL;
if (empty($q)) trigger_error('Missing URL request argument "q=" for file name', E_USER_ERROR);

// CONSTRUCT THE REGEX
$rgx
= '#'         // REGEX DELIMITER
. preg_quote($q)
. '#'         // REGEX DELIMITER
. 'i'         // CASE-INSENSITIVE
;

// START IN THE CURRENT DIRECTORY
$path = realpath(getcwd());

// COLLECT THE DIRECTORY INFORMATION OBJECTS
$objs = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($path), RecursiveIteratorIterator::SELF_FIRST);

// ITERATE OVER THE OBJECTS
foreach($objs as $name => $obj)
{
    if (preg_match($rgx, $name)) echo PHP_EOL . $name;
}

// IF THERE ARE MATCHES OR NO MATCHES
$out = ob_get_clean();
echo '<pre>';
if (empty($out))
{
    echo PHP_EOL . "No match found for <b>$q</b>.";
}
else
{
    echo PHP_EOL . "Matches for <b>$q</b>.";
}

// SHOW THE GIT BRANCH
$root = '.git/HEAD';
$text = @file_get_contents($root);
if ($text)
{
    $text = explode(DIRECTORY_SEPARATOR, $text);
    $text = array_slice($text, 2);
    $name = implode(DIRECTORY_SEPARATOR, $text);
    echo PHP_EOL . "On Git branch: $name" . PHP_EOL;
}
else
{
    echo PHP_EOL . "On Git branch: UNKNOWN" . PHP_EOL;
}

// SHOW THE MATCHES
echo $out;

Answer 3

使用glob查找与模式或GlobIterator匹配的路径名。

如果需要递归，可以使用RegexIterator和RecursiveDirectoryIterator。See here