php 目录递归遍历程序
一个朋友写的一款目录查找程序,可以根据用户输入的目录名称查到到指定目录或文件,同时还支持锁定目录,有需要的朋友可以参考一下,代码如下:
- <?php
- class Finder{
- private $key;
- private $result;
- private $previewLen = 50;
- private $file_type = array('html','php','htm','txt');
-
- function __construct($key){
- $this->key = $key;
- }
-
- function find($folder){
- $this->result = array();
-
- if(is_array($folder)){
- foreach($folder as $f){
- $this->_find_in_folder($f);
- }
- }else{
- $this->_find_in_folder($folder, true);
- }
-
- return $this->result;
- }
-
- function _find_in_folder($folder,$bSub=false){
- foreach(glob($folder.DIRECTORY_SEPARATOR.'*') as $f){
- if (is_file($f)){
- $extend =explode("." , $f);
- $type = strtolower(end($extend));
- if(in_array($type,$this->file_type)){
- $fd = file_get_contents($f);
- $pos = strpos($fd,$this->key);
- if($pos!==false){
- $end = $pre = '...';
- $pos -= floor($this->previewLen/2);
- if($pos<0){
- $pre = '';
- $pos = 0;
- }
-
- $findata = substr($fd,$pos,$this->previewLen);
- $findata = str_replace($this->key,'<span style="color:red">'.$this->key.'</span>',$findata);
- $this->result[] = array('path'=>$f,'preview'=>$pre.$findata.$end);
- }
- }
- continue;
- }
-
- if($bSub && is_dir($f)){
- $this->_find_in_folder($f,true);
- }
- }
- }
-
- }
-
- $cur_path = dirname(__FILE__);
- if(isset($_GET['a'])){
- $key = $_POST['key'];
- if(!$key) die('关键字不能为空');
-
- $cf = new Finder($key);
-
- $in_folder = array();
- $limit_folder = $_POST['limit_folder'];
- if($limit_folder==1){
- if(!isset($_POST['folder']) || !$_POST['folder']) die('限定目录不能为空');
- $in_folder = $_POST['folder'];
- $ret = $cf->find($in_folder);
- }else{
- $ret = $cf->find($cur_path);
- }
-
- echo "搜索[$key]结果:<br />";
- if(!$ret) die('无');
- foreach($ret as $p=>$f){
- echo "$p. t$f[path] => $f[preview] <br />n";
- }
- exit();
- }
-
- $folder = array();
- function readFolder($path){
- global $folder;
- $folder[] = $path;
- foreach(glob($path.DIRECTORY_SEPARATOR.'*') as $f){
- if (is_dir($f)) {
- readFolder($f);
- }
- }
- }
-
- readFolder($cur_path);
- $folder_op = array();
- foreach($folder as $path){
- $folder_op[] = "<option value="$path">$path</option>";
- }
- $folder_op = implode($folder_op);
- ?>
- <form action="?a=do" method="post">
- 搜索关键字:<input type="text" name="key" value=""><br />
- 搜索目录:<select name="folder[]" multiple="true"><?php echo $folder_op ?></select><br />
- 是否限定以上选择的目录:<input type="radio" name="limit_folder" value="1" />是 <input type="radio" name="limit_folder" value="0" checked="true" />否
- <input type="submit" value="搜索" />
- </form>