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:

1. <?php
2. class Finder{
3. private $key;
4. private $result;
5. private $previewLen = 50;
6. private $file_type = array('html','php','htm','txt');
7. function __construct($key){
8. $this->key = $key;
9. }
10. function find($folder){
11. $this->result = array();
12. if(is_array($folder)){
13. foreach($folder as $f){
14. $this->_find_in_folder($f);
15. }
16. }else{
17. $this->_find_in_folder($folder, true);
18. }
19. return $this->result;
20. }
21. function _find_in_folder($folder,$bSub=false){
22. foreach(glob($folder.DIRECTORY_SEPARATOR.'*') as $f){
23. if (is_file($f)){
24. $extend =explode("." , $f);
25. $type = strtolower(end($extend));
26. if(in_array($type,$this->file_type)){
27. $fd = file_get_contents($f);
28. $pos = strpos($fd,$this->key);
29. if($pos!==false){
30. $end = $pre = '...';
31. $pos -= floor($this->previewLen/2);
32. if($pos<0){
33. $pre = '';
34. $pos = 0;
35. }
36. $findata = substr($fd,$pos,$this->previewLen);
37. $findata = str_replace($this->key,'<span >'.$this->key.'</span>',$findata);
38. $this->result[] = array('path'=>$f,'preview'=>$pre.$findata.$end);
39. }
40. }
41. continue;
42. }
43. if($bSub && is_dir($f)){
44. $this->_find_in_folder($f,true);
45. }
46. }
47. }
48. }
49. $cur_path = dirname(__FILE__);
50. if(isset($_GET['a'])){
51. $key = $_POST['key'];
52. if(!$key) die('关键字不能为空');
53. $cf = new Finder($key);
54. $in_folder = array();
55. $limit_folder = $_POST['limit_folder'];
56. if($limit_folder==1){
57. if(!isset($_POST['folder']) || !$_POST['folder']) die('限定目录不能为空');
58. $in_folder = $_POST['folder'];
59. $ret = $cf->find($in_folder);
60. }else{
61. $ret = $cf->find($cur_path);
62. }
63. echo "搜索[$key]结果：<br />";
64. if(!$ret) die('无');
65. foreach($ret as $p=>$f){
66. echo "$p. t$f[path] => $f[preview] <br />n";
67. }
68. exit();
69. }
70. $folder = array();
71. function readFolder($path){
72. global $folder;
73. $folder[] = $path;
74. foreach(glob($path.DIRECTORY_SEPARATOR.'*') as $f){
75. if (is_dir($f)) {
76. readFolder($f);
77. }
78. }
79. }
80. readFolder($cur_path);
81. $folder_op = array();
82. foreach($folder as $path){
83. $folder_op[] = "<option value="$path">$path</option>";
84. }//开源代码phpfensi.com
85. $folder_op = implode($folder_op);
86. ?>
87. <form action="?a=do" method="post">
88. 搜索关键字：<input type="text" name="key" value=""><br />
89. 搜索目录：<select name="folder[]" multiple="true"><?php echo $folder_op ?></select><br />
90. 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
91. <input type="submit" value="搜索" />
92. </form>