Php search file content keyword instance code

1. <? Php
2. /**
3. * File: search. php
4. * Function: Search for HTML files in a specified directory
5. */
6. /* Basic functions */
8. // Obtain the file functions in the directory
9. Function getFile ($ dir)
10. {
11. $ Dp = opendir ($ dir );
12. $ FileArr = array ();
13. While (! False = $ curFile = readdir ($ dp )){
14. If ($ curFile! = "." & $ CurFile! = "..." & $ CurFile! = ""){
15. If (is_dir ($ curFile )){
16. $ FileArr = getFile ($ dir. "/". $ curFile );
17. } Else {
18. $ FileArr [] = $ dir. "/". $ curFile;
19. }
20. }
21. }
22. Return $ fileArr;
23. }
25. // Obtain the File Content
26. Function getFileContent ($ file)
27. {
28. If (! $ Fp = fopen ($ file, "r ")){
29. Die ("Cannot open file $ file ");
30. }
31. While ($ text = fread ($ fp, 4096 )){
32. $ FileContent. = $ text;
33. }
34. Return $ fileContent;
35. }
37. // Search for a specified object
38. Function searchText ($ file, $ keyword)
39. {
40. $ Text = getFileContent ($ file );
41. If (preg_match ("/$ keyword/I", $ text )){
42. Return true;
43. }
44. Return false;
45. }
47. // Search the title of the article
48. Function getFileTitle ($ file, $ default = "None subject ")
49. {
50. $ FileContent = getFileContent ($ file );
51. $ SResult = preg_match ("/<title>. * </title>/I", $ fileContent, $ matchResult );
52. $ Title = preg_replace (array ("/(<title>)/I", "/(</title>)/I "),"", $ matchResult [0]);
53. If (empty ($ title )){
54. Return $ default;
55. } Else {
56. Return $ title;
57. }
58. }
60. // Obtain the file description
61. Function getFileDescribe ($ file, $ length = 200, $ default = "None describe ")
62. {
63. $ Metas = get_meta_tags ($ file );
64. If ($ meta [description]! = ""){
65. Return $ metas [description];
66. }
67. $ FileContent = getFileContent ($ file );
68. Preg_match ("/(<body. * </body>)/is", $ fileContent, $ matchResult );
69. $ Pattern = array ("/(<^ x80-xff]>)/I", "/(<input. *>)/I ","/(<. *>)/I ","/()/I ","/([<script. *>]). * ([</script>])/I ","/& amp;/I ","/& quot;/I ","/& #039; /I ","/s /");
70. $ Description = preg_replace ($ pattern, "", $ matchResult [0]);
71. $ Description = mb_substr ($ description, 0, $ length )."...";
73. Return $ description;
74. }
76. // Highlight the keywords in the search results
77. Function highLightKeyword ($ text, $ keyword, $ color = "# C60A00 ")
78. {
79. $ Newword = "<font color = $ color> $ keyword </font> ";
80. $ Text = str_replace ($ keyword, $ newword, $ text );
81. Return $ text;
82. }
84. // Get the file size (KB)
85. Function getFileSize ($ file)
86. {
87. $ Filesize = intval (filesize ($ file)/1024). "K ";
88. Return $ filesize;
89. }
91. // Obtain the last modification time of the object
92. Function getFileTime ($ file)
93. {
94. $ Filetime = date ("Y-m-d", filemtime ($ file ));
95. Return $ filetime;
96. }
98. // Search all objects in the directory
99. Function searchFile ($ dir, $ keyword)
100. {
101. $ SFile = getFile ($ dir );
102. If (count ($ sFile) <= 0 ){
103. Return false;
104. }
105. $ SResult = array ();
106. Foreach ($ sFile as $ file ){
107. If (searchText ($ file, $ keyword )){
108. $ SResult [] = $ file;
109. }
110. }
111. If (count ($ sResult) <= 0 ){
112. Return false;
113. } Else {
114. Return $ sResult;
115. }
116. }
118. /* Test code */
120. // Specify the directory to be searched
121. $ Dir = "./php_Linux ";
122. // The keyword to be searched
123. $ Keyword = "sendmail ";
125. $ FileArr = searchFile ($ dir, $ keyword );
126. $ SearchSum = count ($ fileArr );
128. Echo "Search keyword: <B> $ keyword </B> & nbsp; search directory: <B> $ dir </B> & nbsp; search result: <B> $ searchSum </B> <br>
130. If ($ searchSum <= 0 ){
131. Echo "no results found ";
132. } Else {
133. For