php查找文件內(nèi)容關(guān)鍵字實例代碼

• 1. <?php

  2. /**

  3. * 文件: search.php

  4. * 功能: 搜索指定目錄下的HTML文件

  5. */

  6. /* 基本函數(shù) */

  7. 
     

  8. //獲取目錄下文件函數(shù)

  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. }

  24. 
      

  25. //獲取文件內(nèi)容

  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. }

  36. 
      

  37. //搜索指定文件

  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. }

  46. 
      

  47. //搜索出文章的標(biāo)題

  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. }

  59. 
      

  60. //獲取文件描述信息

  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", "/(<a.*>) /i", "/(<img.*>) /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)." ...";

  72. 
      

  73.         return $description;

  74. }

  75. 
      

  76. //加亮搜索結(jié)果中的關(guān)鍵字

  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. }

  83. 
      

  84. //獲取文件大小(KB)

  85. function getFileSize($file)

  86. {

  87.         $filesize = intval(filesize($file)/1024)."K";

  88.         return $filesize;

  89. }

  90. 
      

  91. //獲取文件最后修改的時間

  92. function getFileTime($file)

  93. {

  94.         $filetime = date("Y-m-d", filemtime($file));

  95.         return $filetime;

  96. }

  97. 
      

  98. //搜索目錄下所有文件

  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. }

  117. 
       

  118. /* 測試代碼 */

  119. 
       

  120. //指定要搜索的目錄

  121. $dir = "./php_Linux";

  122. //要搜索的關(guān)鍵字

  123. $keyword = "sendmail";

  124. 
       

  125. $fileArr = searchFile($dir, $keyword);

  126. $searchSum = count($fileArr);

  127. 
       

  128. echo "搜索關(guān)鍵字: <b>$keyword</b> &nbsp; 搜索目錄: <b>$dir</b> &nbsp; 搜索結(jié)果: <b>$searchSum</b><br><hr size=1><br>";

  129. 
       

  130. if ($searchSum <= 0) {

  131. echo "沒有搜索到任何結(jié)果";

  132. } else {

  133. for