php文本站内全文检索

http://tech.ddvip.com   2006年04月09日    社区交流

本文详细介绍php文本站内全文检索

  <?php 
/**************************************************** 
原作者: uchinaboy  
修改:lingshidao
特点:无需mysql支持;速度快;无需设置路径,放在哪级目录下,就搜索该目录和子目录;可以搜索一切文本类型的文件;显示文件相关内容;关键词自动高亮显示。
修改内容:增加了自动分页和风格设置文件。
搜索框代码(如果放在search.php相同目录下,无需修改):<form method="post" action="search.php"><input type="text" name="key" size=40 value="">            
<input type="submit" value="检索"></form>
****************************************************/ 
require ("template.php");
echo "<p align="center">";
echo "检索结果";
echo "</p><hr>";
if (function_exists("set_time_limit") && !get_cfg_var('safe_mode')){
set_time_limit(600);}
function get_msg($path) { 
global $key, $i; 
$handle = opendir($path); 
while ($filename = readdir($handle)) { 
//echo $path."/".$filename."<br>"; 
$newpath = $path."/".$filename; 
if (is_file($newpath)) { 
$fp = fopen($newpath, "r"); 
$msg = fread($fp, filesize($newpath)); 
fclose($fp); 
match_show($key, $msg, $newpath, $filename); 

if (is_dir($path."/".$filename) && ($filename != ".") && ($filename != "..")) { 
//echo "<BR><BR><BR>".$newpath."<BR><BR><BR>"; 
get_msg($path."/".$filename); 


closedir($handle); 
return $i; 
} 
function match_show($key, $msg, $newpath, $filename) {
  global $i;
  $key = chop($key);
  if($key) { $check_type = preg_match("/.html?$/", $filename);
  if($check_type) {$title = getHtmlTitle($msg);}
   $msg = preg_replace("/<style>.+</style>/is", "", $msg);
   $msg = preg_replace("/<[^>]+>/", "", $msg);
   $value = preg_match("/.*$key.*/i", $msg, $res);
     if($value) {
if($title) {$m = $title;} else {$m = $filename;}
    $i++;
    $link = $newpath;
    echo "$i.◆<a href="$link">$m</a><BR><BR>";
   }
  }else {
   echo "请输入关键词";
   exit;
  }
}
function getHtmlTitle($msg) {
   
   /* Locate where <title> is located in html file. */
   $lBound = strpos($msg, '<title>') + 7; //7 is the lengh of <title>.
if ($lBound < 1)
     return;
/* Locate where </TITLE> is located in html file. */
   $uBound = strpos($msg, '</title>', $lBound);
if ($uBound < $lBound)
     return;
/* Clean HTML and PHP tags out of $title with the madness below. */
   $title = ereg_replace("[tnr]", '', substr($msg, $lBound, $uBound - $lBound));
   $title = trim(strip_tags($title));
if (strlen($title) < 1) //A blank title is worthless.
     return;
return $title;
}
$i = get_msg(".");
echo "<hr><p align="center">";
echo " 已经搜索到了 $i 条信息";
?>

责编:豆豆技术应用

正在加载评论...