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HomeBackend DevelopmentPHP Tutorial简单站内HTML文件搜索程序_PHP

简单站内HTML文件搜索程序_PHP

Jun 01, 2016 pm 12:30 PM
filereturnsearchdocumentprogramSimple

  自己写来简单的搜索自己电脑上的技术资料的. 大概的思路就是寻找指定目录下的文本, 然后如果有与关键字相匹配的数据就把文件名返回, 最后把所有搜索结果显示出来. 显示结果类似于baidu/google, 呵呵, 这个是纯粹为了好玩.

  程序代码:

/**
* 文件: search.php
* 功能: 搜索指定目录下的HTML文件
* 创建: 2005-9-23
* 作者: heiyeluren
*/


/* 基本函数 */

//获取目录下文件函数
function getFile($dir)
{
$dp = opendir($dir);
$fileArr = array();
while (!false == $curFile = readdir($dp)) {
if ($curFile!="." && $curFile!=".." && $curFile!="") {
if (is_dir($curFile)) {
$fileArr = getFile($dir."/".$curFile);
} else {
$fileArr[] = $dir."/".$curFile;
}
}
}
return $fileArr;
}

//获取文件内容
function getFileContent($file)
{
if (!$fp = fopen($file, "r")) {
die("Cannot open file $file");
}
while ($text = fread($fp, 4096)) {
$fileContent .= $text;
}
return $fileContent;
}

//搜索指定文件
function searchText($file, $keyword)
{
$text = getFileContent($file);
if (preg_match("/$keyword/i", $text)) {
return true;
}
return false;
}

//搜索出文章的标题
function getFileTitle($file, $default="None subject")
{
$fileContent = getFileContent($file);
$sResult = preg_match("/

.*/i", $fileContent, $matchResult);<br> $title = preg_replace(array("/(<title>)/i","/()/i"), "", $matchResult[0]);<br> if (empty($title)) {<br> return $default;<br> } else {<br> return $title;<br> }<br>} <p>//获取文件描述信息<br>function getFileDescribe($file,$length=200, $default="None describe")<br>{<br> $metas = get_meta_tags($file);<br> if ($meta['description'] != "") {<br> return $metas['description'];<br> }<br> $fileContent = getFileContent($file);<br> preg_match("/(</p> )/is", $fileContent, $matchResult);
$pattern = array("/()/i","/() /i", "/() /i", "/(简单站内HTML文件搜索程序_PHP) /i", "/([]) .*([]) /i","/&/i","/"/i","/'/i", "/\s/");
$description = preg_replace($pattern, "", $matchResult[0]);
$description = mb_substr($description, 0, $length)." ...";

return $description;
}

//加亮搜索结果中的关键字
function highLightKeyword($text, $keyword, $color="#C60A00")
{
$newword = "$keyword";
$text = str_replace($keyword, $newword, $text);
return $text;
}

//获取文件大小(KB)
function getFileSize($file)
{
$filesize = intval(filesize($file)/1024)."K";
return $filesize;
}

//获取文件最后修改的时间
function getFileTime($file)
{
$filetime = date("Y-m-d", filemtime($file));
return $filetime;
}

//搜索目录下所有文件
function searchFile($dir, $keyword)
{
$sFile = getFile($dir);
if (count($sFile) return false;
}
$sResult = array();
foreach ($sFile as $file) {
if (searchText($file, $keyword)) {
$sResult[] = $file;
}
}
if (count($sResult) return false;
} else {
return $sResult;
}
}


/* 测试代码 */

//指定要搜索的目录
$dir = "./php_Linux";
//要搜索的关键字
$keyword = "sendmail";

$fileArr = searchFile($dir, $keyword);
$searchSum = count($fileArr);

echo "搜索关键字: $keyword   搜索目录: $dir   搜索结果: $searchSum



";

if ($searchSum echo "没有搜索到任何结果";
} else {
foreach ($fileArr as $file) {
echo "". highLightKeyword(getFileTitle($file), $keyword) .
"
- ".getFileSize($file)." ". getFileTime($file) .
"
\n".highLightKeyword(getFileDescribe($file), $keyword) .
"


";
}
}

?>

  完全可以用在自己已经生成静态内容的的搜索, 但是程序效率不高. 如果能够适当的加上 索引/缓存 等机制的话, 我想程序会有趣很多.

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