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("/
$title = preg_replace(array("/(
if (empty($title)) {
return $default;
} else {
return $title;
}
}
//获取文件描述信息
function getFileDescribe($file,$length=200, $default="None describe")
{
$metas = get_meta_tags($file);
if ($meta['description'] != "") {
return $metas['description'];
}
$fileContent = getFileContent($file);
preg_match("/(
$pattern = array("/()/i","/(
$description = preg_replace($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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PHP and Python are both high-level programming languages that are widely used in web development, data processing and automation tasks. 1.PHP is often used to build dynamic websites and content management systems, while Python is often used to build web frameworks and data science. 2.PHP uses echo to output content, Python uses print. 3. Both support object-oriented programming, but the syntax and keywords are different. 4. PHP supports weak type conversion, while Python is more stringent. 5. PHP performance optimization includes using OPcache and asynchronous programming, while Python uses cProfile and asynchronous programming.

PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

PHP originated in 1994 and was developed by RasmusLerdorf. It was originally used to track website visitors and gradually evolved into a server-side scripting language and was widely used in web development. Python was developed by Guidovan Rossum in the late 1980s and was first released in 1991. It emphasizes code readability and simplicity, and is suitable for scientific computing, data analysis and other fields.

PHP is suitable for web development and rapid prototyping, and Python is suitable for data science and machine learning. 1.PHP is used for dynamic web development, with simple syntax and suitable for rapid development. 2. Python has concise syntax, is suitable for multiple fields, and has a strong library ecosystem.

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PHPhassignificantlyimpactedwebdevelopmentandextendsbeyondit.1)ItpowersmajorplatformslikeWordPressandexcelsindatabaseinteractions.2)PHP'sadaptabilityallowsittoscaleforlargeapplicationsusingframeworkslikeLaravel.3)Beyondweb,PHPisusedincommand-linescrip

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