Simple website HTML file search program

Introduction: this is a simple website HTML file searchProgramThe details page of PHP, related knowledge, skills, experience, and some PHP source code.

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Write it by yourself and simply search forTechnical materials. The general idea is to find the text in the specified directory. If there is data that matches the keyword, the file name will be returned, and all the search results will be displayed. the result is similar to Baidu/Google.

ProgramCode:

<? PHP
/**
* File: search. php
* Function: Search for HTML files in a specified directory
* Creation: 2005-9-23
* Author: heiyeluren */

/* Basic functions */

// Obtain the file functions in the directory
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;
}

// Obtain the File Content
Function getfilecontent ($ file)
{
If (! $ Fp = fopen ($ file, "R ")){
Die ("cannot open file $ file ");
}
While ($ text = fread ($ FP, 4096 )){
$ Filecontent. = $ text;
}
Return $ filecontent;
}

// Search for a specified object
Function searchtext ($ file, $ keyword)
{
$ Text = getfilecontent ($ file );
If (preg_match ("/$ keyword/I", $ text )){
Return true;
}
Return false;
}

// search for the title of Article
function getfiletitle ($ file, $ default = "None subject ")
{< br> $ filecontent = getfilecontent ($ file);
$ sresult = preg_match ("/. * <\/title>/I ", $ filecontent, $ matchresult);
$ Title = preg_replace (Array ("/()/I ", "/(<\/title>)/I"), "", $ matchresult [0]);
If (empty ($ title )) {
return $ default;
}else {
return $ title;
}< BR >}

// Obtain the file description
Function getfiledescribe ($ file, $ length = 200, $ default = "None describe ")
{
$ Metas = get_meta_tags ($ file );
If ($ meta ['description']! = ""){
Return $ Metas ['description'];
}
$ Filecontent = getfilecontent ($ file );
Preg_match ("/(<body. * <\/body>)/is", $ filecontent, $ matchresult );
$ Pattern = array ("/(<[^ \ X80-\ xFF]>)/I", "/(<input. *>)/I ","/(<. *>)/I ","/()/I ","/([<script. *>]). * ([<\/SCRIPT>])/I ","/& amp;/I ","/& quot;/I ","/& #039; /I ","/\ s /");
$ Description = preg_replace ($ pattern, "", $ matchresult [0]);
$ Description = mb_substr ($ description, 0, $ length )."...";

Return $ description;
}

// Highlight the keywords in the search results
Function highlightkeyword ($ text, $ keyword, $ color = "# c60a00 ")
{
$ Newword = "<font color = $ color> $ keyword </font> ";
$ Text = str_replace ($ keyword, $ newword, $ text );
Return $ text;
}

// Get the file size (KB)
Function getfilesize ($ file)
{
$ Filesize = intval (filesize ($ file)/1024). "K ";
Return $ filesize;
}

// Obtain the last modification time of the object
Function getfiletime ($ file)
{
$ Filetime = date ("Y-m-d", filemtime ($ file ));
Return $ filetime;
}

// Search all objects in the directory
Function searchfile ($ Dir, $ keyword)
{
$ Sfile = GetFile ($ DIR );
If (count ($ sfile) <= 0 ){
Return false;
}
$ Sresult = array ();
Foreach ($ sfile as $ file ){
If (searchtext ($ file, $ keyword )){
$ Sresult [] = $ file;
}
}
If (count ($ sresult) <= 0 ){
Return false;
} Else {
Return $ sresult;
}
}

/* Test code */

// Specify the directory to be searched
$ Dir = "./php_linux ";
// The keyword to be searched
$ Keyword = "Sendmail ";

$ Filearr = searchfile ($ Dir, $ keyword );
$ Searchsum = count ($ filearr );

Echo "Search Keyword: <B> $ keyword </B> & nbsp; search directory: <B> $ dir </B> & nbsp; search result: <B> $ searchsum </B> <br> <HR size = 1> <br> ";

If ($ searchsum <= 0 ){
Echo "no results found ";
} Else {
Foreach ($ filearr as $ file ){
Echo "<a href = '$ file' target =' _ blank '>". highlightkeyword (getfiletitle ($ file), $ keyword ).
"</A>-". getfilesize ($ file). "& nbsp;". getfiletime ($ file ).
"<Br> \ n <font size = 2>". highlightkeyword (getfiledescribe ($ file), $ keyword ).
"</Font> <br> ";
}
}

?>

It can be used in searches that have generated static content, but the program efficiency is not high. If you can add an index/Cache Mechanism appropriately, I think the program will be much more interesting.

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