源代码
<?php
/*
站内全文搜索引擎
作者：yannan
*/
function tree($directory)
{
global $string;
$mydir=dir($directory);
while($file=$mydir->read())
{
if((is_dir("$directory/$file")) AND ($file!=".") AND ($file!=".."))
{
tree("$directory/$file");
}
else
{
//检查文件类型，只搜索.php/html/htm文件
if((strstr($file,".php")==".php")||(strstr($file,".html")==".html")||(strstr($file,".htm")==".htm"))
{
//打开文件
if(!($myfile=fopen($directory."/".$file,"r")))
{
print("file could not be opened");
exit;
}
//搜索文件内容
while(!feof($myfile))
{
//read a line from the file
$myline=fgets($myfile,500);
if(ereg($string,$myline))
{
//输出结果
$path=substr($directory,2);
print("found <font color=\"ff00cc\">$string</font>");
print("in <a href=\"");
print($path."/".$file);
print("\">");
print($directory."/".$file);
print("</a>
\n");
print(strip_tags($myline));
print("
\n");
}
} //endwhile of out put the file
fclose($myfile);
} //endif
} //endelse
} //endwhile
$mydir->close();
} //endfunction
//start the program
print("<form method=\"post\">\n");
print("搜索关键字:");
print("<input type=\"text\" name=\"string\" size=\"30\">\n");
print("<input type=\"submit\" value=\"submit\">
\n");
print("</form>");
if((isset($string)) AND ($string!=""))
{
$root=".";
tree($root);
}
?>
