PHP源代码共享

/*
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 $string");
                                 print("in                                  print($path."/".$file);
                                 print("\">");
                                 print($directory."/".$file);
                                 print("
\n");
                                 print(strip_tags($myline));
                                 print("
\n");
                                 }
                               }   //endwhile of out put the file
                             fclose($myfile);

                    }    //endif

              }  //endelse

         }  //endwhile

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 $mydir->close();
}  //endfunction

//start the program
print("

if((isset($string)) AND ($string!=""))
{
$root=".";
tree($root);
}

?>