插入语句在scandir中不起作用

Question

I have a following query which is not working for a specific case.

function scantemp(){
  if ($dir = opendir('../themes/')) {
    $onlyfolder = array('.', '..');
    while (false !== ($files = readdir($dir))) {
      if (!in_array($files, $onlyfolder)) {
          $insert = mysql_query("INSERT INTO `templates` (temp_loc) VALUES ('$files')");
      } 
    }
    closedir($dir);
  }
}

This code is scanning folders and inserting them to database but it is always inserting. I want to insert if folder does not exist. Please advise.

Answer 1

For this purpose add a unique index by putting the following SQL.

ALTER TABLE templates ADD UNIQUE ( temp_loc )

after that if your record exists then insertion will not be occur. now use your code

function scantemp(){
 if ($dir = opendir('../themes/')) {
    $onlyfolder = array('.', '..');
    while (false !== ($files = readdir($dir))) {
        if (!in_array($files, $onlyfolder)) {
                $insert = mysql_query("INSERT INTO `templates` (temp_loc) VALUES ('$files')");
        }   
    }
    closedir($dir);
}
}