how to get details from database for each option mentioned in select list when select the each option in select list

问题

doctor select list.Select list name as dn

I want to get doctors information for each doctor separately

回答1:

Well, I don't know why would you do that, Don't you have these information already in database?

Anyway, this function will return all the content between <option> and </option> in an array

function getContents($str, $startDelimiter, $endDelimiter) {
  $contents = array();
  $startDelimiterLength = strlen($startDelimiter);
  $endDelimiterLength = strlen($endDelimiter);
  $startFrom = $contentStart = $contentEnd = 0;
  while (false !== ($contentStart = strpos($str, $startDelimiter, $startFrom))) {
    $contentStart += $startDelimiterLength;
    $contentEnd = strpos($str, $endDelimiter, $contentStart);
    if (false === $contentEnd) {
      break;
    }
    $contents[] = substr($str, $contentStart, $contentEnd - $contentStart);
    $startFrom = $contentEnd + $endDelimiterLength;
  }

  return $contents;
}

usage: $data = getContents($data , '<option>' , '</option>');

And now you can call foreach loop to loop over each option.

来源：https://stackoverflow.com/questions/47407546/how-to-get-details-from-database-for-each-option-mentioned-in-select-list-when-s