清理PHP字符串以输入数据库

Posted 2021-02-26

function sanitize_sql_string($string, $min='', $max='')
{
  $pattern[0] = '/(\\)/';
  $pattern[1] = "/"/";
  $pattern[2] = "/'/";
  $replacement[0] = '\\\';
  $replacement[1] = '"';
  $replacement[2] = "\'";
  $len = strlen($string);
  if((($min != '') && ($len < $min)) || (($max != '') && ($len > $max)))
    return FALSE;
  return preg_replace($pattern, $replacement, $string);
}
//usage
//sanitize_sql_string($an_unsafe_string);