php自定义hash函数实例

function SimpleHash($str){  
  $n = 0;
  // The magic happens here:
  // I just loop trough all letters and add the
  // ASCII value to a integer variable. 
  for ($c=0; $c < strlen($str); $c++)
    $n += ord($str[$c]);
  // After we went trough all letters
  // we have a number that represents the
  // content of the string
  return $n;
}

$TestString = 'www.jb51.net';
print SimpleHash($TestString); 
// returns: 1082