Generate Sortkey v.1

sortkey-v1.php

<?php 

 $charTable=array(
  	'a' => 2,
  	'ä' => 2,
  	'b' => 3,
  	'c' => 4,
  	'd' => 5,
  	'e' => 6,
  	'f' => 7,
  	'g' => 8,
  	'h' => 9,
  	'i' => 10,
  	'j' => 11,
  	'k' => 12,
  	'l' => 13,
  	'm' => 14,
  	'n' => 15,
  	'o' => 16,
  	'ö' => 16,
  	'p' => 17,
  	'q' => 18,
  	'r' => 19,
  	's' => 20,
  	't' => 21,
  	'u' => 22,
  	'ü' => 22,
  	'v' => 23,
  	'w' => 24,
  	'x' => 25,
  	'y' => 26,
  	'z' => 27
  );

$lemma="Überzeit";
$lemma=(string)$lemma;
$lemma=strtolower($lemma);

$sort=0;
$multiply=1000000;
for($i=0;$i<4;$i++)
{
	$current = 0;
	if(strlen($lemma)<=$i)
	{
  	//$title ist zu ende
	}
	else
	{
  	if(array_key_exists($lemma[$i],$charTable))
  	{
	  	$current=$charTable[$lemma[$i]];
  	}
  	else
  	{
	  	$current = 1;
  	}
	}
	$current=$current*($multiply);
	$multiply=$multiply/100;
	$sort=$sort+$current;
}
print $sort."\n";