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@ 2013-09-03T11:01:58Z

<?php
$satz = '??halägerlo ich bi? .n.. der satz.';
$satz = preg_replace('/[\?]+\s/', '.', $satz);
$satz = preg_replace('/[^a-z0-9-üßäö\?]+\s/', ' ', $satz);
$satz = preg_replace('/[^a-z0-9-üßäö\s]+/', '', $satz);
print_r($satz);

Output
Performance
VLD
References
Branches

print_r: documentation ( source)
preg_replace: documentation ( source)

preferences:dark modelive preview

40.36 ms | 402 KiB | 5 Q