";
echo "Positionen:
";
echo "S ab Anfang: " . mb_strpos($tx, "S") . "
";
echo "S oder s ab Anfang: " . mb_stripos($tx, "S") . "
";
echo "s ab Ende: " . mb_strrpos($tx, "s") . "
";
echo "S oder s ab Ende: " . mb_strripos($tx, "s") . "
";
echo "Alle S oder s ab Anfang: ";
$pos = -1;
while($pos = mb_stripos($tx, "S", $pos+1))
echo "$pos ";
echo "
";
echo "Teilzeichenketten:
";
echo "Ab 4 bis Ende: " . mb_substr($tx, 4) . "
";
echo "Ab 4, 2 Zeichen: " . mb_substr($tx, 4, 2) . "
";
echo "Ab -4 bis Ende: " . mb_substr($tx, -4) . "
";
echo "Ab -4, 2 Zeichen: " . mb_substr($tx, -4, 2) . "
";
?>