"; echo ""; echo "Variablenname"; echo "Variablenwert"; echo "Gesetzt"; echo "Null"; echo "Leer"; echo "Typ"; echo "Zahl"; echo "String"; echo "Boolen"; echo ""; echo ""; echo "var1"; echo "$var1"; echo "".isset($var1).""; echo "".is_null($var1).""; echo "".(empty($var1) ? "TRUE" : "FALSE").""; echo "".gettype($var1).""; echo "".is_numeric($var1).""; echo "".is_string($var1).""; echo "".is_bool($var1).""; echo ""; echo ""; echo "var2"; echo "$var2"; echo "".isset($var2).""; echo "".is_null($var2).""; echo "".(empty($var2) ? "TRUE" : "FALSE").""; echo "".gettype($var2).""; echo "".is_numeric($var2).""; echo "".is_string($var2).""; echo "".is_bool($var2).""; echo ""; echo ""; echo "var3"; echo "$var3"; echo "".isset($var3).""; echo "".is_null($var3).""; echo "".(empty($var3) ? "TRUE" : "FALSE").""; echo "".gettype($var3).""; echo "".is_numeric($var3).""; echo "".is_string($var3).""; echo "".is_bool($var3).""; echo ""; echo ""; echo "var4"; echo "$var4"; echo "".isset($var4).""; echo "".is_null($var4).""; echo "".(empty($var4) ? "TRUE" : "FALSE").""; echo "".gettype($var4).""; echo "".is_numeric($var4).""; echo "".is_string($var4).""; echo "".is_bool($var4).""; echo ""; echo ""; echo "var5"; echo "$var5"; echo "".isset($var5).""; echo "".is_null($var5).""; echo "".(empty($var5) ? "TRUE" : "FALSE").""; echo "".gettype($var5).""; echo "".is_numeric($var5).""; echo "".is_string($var5).""; echo "".is_bool($var5).""; echo ""; echo ""; echo "var6"; echo "$var6"; echo "".isset($var6).""; echo "".is_null($var6).""; echo "".(empty($var6) ? "TRUE" : "FALSE").""; echo "".gettype($var6).""; echo "".is_numeric($var6).""; echo "".is_string($var6).""; echo "".is_bool($var6).""; echo ""; echo ""; //Code ENDE ?>