Aufgabe1($temp, $value);
$function = str_replace($valueInBrache, $return, $function);
}
$function = str_replace(['(', ')'], "", $function);
foreach (str_split($filterOperators) as $filterOperator) {
$filter = $filterDigits . "\\" . $filterOperator . $filterDigits;
$filter = "~" . $filter . "~";
while (true) {
$subTermCount = preg_match($filter, $function, $subTerm);
if ($subTermCount == 0) {
break;
}
$subTermValuesCount = preg_match_all("~" . $filterDigits . "~", $subTerm[0], $subTermValues);
if ($filterOperator == '/' && $subTermValues[1] == 0) {
return "Asymptote";
}
$ergebnis = $this->Calc($subTermValues[0][0], $subTermValues[0][1], $filterOperator);
$function = str_replace($subTerm[0], $ergebnis >= 0 ? "+" . $ergebnis : $ergebnis, $function);
$function = str_replace("-+", "-", $function);
$function = str_replace("+-", "-", $function);
$function = str_replace("--", "+", $function);
$function = str_replace("++", "+", $function);
}
}
return ltrim($function, "+");
}
}
$function = "((x * x) - 2 / (x + 8 * x) + 15)";
$value = -15;
$calc = new Calculator();
echo $calc->Aufgabe1($function, $value);
?>