function convertTwoDigit($digit1, $digit2)
{
if ($digit2 == "0") {
switch ($digit1) {
case "1":
return "ten";
case "2":
return "twenty";
case "3":
return "thirty";
case "4":
return "forty";
case "5":
return "fifty";
case "6":
return "sixty";
case "7":
return "seventy";
case "8":
return "eighty";
case "9":
return "ninety";
}
} else {
if ($digit1 == "1") {
switch ($digit2) {
case "1":
return "eleven";
case "2":
return "twelve";
case "3":
return "thirteen";
case "4":
return "fourteen";
case "5":
return "fifteen";
case "6":
return "sixteen";
case "7":
return "seventeen";
case "8":
return "eighteen";
case "9":
return "nineteen";
}
} else {
$temp = convertDigit($digit2);
switch ($digit1) {
case "2":
return "twenty-{$temp}";
case "3":
return "thirty-{$temp}";
case "4":
return "forty-{$temp}";
case "5":
return "fifty-{$temp}";
case "6":
return "sixty-{$temp}";
case "7":
return "seventy-{$temp}";
case "8":
return "eighty-{$temp}";
case "9":
return "ninety-{$temp}";
}
}
}
}
function convertNumber($num)
{
$dec = strpos($num, '.');
if ($dec !== false) {
list($num, $dec) = explode('.', $num);
} else {
$dec = 0;
}
$output = "";
if ($num[0] == "-") {
$output .= "negative ";
$num = ltrim($num, '-');
} else {
if ($num[0] == "+") {
$output .= "positive ";
$num = ltrim($num, '+');
}
}
if ($num[0] == "0") {
$output .= " zero";
} else {
$num = str_pad($num, 36, "0", STR_PAD_LEFT);
$group = rtrim(chunk_split($num, 3, " "), " ");
$groups = explode(" ", $group);
$groups2 = array();
foreach ($groups as $g) {
$groups2[] = convertThreeDigit($g[0], $g[1], $g[2]);
}
for ($z = 0; $z < count($groups2); $z++) {
if ($groups2[$z] != "") {
$output .= $groups2[$z] . convertGroup(11 - $z) . ($z < 11 && !array_search("", array_slice($groups2, $z + 1, -1)) && $groups2[11] != "" && $groups[11][0] == '0' ? " and " : ", ");
}
}
$output = rtrim($output, ", ");
}
if ($dec > 0) {
$output .= " point";
for ($i = 0; $i < strlen($dec); $i++) {
$output .= " " . convertDigit($dec[$i]);
}
}
return $output;
}
