Created
February 26, 2015 08:13
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Convert number to Word
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function numberToWord($number) { | |
$hyphen = '-'; | |
$conjunction = ' and '; | |
$separator = ', '; | |
$negative = 'negative '; | |
$decimal = ' point '; | |
$dictionary = array( | |
0 => 'zero', | |
1 => 'one', | |
2 => 'two', | |
3 => 'three', | |
4 => 'four', | |
5 => 'five', | |
6 => 'six', | |
7 => 'seven', | |
8 => 'eight', | |
9 => 'nine', | |
10 => 'ten', | |
11 => 'eleven', | |
12 => 'twelve', | |
13 => 'thirteen', | |
14 => 'fourteen', | |
15 => 'fifteen', | |
16 => 'sixteen', | |
17 => 'seventeen', | |
18 => 'eighteen', | |
19 => 'nineteen', | |
20 => 'twenty', | |
30 => 'thirty', | |
40 => 'fourty', | |
50 => 'fifty', | |
60 => 'sixty', | |
70 => 'seventy', | |
80 => 'eighty', | |
90 => 'ninety', | |
100 => 'hundred', | |
1000 => 'thousand', | |
1000000 => 'million', | |
1000000000 => 'billion', | |
1000000000000 => 'trillion', | |
1000000000000000 => 'quadrillion', | |
1000000000000000000 => 'quintillion' | |
); | |
if (!is_numeric($number)) { | |
return false; | |
} | |
if (($number >= 0 && (int) $number < 0) || (int) $number < 0 - PHP_INT_MAX) { | |
// overflow | |
trigger_error( | |
'numberToWord only accepts numbers between -' . PHP_INT_MAX . ' and ' . PHP_INT_MAX, | |
E_USER_WARNING | |
); | |
return false; | |
} | |
if ($number < 0) { | |
return $negative . numberToWord(abs($number)); | |
} | |
$string = $fraction = null; | |
if (strpos($number, '.') !== false) { | |
list($number, $fraction) = explode('.', $number); | |
} | |
switch (true) { | |
case $number < 21: | |
$string = $dictionary[$number]; | |
break; | |
case $number < 100: | |
$tens = ((int) ($number / 10)) * 10; | |
$units = $number % 10; | |
$string = $dictionary[$tens]; | |
if ($units) { | |
$string .= $hyphen . $dictionary[$units]; | |
} | |
break; | |
case $number < 1000: | |
$hundreds = $number / 100; | |
$remainder = $number % 100; | |
$string = $dictionary[$hundreds] . ' ' . $dictionary[100]; | |
if ($remainder) { | |
$string .= $conjunction . numberToWord($remainder); | |
} | |
break; | |
default: | |
$baseUnit = pow(1000, floor(log($number, 1000))); | |
$numBaseUnits = (int) ($number / $baseUnit); | |
$remainder = $number % $baseUnit; | |
$string = numberToWord($numBaseUnits) . ' ' . $dictionary[$baseUnit]; | |
if ($remainder) { | |
$string .= $remainder < 100 ? $conjunction : $separator; | |
$string .= numberToWord($remainder); | |
} | |
break; | |
} | |
if (null !== $fraction && is_numeric($fraction)) { | |
$string .= $decimal; | |
$words = array(); | |
foreach (str_split((string) $fraction) as $number) { | |
$words[] = $dictionary[$number]; | |
} | |
$string .= implode(' ', $words); | |
} | |
return $string; | |
} |
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