Created
December 5, 2014 14:38
-
-
Save shackep/8537d9c6d100e543968b to your computer and use it in GitHub Desktop.
Convert Numeral to String
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
<?php | |
/* | |
Plugin Name: Convert Numeral to String | |
Description: This allows you to take a numeral (42) and convert it to a string (forty-two). Usage: convert_numeral_to_string(42); | |
Version: 0.1 | |
License: GPL | |
Author: Eric Defore | |
Author URI: arbor.edu | |
*/ | |
function convert_numeral_to_string($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) $number < 0 - PHP_INT_MAX) { | |
// overflow | |
trigger_error( | |
'convert_numeral_to_string only accepts numbers between -' . PHP_INT_MAX . ' and ' . PHP_INT_MAX, | |
E_USER_WARNING | |
); | |
return false; | |
} | |
if ($number < 0) { | |
return $negative . convert_numeral_to_string(abs($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 .= $conjunction . convert_numeral_to_string($remainder); | |
} | |
break; | |
default: | |
$baseUnit = pow(1000, floor(log($number, 1000))); | |
$numBaseUnits = (int) ($number / $baseUnit); | |
$remainder = $number % $baseUnit; | |
$string = convert_numeral_to_string($numBaseUnits) . ' ' . $dictionary[$baseUnit]; | |
if ($remainder) { | |
$string .= $remainder < 100 ? $conjunction : $separator; | |
$string .= convert_numeral_to_string($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; | |
} | |
?> |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment