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this function spells out numbers in englisch text.
number to words conversion.
<?php
$nwords = array( "zero", "one", "two", "three", "four", "five", "six", "seven",
"eight", "nine", "ten", "eleven", "twelve", "thirteen",
"fourteen", "fifteen", "sixteen", "seventeen", "eighteen",
"nineteen", "twenty", 30 => "thirty", 40 => "forty",
50 => "fifty", 60 => "sixty", 70 => "seventy", 80 => "eighty",
90 => "ninety" );
function int_to_words($x)
{
global $nwords;
if(!is_numeric($x))
{
$w = '#';
}else if(fmod($x, 1) != 0)
{
$w = '#';
}else{
if($x < 0)
{
$w = 'minus ';
$x = -$x;
}else{
$w = '';
}
if($x < 21)
{
$w .= $nwords[$x];
}else if($x < 100)
{
$w .= $nwords[10 * floor($x/10)];
$r = fmod($x, 10);
if($r > 0)
{
$w .= '-'. $nwords[$r];
}
} else if($x < 1000)
{
$w .= $nwords[floor($x/100)] .' hundred';
$r = fmod($x, 100);
if($r > 0)
{
$w .= ' and '. int_to_words($r);
}
} else if($x < 1000000)
{
$w .= int_to_words(floor($x/1000)) .' thousand';
$r = fmod($x, 1000);
if($r > 0)
{
$w .= ' ';
if($r < 100)
{
$w .= 'and ';
}
$w .= int_to_words($r);
}
} else {
$w .= int_to_words(floor($x/1000000)) .' million';
$r = fmod($x, 1000000);
if($r > 0)
{
$w .= ' ';
if($r < 100)
{
$word .= 'and ';
}
$w .= int_to_words($r);
}
}
}
return $w;
}
// demonstration
if(isset($_POST['num']))
{
echo '
the number reads '.int_to_words($_POST['num']).'<p>
<a href="'.$_SERVER['PHP_SELF'].'">try again</a>';
}else{
echo '
<form method="post" action="'.$_SERVER['PHP_SELF'].'">
<input type="text" name="num">
<input type="submit" value="spell number">
</form>';
}
?>
learn more about some of the PHP functions used in this snippet: array, echo, else, floor, fmod, for, function, glob, global, is_numeric, isset, min, ord, return
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