$match)
{
$choices = explode('|', $matches[1][$key]);
if($calculate)
{
$permutations *= count($choices);
}
else
{
$find[] = $match;
$replace[] = $choices[mt_rand(0, count($choices) - 1)];
}
}
if(!$calculate)
{
# Ensure multiple instances of the same spinning combinations will spin differently
$string = str_replace_first($find, $replace, $string);
}
}
return $$return;
}
# Similar to str_replace, but only replaces the first instance of the needle
function str_replace_first($find, $replace, $string)
{
# Ensure we are dealing with arrays
if(!is_array($find))
{
$find = array($find);
}
if(!is_array($replace))
{
$replace = array($replace);
}
foreach($find as $key => $value)
{
if(($pos = strpos($string, $value)) !== false)
{
# If we have no replacement make it empty
if(!isset($replace[$key]))
{
$replace[$key] = '';
}
$string = mb_substr($string, 0, $pos).$replace[$key].mb_substr($string, $pos + mb_strlen($value));
}
}
return $string;
} // end of function
$string = '{{The|A}} {{quick|speedy|fast}} {{brown|black|red}} {{fox|wolf}} {{jumped|bounded|hopped|skipped}} over the {{lazy|tired}} {{dog|hound}}';
echo ''.spin($string, false, true).' permutations...
';
for($i = 1; $i <= 10; $i++)
{
echo spin($string, false).'
';
}
echo '
';
?>