/**
* Builds a string version of the prepared statement
*
* @param string $query The query string to use as the base
* @param array $bindings The bindings to interpolate in
* @return string
* @since 2.0.0
**/
private function interpolate($query, $bindings)
{
$offset = 0;
$index = 0;
foreach (String::findLiteral('?', $query) as $placeholder) {
$sub = is_null($bindings[$index]) ? 'NULL' : $this->quote($bindings[$index]);
$query = substr_replace($query, $sub, $placeholder + $offset, 1);
$offset += strlen($sub) - 1;
$index++;
}
return $query;
}