/**
* Initializes a Stringy object and assigns both str and encoding properties
* the supplied values. $str is cast to a string prior to assignment, and if
* $encoding is not specified, it defaults to mb_internal_encoding(). Throws
* an InvalidArgumentException if the first argument is an array or object
* without a __toString method.
*
* @param mixed $str Value to modify, after being cast to string
* @param string $encoding The character encoding
*
* @throws \InvalidArgumentException if an array or object without a
* __toString method is passed as the first argument
*/
public function __construct($str = '', $encoding = null)
{
if (is_array($str)) {
throw new \InvalidArgumentException('Passed value cannot be an array');
} elseif (is_object($str) && !method_exists($str, '__toString')) {
throw new \InvalidArgumentException('Passed object must have a __toString method');
}
// don't throw a notice on PHP 5.3
if (!defined('ENT_SUBSTITUTE')) {
define('ENT_SUBSTITUTE', 8);
}
// init
UTF8::checkForSupport();
$this->str = (string) $str;
if ($encoding) {
$this->encoding = $encoding;
} else {
UTF8::mbstring_loaded();
$this->encoding = mb_internal_encoding();
}
if ($encoding) {
$this->encoding = $encoding;
} else {
$this->encoding = mb_internal_encoding();
}
}