/**
* Returns a <code>Boolean</code> with a value represented by the
* specified string. The <code>Boolean</code> returned represents a
* true value if the string argument is not <code>null</code>
* and is equal, ignoring case, to the string {@code "true"}.
*
* @param s a string.
* @return the <code>Boolean</code> value represented by the string.
*/
public static function valueOf($value)
{
$b = new Boolean($value);
return $b->toNative();
}
