/**
* Returns true if the string contains $needle, false otherwise. By default
* the comparison is case-sensitive, but can be made insensitive by setting
* $caseSensitive to false.
*
* @param string $needle Substring to look for
* @param bool $caseSensitive Whether or not to enforce case-sensitivity
*
* @return bool Whether or not $str contains $needle
*/
public function contains($needle, $caseSensitive = true)
{
$encoding = $this->encoding;
if ($caseSensitive) {
return UTF8::strpos($this->str, $needle, 0, $encoding) !== false;
} else {
return UTF8::stripos($this->str, $needle, 0, $encoding) !== false;
}
}