/**
* Return a substring of this sequence.
*
* @param int $start
* @param int $end
*
* @return StringBuilder
* @throws OutOfBoundsException
*/
public function substring($start, $end = null)
{
$start = (int) $start;
$end = $end !== null ? (int) $end : null;
if ($start < 0 || $start >= $this->length() || $end !== null && ($end < 0 || $end >= $this->length())) {
throw new OutOfBoundsException();
}
$string = mb_substr($this->string, $start, $end !== null ? $end + 1 : $this->length(), $this->encoding);
$stringBuilder = new StringBuilder($string);
$stringBuilder->setEncoding($this->encoding);
return $stringBuilder;
}
public function testSetEncoding()
{
$this->stringBuilder->setEncoding('ISO-8859-1');
$this->assertEquals('ISO-8859-1', $this->stringBuilder->getEncoding());
$this->assertEquals($this->initialString, $this->stringBuilder->__toString());
}
