public function testSubar()
{
$array = CArray::fromElements("a", "b", "c", "d", "e");
$subarray = CArray::subar($array, 3);
$this->assertTrue(CArray::equals($subarray, CArray::fromElements("d", "e")));
$subarray = CArray::subar($array, 1, 3);
$this->assertTrue(CArray::equals($subarray, CArray::fromElements("b", "c", "d")));
// Special cases.
$subarray = CArray::subar($array, 5);
$this->assertTrue($subarray->getSize() == 0);
$subarray = CArray::subar($array, 5, 0);
$this->assertTrue($subarray->getSize() == 0);
$subarray = CArray::subar($array, 0, 0);
$this->assertTrue($subarray->getSize() == 0);
$subarray = CArray::subar($array, 2, 0);
$this->assertTrue($subarray->getSize() == 0);
}
/**
* Returns a sequence of elements from an array, as another array.
*
* This method works much like `substr` method of the CUStringObject class.
*
* The method allows for an empty array to be returned.
*
* @param int $startPos The position of the first element in the sequence to be copied.
* @param int $length **OPTIONAL. Default is** *as many elements as the starting element is followed by*. The
* number of elements in the sequence to be copied.
*
* @return CArrayObject The array containing the copied elements.
*/
public function subar($startPos, $length = null)
{
return self::fromSplArray(CArray::subar($this->m_splArray, $startPos, $length));
}
