chamilo / chamilo-lms

						$value = ord($string[$position]);

						// Check that the byte is valid, then add it to the character:

						if (($value & 0xC0) === 0x80) {

							$character |= ($value & 0x3F) << (--$remaining * 6);

						}

						// If it is invalid, count the sequence as invalid and reprocess the current byte:

						else {

							$valid = false;

							$position--;

							break;

						}

					}

				}

				else {

			// Continuation byte:

			else {

				// Check that the byte is valid, then add it to the character:

				if (($value & 0xC0) === 0x80) {

					$remaining--;

					$character |= ($value & 0x3F) << ($remaining * 6);

				}

				// If it is invalid, count the sequence as invalid and reprocess the current byte as the start of a sequence:

				else {

					$valid = false;

					$remaining = 0;

					$i--;

				}

			}

			// If we've reached the end of the current byte sequence, append it to Unicode::$data