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<?php |
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namespace smtech\GradingAnalytics\Snapshots; |
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use smtech\GradingAnalytics\Snapshots\Exception\SnapshotException; |
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class History extends CacheableDatabase |
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{ |
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protected $courseId; |
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protected static $data; |
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public function __construct($databaseProvider, $courseId) |
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{ |
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parent::__construct($databaseProvider); |
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if (is_numeric($courseId)) { |
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$this->courseId = $courseId; |
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} else { |
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throw new SnapshotException( |
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'Numeric Course ID required', |
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SnapshotException::COURSE_ID |
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); |
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} |
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} |
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public function getCourseId() |
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{ |
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return $this->courseId; |
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} |
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public function getDepartmentId() |
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{ |
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if ($this->cacheHistory()) { |
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return (integer) static::$data[$this->getCourseID()][0]['course[account_id]']; |
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} |
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return false; |
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} |
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public function getCurrentTimestamp() |
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{ |
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if ($this->cacheHistory()) { |
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return substr(static::$data[$this->getCourseId()][0]['timestamp'], 0, 10); |
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} |
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return false; |
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} |
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public function cacheHistory() |
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{ |
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if (empty(static::$data[$this->getCourseId()])) { |
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static::$data = $this->getCache()->getCache($this->getCourseId()); |
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if (empty($this->data)) { |
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if ($response = $this->sql->query(" |
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SELECT * FROM `course_statistics` |
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WHERE |
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`course[id]` = '" . $this->getCourseId() . "' |
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ORDER BY |
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`timestamp` DESC |
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")) { |
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while ($row = $response->fetch_assoc()) { |
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static::$data[$this->getCourseId()][] = $row; |
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} |
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$this->getCache()->setCache($this->getCourseId(), static::$data[$This->getCourseId()]); |
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} |
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} |
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} |
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return (is_array(static::$data) && |
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is_array(static::$data[$this->getCourseId()]) && |
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count(static::$data[$this->getCourseId()]) > 0 |
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); |
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} |
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public function getHistory() |
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{ |
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if ($this->cacheHistory()) { |
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return $this->data; |
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} |
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return false; |
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} |
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} |
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smtech /
grading-analytics
This check marks access to variables or properties that have not been declared yet. While PHP has no explicit notion of declaring a variable, accessing it before a value is assigned to it is most likely a bug.