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<?php |
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declare(strict_types=1); |
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namespace LibraryCatalog\Service\Repository; |
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trait PdoTrait |
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{ |
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/** @var \PDO */ |
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protected \PDO $pdo; |
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/** @var bool */ |
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protected bool $pdoReady = false; |
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/** @var \Closure */ |
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protected \Closure $connection; |
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/** |
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* @param string $host |
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* @param string $user |
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* @param string $password |
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* @param string $dbname |
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*/ |
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protected function prepareConnection(string $host, string $user, string $password, string $dbname): void |
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{ |
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$this->connection = function () use ($host, $user, $password, $dbname): \PDO { |
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if (!$this->pdoReady) { |
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$this->pdo = new \PDO( |
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sprintf('mysql:dbname=%s;host=%s', $dbname, $host), |
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$user, |
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$password, |
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array(\PDO::ATTR_PERSISTENT => true) |
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); |
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$this->pdoReady = true; |
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} |
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return $this->pdo; |
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}; |
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} |
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/** |
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* @param string $table |
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* @param mixed $id |
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* @return array|null |
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* @throws Exception |
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*/ |
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protected function fetchOne(string $table, $id): ?array |
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{ |
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/** @var \PDO $pdo */ |
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$pdo = ($this->connection)(); |
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$stmt = $pdo->prepare("SELECT * FROM $table WHERE id = ? LIMIT 1"); |
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if ($stmt === false) { |
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throw new Exception("Can not init PDO: " . json_encode($pdo->errorInfo()), (int)$pdo->errorCode()); |
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} |
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$stmt->execute([$id]); |
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$res = $stmt->fetch(\PDO::FETCH_ASSOC); |
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// Convert false to null. |
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return $res ?: null; |
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} |
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/** |
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* @param string $table |
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* @param string $condition |
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* @param array $conditionData |
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* @param int $limit |
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* @param string $order |
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* @return array |
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* @throws Exception |
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*/ |
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4 |
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protected function fetchList( |
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string $table, |
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string $condition = '', |
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array $conditionData = [], |
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int $limit = 1000, |
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string $order = '' |
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): array { |
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/** @var \PDO $pdo */ |
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$pdo = ($this->connection)(); |
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// Prepare SQL with params. |
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$sql = "SELECT * FROM $table"; |
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4 |
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if ($condition != '') { |
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$sql .= ' WHERE ' . $condition; |
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} |
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if ($order != '') { |
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$sql .= ' ORDER BY ' . $order; |
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} |
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if ($limit > 0) { |
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$sql .= ' LIMIT ' . $limit; |
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} |
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$stmt = $pdo->prepare($sql); |
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if ($stmt === false) { |
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throw new Exception("Can not init PDO: " . json_encode($pdo->errorInfo()), (int)$pdo->errorCode()); |
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} |
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$stmt->execute($conditionData); |
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$res = $stmt->fetchAll(\PDO::FETCH_ASSOC); |
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// Convert false to empty result. |
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return $res ?: []; |
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} |
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/** |
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* Inserts data and returns its ID. |
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* |
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* @param string $table |
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* @param array $data |
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* @return mixed |
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* @throws Exception |
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*/ |
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4 |
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protected function insert(string $table, array $data) |
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{ |
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4 |
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$rowNames = ''; |
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$rowValues = ''; |
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foreach ($data as $name => $value) { |
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if ($value !== null) { |
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if ($rowNames !== '') { |
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$rowNames .= ','; |
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} |
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if ($rowValues !== '') { |
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$rowValues .= ','; |
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} |
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$rowNames .= $name; |
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$rowValues .= ':' . $name; |
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} else { |
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unset($data[$name]); |
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} |
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} |
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/** @var \PDO $pdo */ |
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4 |
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$pdo = ($this->connection)(); |
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$stmt = $pdo->prepare("INSERT INTO $table ($rowNames) VALUES ($rowValues)"); |
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if ($stmt === false) { |
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throw new Exception("Can not init PDO: " . json_encode($pdo->errorInfo()), (int)$pdo->errorCode()); |
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} |
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4 |
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if (!$stmt->execute($data)) { |
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throw new Exception("Can not insert data in PDO: " . json_encode($pdo->errorInfo()), (int)$pdo->errorCode()); |
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} |
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return $pdo->lastInsertId(); |
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} |
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} |
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alex-foleon /
service-library-catalog-php
