docs/api/source-system.library.db.pgsql.html
| 1: | <?php |
| 2: | namespace Opencart\System\Library\DB; |
| 3: | /** |
| 4: | * Class PgSQL |
| 5: | * |
| 6: | * @package Opencart\System\Library\DB |
| 7: | */ |
| 8: | class PgSQL { |
| 9: | /** |
| 10: | * @var mixed |
| 11: | */ |
| 12: | private $connection; |
| 13: | |
| 14: | /** |
| 15: | * Constructor |
| 16: | * |
| 17: | * @param string $hostname |
| 18: | * @param string $username |
| 19: | * @param string $password |
| 20: | * @param string $database |
| 21: | * @param string $port |
| 22: | */ |
| 23: | public function __construct(string $hostname, string $username, string $password, string $database, string $port = '') { |
| 24: | if (!$port) { |
| 25: | $port = '5432'; |
| 26: | } |
| 27: | |
| 28: | try { |
| 29: | $pg = @pg_connect('host=' . $hostname . ' port=' . $port . ' user=' . $username . ' password=' . $password . ' dbname=' . $database . ' options='--client_encoding=UTF8' '); |
| 30: | } catch (\Exception $e) { |
| 31: | throw new \Exception('Error: Could not make a database link using ' . $username . '@' . $hostname); |
| 32: | } |
| 33: | |
| 34: | if ($pg) { |
| 35: | $this->connection = $pg; |
| 36: | pg_query($this->connection, "SET CLIENT_ENCODING TO 'UTF8'"); |
| 37: | |
| 38: | // Sync PHP and DB time zones |
| 39: | pg_query($this->connection, "SET TIMEZONE = '" . $this->escape(date('P')) . "'"); |
| 40: | } |
| 41: | } |
| 42: | |
| 43: | /** |
| 44: | * Query |
| 45: | * |
| 46: | * @param string $sql |
| 47: | * |
| 48: | * @return \stdClass |
| 49: | */ |
| 50: | public function query(string $sql): \stdClass { |
| 51: | $resource = pg_query($this->connection, $sql); |
| 52: | |
| 53: | if ($resource === false) { |
| 54: | throw new \Exception('Error: ' . pg_last_error($this->connection) . '<br/>' . $sql); |
| 55: | } |
| 56: | |
| 57: | $data = []; |
| 58: | |
| 59: | while ($result = pg_fetch_assoc($resource)) { |
| 60: | $data[] = $result; |
| 61: | } |
| 62: | |
| 63: | pg_free_result($resource); |
| 64: | |
| 65: | $query = new \stdClass(); |
| 66: | $query->row = $data[0] ?? []; |
| 67: | $query->rows = $data; |
| 68: | $query->num_rows = count($data); |
| 69: | |
| 70: | return $query; |
| 71: | } |
| 72: | |
| 73: | /** |
| 74: | * Escape |
| 75: | * |
| 76: | * @param string $value |
| 77: | * |
| 78: | * @return string |
| 79: | */ |
| 80: | public function escape(string $value): string { |
| 81: | return pg_escape_string($this->connection, $value); |
| 82: | } |
| 83: | |
| 84: | /** |
| 85: | * countAffected |
| 86: | * |
| 87: | * @return int |
| 88: | */ |
| 89: | public function countAffected(): int { |
| 90: | return pg_affected_rows($this->connection); |
| 91: | } |
| 92: | |
| 93: | /** |
| 94: | * getLastId |
| 95: | * |
| 96: | * @return int |
| 97: | */ |
| 98: | public function getLastId(): int { |
| 99: | $query = $this->query("SELECT LASTVAL() AS id"); |
| 100: | |
| 101: | return $query->row['id']; |
| 102: | } |
| 103: | |
| 104: | /** |
| 105: | * isConnected |
| 106: | * |
| 107: | * @return bool |
| 108: | */ |
| 109: | public function isConnected(): bool { |
| 110: | return pg_connection_status($this->connection) == PGSQL_CONNECTION_OK; |
| 111: | } |
| 112: | |
| 113: | /** |
| 114: | * Destructor |
| 115: | * |
| 116: | * Closes the DB connection when this object is destroyed. |
| 117: | */ |
| 118: | public function __destruct() { |
| 119: | if ($this->connection) { |
| 120: | pg_close($this->connection); |
| 121: | |
| 122: | $this->connection = null; |
| 123: | } |
| 124: | } |
| 125: | } |
| 126: | |
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