MySQLiでUPDATE文

MySQLiでUPDATE文

■ソース
$mysqli = new mysqli($dbhost, $dbuser, $dbpass, $dbname);
$mysqli->set_charset('utf8');

$sql = '
UPDATE table
SET aaa = aaa
WHERE id = ' . $mysqli->real_escape_string($id) . '
';
$row = $mysqli->query($sql);
if (!$row) {
error_log("[SQL error]\n" . __LINE__ . "行目\n" . $sql . "\n" . $mysqli->error . "\n" . $_SERVER[’PHP_SELF’] . "\n" . date("Y/m/d H:i:s") . "\n---------------\n\n", 3, "./logs/error.log");
}