php - 警告:PDOStatement::execute(): SQLSTATE[HY093]: 参数编号无效:绑定(bind)变量的数量与中的标记数量不匹配

Question

我正在使用 PHP PDO，但遇到以下问题:

Warning: PDOStatement::execute(): SQLSTATE[HY093]: Invalid parameter number: number of bound variables does not match number of tokens in /var/www/site/classes/enterprise.php on line 63

这是我的代码:

    public function getCompaniesByCity(City $city, $options = null) {
  $database = Connection::getConnection();

  if(empty($options)) {
   $statement = $database->prepare("SELECT * FROM `empresas` WHERE `empresas`.`cidades_codigo` = ?");
   $statement->bindValue(1, $city->getId());
  }
  else {
   $sql = "SELECT * FROM `empresas`
    INNER JOIN `prods_empresas` ON `prods_empresas`.`empresas_codigo` = `empresas`.`codigo` WHERE ";

   foreach($options as $option) {
    $sql .= '`prods_empresas`.`produtos_codigo` = ? OR ';
   }

   $sql = substr($sql, 0, -4);
   $sql .= ' AND `empresas`.`cidades_codigo` = ?';

   $statement = $database->prepare($sql);

   echo $sql;

   foreach($options as $i => $option) {
    $statement->bindValue($i + 1, $option->getId());
   }

   $statement->bindValue(count($options), $city->getId());
  }

  $statement->execute();

  $objects = $statement->fetchAll(PDO::FETCH_OBJ);
  $companies = array();

  if(!empty($objects)) {
   foreach($objects as $object) {
    $data = array(
     'id' => $object->codigo,
     'name' => $object->nome,
     'link' => $object->link,
     'email' => $object->email,
     'details' => $object->detalhes,
     'logo' => $object->logo
    );

    $enterprise = new Enterprise($data);
    array_push($companies, $enterprise);
   }

   return $companies;
  }
 }

Answer 1

看起来您正在尝试构建一个长(？)系列的“或”比较:if (x=1) or (x=2) or (x=3) etc...。您可能会发现将其替换为:

$cnt = count($options);
if ($cnt > 0) {
   $placeholders = str_repeat(', ?', $cnt - 1);
   $sql .= 'WHERE '`prods_empresas`.`produtos_codigo` IN (?' . $placeholders . ')';
}

如果有 5 个选项，你会得到

 WHERE prods_empresas.produtos_condigo IN (?, ?, ?, ?, ?)

然后将值绑定(bind)到:

$pos = 1;
foreach ($options as $option) {
   $statement->bindValue($pos, $option->getId());
   $pos++
}