Zend Framework选择where子句占位符会减慢过程

Question

I'm using Zend Framework 1.12.3, and I've noticed that using the '?' placeholder in the where clause slows down the process:

$query = $this->getDbTable()->select()
    ->from($this->getDbTable(), array('id'))
    ->where('id = ?', $id);

Is considerably slower than:

$query = $this->getDbTable()->select()
    ->from($this->getDbTable(), array('id'))
    ->where('id =' . $id);

Here are the getDbTable and setDbTable methods, while $_dbTable is a protected property:

public function setDbTable($dbTable)
{
    if (is_string($dbTable)) {
        $dbTable = new $dbTable();
    }
    if (!$dbTable instanceof Zend_Db_Table_Abstract) {
        throw new Exception('Invalid table data gateway provided');
    }
    $this->_dbTable = $dbTable;
    return $this;
}

public function getDbTable()
{
    if (null === $this->_dbTable) {
        $this->setDbTable('V1_Model_DbTable_Users');
    }
    return $this->_dbTable;
}

And V1_Model_DbTable_Users class:

class V1_Model_DbTable_Users extends Zend_Db_Table_Abstract
{
    protected $_name = 'users'; 
}

Has anyone encountered the same issue? Do you have any solutions? Thanks

Answer 1

请记住，您的第一个示例正在使用功能对输入进行转义，第二个示例与使用原始SQL编写相同。

Answer 2

You should not consider something slow until you have this behavior. This seems to me an opinion. For the time difference matters, you must be a problem in its architecture levels above that. Many people spend time trying to find a problem where it does not exist as should improve your own code.

Do not take it so seriously so. It's just something you should consider as constructive.