4

我已经玩了几个小时并试图解决这个问题，但看起来很难破解。

我能够进行单个数组插入

$person = array('name' => 'Wendy', 'age' => '32');

但如果我想要多个这样的：

$person = array(array('name'=>'Dan', 'age'=>'30'), array('name' => 'John', 'age' => '25'), array('name' => 'Wendy', 'age' => '32'));

它不工作？任何帮助，将不胜感激。

对于多次插入：

public function insertPdo($table, $data){
    try{
        if (!is_array($data) || !count($data)) return false;

        $bind = ':' . implode(', :', array_keys($data));      
        $sql = 'INSERT INTO ' . $table . ' (' . implode(', ',array_keys($data)) . ') ' . 'values (' . $bind . ')';

        $sth = $this->__dbh->prepare($sql);
        $result = $sth->execute($data);

    }
    catch(PDOException $e){
        echo $e->getMessage();
    }
}

单次插入

$person = array('name'=>'Dan', 'age'=>'30');
$db->insertPdo('test_pdo',$person);

// For Multi Insertion, I'm trying to use this in above function
foreach ($data as $row) {
    $result = $sth->execute($row);
};

$person = array(array('name'=>'Dan', 'age'=>'30'), array('name' => 'John', 'age' => '25'), array('name' => 'Wendy', 'age' => '32'));
$db->insertPdo('test_pdo',$person);

和错误：

错误：SQLSTATE[HY093]：无效的参数号：绑定变量的数量与标记的数量不匹配

4

2 回答 2

3

To take advantage of the insert speed of multiple inserts in MySQL ( http://dev.mysql.com/doc/refman/5.0/en/insert-speed.html ), you can use a prepared statement that builds the larger query. This does add complexity over an more iterative approach, so is probably only worth it for high-demand systems or largish data sets.

If you have your data as you proposed above:

$person = array(array('name'=>'Dan', 'age'=>'30'), array('name' =>
'John', 'age' => '25'), array('name' => 'Wendy', 'age' => '32'));

We're looking to generate a query that looks something like this:

insert into table (name, age) values (?,?), (?,?), (?,?);

To pull this together you'll want something not totally unlike this:

$pdo->beginTransaction() // also helps speed up your inserts
$insert_values = array();
foreach($person as $p){
   $question_marks[] = '(?,?)';
   $insert_values = array_merge($insert_values, array_values($p));
}

$sql = "INSERT INTO table_name (name, age) VALUES " . implode(',', $question_marks);

$stmt = $pdo->prepare ($sql);
try {
    $stmt->execute($insert_values);
} catch (PDOException $e){
    // Do something smart about it...
}
$pdo->commit();
于 2012-08-30T21:34:56.237 回答
2

你不能自动做到这一点。相反，您必须手动迭代它并执行每条记录：

for ($person as $row) {
    $sth->execute($row);
}
于 2012-08-30T21:00:35.280 回答