php - PDO bindParam 使用数组，不按假设工作

Question

我有以下代码...

$statement = $conn->prepare("insert into logtest (course, date, time, distance,
      actualstarttime, finishtime, fav, favtotalmatched, favwma, 2ndfav,
      2ndfavtotalmatched, 2ndfavwma, 3rdfav, 3rdfavtotalmatched, 3rdfavwma,
      orangeflag, greenflag, betplaced, totalracetime, numcalculations,
      secswaitedbeforemonitoring, monitorstarttime, totalmonitoringtime)
      values (?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?);");

    for($i = 0; $i < 23; $i++){
        $statement->bindParam($i + 1, $record[$i]);
    }

    $recordsprocessed = 0;

    $line = fgets($file); // Do this once before the loop to go past
                          // the column headers line

    while (!feof($file)){
        $line = fgets($file);
        $record = explode(",", $line);
        print_r($record);
        $statement->execute();
        ++$recordsprocessed;
    }

    echo "<p>Import finished.  $recordsprocessed records imported.</p>";

该代码正在用空值填充数据库。我不明白为什么。我用 aprint_r来验证$record数组是否包含值。

从页面http://php.net/manual/en/pdo.prepared-statements.php暗示参数可以在这些变量包含值之前绑定到变量，所以我假设我可以绑定到和的$record项目然后稍后在循环中填充这些值。

我究竟做错了什么？还是 bindParam 根本不适用于数组？

Answer 1

作为替代方案，您可以只获取每行的这些值，然后通过添加这些批次->execute()

$query = 'INSERT INTO logtest 
    (course,date,time,distance,actualstarttime,finishtime,fav,favtotalmatched,favwma,2ndfav,2ndfavtotalmatched,2ndfavwma,3rdfav,3rdfavtotalmatched,3rdfavwma,
        orangeflag,greenflag,betplaced,totalracetime,numcalculations,secswaitedbeforemonitoring,monitorstarttime,totalmonitoringtime) 
        values (?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
';
$statement = $conn->prepare($query);

$recordsprocessed = 0;
$line = fgets($file);  // do this once before the loop to go past the column headers line
while (!feof($file)){

    $line = fgets($file);

    $record = explode(",",$line);

    $statement->execute($record);

    ++$recordsprocessed;
}

echo "<p>Import finished.  $recordsprocessed records imported.</p>";