PDOStatement::setFetchMode

(PHP 5 >= 5.1.0, PECL pdo >= 0.2.0)

PDOStatement::setFetchMode — Set the default fetch mode for this statement

说明

bool PDOStatement::setFetchMode ( int $mode )

bool PDOStatement::setFetchMode ( int $PDO::FETCH_COLUMN , int $colno )

bool PDOStatement::setFetchMode ( int $PDO::FETCH_CLASS , string $classname , array $ctorargs )

bool PDOStatement::setFetchMode ( int $PDO::FETCH_INTO , object $object )

参数

mode: The fetch mode must be one of the PDO::FETCH_* constants.
colno: Column number.
classname: Class name.
ctorargs: Constructor arguments.
object: Object.

返回值

成功时返回 TRUE，或者在失败时返回 FALSE.

范例

Example #1 Setting the fetch mode

The following example demonstrates how PDOStatement::setFetchMode() changes the default fetch mode for a PDOStatement object.


<?php
$sql = 'SELECT name, colour, calories FROM fruit';
try {
  $stmt = $dbh->query($sql);
  $result = $stmt->setFetchMode(PDO::FETCH_NUM);
  while ($row = $stmt->fetch()) {
    print $row[0] . "\t" . $row[1] . "\t" . $row[2] . "\n";
  }
}
catch (PDOException $e) {
  print $e->getMessage();
}
?>

以上例程会输出：

apple   red     150
banana  yellow  250
orange  orange  300
kiwi    brown   75
lemon   yellow  25
pear    green   150
watermelon      pink    90